*Numerot ja erikoismerkit*
1Base5                1 Mbps, Baseband, 500 m
1S                    Single Sided
2ED                   Extra High Density
2S                    Double Sided
386MAX                qualitas 386 Expanded Memory Manager
3COM                  Computers, Communications, Compatibility
3D                    Three-Dimensional
3DRAM                 Three-Dimensional Random Access Memory
3M                    Minnesota Mining and Manufacturing
4GL                   Fourth Generation Language
10Base2               10 Mbps, Baseband, 200 m
10Base5               10 Mbps, Baseband, 500 m
10BaseF               10 Mbps, Baseband, Fiber
10BaseT               10 Mbps, Baseband, Twisted-pair
10Broad36             10 Mbps, Broadband, 3600 m
100BaseFX             100 Mbps, Baseband, fiber
100BaseT              100 Mbps, Baseband, Twisted-pair
100BaseT4             100 Mbps, Baseband, Twisted-four
100BaseTX             100 Mbps, Baseband, Twisted-pair pmd
100BaseVG             100 Mbps, Baseband, Voice Grade
100BaseVG-AnyLAN      100 Mbps, Baseband, Voice Grade Any Local Area Networks
100BaseX              100 Mbps, Baseband, eXtended
100VG-AnyLAN          100 Mbps, Voice Grade Any Local Area Network
1000Base-CX           1000 Mbps, Baseband




*A*
A/D                   Analog/Digital
A/UX                  Apple/UniX
AAAI                  American Association for Artificial Intelligence
AACS                  Additude and ArtiCulation System
AAL                   Atm Adaptation Layer
AARP                  Appletalk Address Resolution Protocol
AAT                   Average Access Time
ABB                   Asea Brown Boveri
ABC                   1) Atanasoft-Berry Computer
                      2) Auto-Bahn Consortium
                      3) Advanced Business Communiacation
                      4) Automatic Brightness Control
ABEND                 ABnormnal END
ABI                   Application Binary Interface
ABIOS                 Advanced Basic Input Output System
ABR                   Available Bit Rate
ABS                   ABSolute value
AC                    1) Alternating Current
                      2) Authentication Center
ACARD                 Advisory Council for Applied Research and Development
ACC                   1) ACCumulator
                      2) Automatic Chrominance Control
                      3) Automatic Color Control
                      4) Automatic Contrast Control
ACD                   Automatic Calling Distribution
ACDI                  Asynchronous Communication Device Interface
ACE                   1) Advanced Computer Environment
                      2) Automatic Calling Equipment
ACIA                  Asynchronous Communication Interface Adapter
ACIRC                 Adaptive Cross Interleave Reed-Solomon
ACP                   Algebra of Communicating Processes
ACPI                  Advanced Configuration and Power Interface
ACSE                  Association Control Service Element
ACU                   Auto Calling Unit
ADP                   Automatic Data Processing
ADSL                  Asymmetric Digital Subscriber Line
ADT                   Abstract Data Type
AFP                   Appletalk Filing Protocol
AGP                   1) Accelerated Graphics Port
                      2) Advanced Graphics Port
AI                    1) Application Interface
                      2) Artificial Intelligence
AIX                   Advanced Interactive Executive
ALi                   Acer Laboratories Inc.
ALIAS                 ALgorIthmic ASsembly language
ALIBI                 Adaptive Location of Internetworked Bases of Information
AMD                   1) Advanced Micro Devices inc.
                      2) Active Matrix Display
AMI                   1) Alternate Mark Inversion
                      2) American Megatrend Inc.
                      3) Application Messaging Interface
AMMA                  Advanced Memory Management Architecture
AMI-BIOS              American Megatrend Inc. BIOS
ANSI                  American National Standards Institute
AnyLAN                Any Local Area Networks
AOL                   American OnLine
API                   1) Application Programming Interface
                      2) Application Program Interface
APM                   Advanced Power Management
A/R                   Accounts Receivable
ARA                   Appletalk Remote Access
ARAG                  AntiReflective-AntiGlare
ARAS                  AntiReflective-AntiStatic
ARCA                  Advanced Risc Computing Architecture
ARCnet                Attached Resource Computer NETwork
ARL                   Adjusted Ring Length
ARLL                  Advanced Run Length Limited
ARM                   1) Advanced Risc Machine
                      2) Annotated Reference Manual
                      3) Asynchronous Response Mode
ARMA                  Association of Records Managers and Administrators
ARP                   Address Resolution Protocol
ARPANET               Advanced Research Projects Agency NETwork
ARPL                  Adjust Requested Privilege Level
ARTA                  Apple Real Time Architecture
ARTIC                 A Real-Time Interface Coprocessor
ARTS                  Asynchronous Remote Takeover Server
ARTT                  Asynchronous Remote Takeover Terminal
ARQ                   Automatic Repeat reQuest
ARU                   Audio Response Unit
AS                    Autonomous System
ASAI                  Adjunct Switch Application Interface
ASAP                  1) As Soon As Possible
                      2) Automatic Switching And Processing
ASB                   Advanced System Buffering
ASC                   ASCii
ASCII                 1) American Standard for Code International Interchange
                      2) American Standard Code for Information Interchange
ASD                   Automatic Skip Driver
ASF                   1) Active Streaming Format
                      2) Advanced Streaming Format
ASIC                  Application Specific Integrated Circuit
ASIO                  Audio Stream In/Out
ASIT                  Advanced Security and Identification Technology
ASL                   Adaptive Speed Levelling
ASLM                  Apple Shared Library Manager
ASMP                  ASymmetric MultiProcessing
ASN                   1) Abstract Syntax Notation
                      2) Autonomous System Number
ASO                   Automated Systems Operations             
ASP                   1) Advanced Signal Prosessing
                      2) Active Server Page
                      3) Application Service Provider
                      4) Authorized Service Provider
                      5) Association of Shareware Professionals
ASPI                  Advanced Scsi Programming Interface
ASPS                  Advanced Signal Processing System
ASR                   1) Address Space Register
                      2) Automatic Speech Recognition
                      3) Automatic Send-Receive
ASSP                  Application Specific Standard Product
AST                   Albert wong, Safi qureshey, Thomas yuen
AS/U                  Advanced Server for Unix
ASYNC                 ASYNChronous
AS/400                Application System/400 
AT                    1) Advanced Technology
                      2) ATtention command language
ATA                   AT Attachment
ATAPI                 1) AT Attachment Programming Interface
                      2) AT Attachment Packet Interface
ATDP                  Attention Dial Pulse
ATDT                  Attention Dial Tone
ATE                   Automated Test Equipment
ATG                   Advanced Technology Group
ATH                   ATtention Hang-up
ATK                   Automaattinen TietojenKäsittely
ATL                   Active Template Library
ATM                   1) Asynchronous Transfer Mode
                      2) Automated Teller Machine
                      3) Air Traffic Management 
                      4) Adobe Typeface Manager 
ATPS                  AppleTalk Printing Services
ATR                   Automatic Terminal Recognition
ATS                   1) Administrative Terminal System
                      2) Apple Terminal Services
AT&T                  American Telephone & Telegraph
ATTN                  ATTeNtion
ATTRIB                ATTRIBute
ATX                   Advanced Technology eXtended
AUDIT                 AUtomated Data Input Terminal
AUI                   1) Attachment Unit Interface
                      2) Autonomous Unit Interface
AUP                   Acceptable Use Policy
AUTO                  AUTOmatic
AUTOEXEC              AUTOmatic EXECution
AUX                   AUXiliary
AV                    1) Audio/Video
                      2) AudioVisual
                      3) Authenticity Verification
AVA                   Audio Visual Authoring
AVC                   Audio Visual Connection
AVD                   Alternating Voice and Data
AVG                   AVeraGe
AVI                   Audio Visual Interleave
AVP                   Attribute-Value Pair
AVR                   Automatic Voice Recognition
AVT                   Applied Voice Technology
AWE                   Advanced Wave Effects
AWG                   American Wire Gage
AWK                   al Aho, peter Weinberger, brian Kernighan
AWS                   Advanced Workstations and Systems
AWT                   Abstract Window Toolkit



*B*
b                     1) bit
                      2) bitti
B                     Byte
B-ICI                 B-isdn Inter Carrier Interface
B-ISDN                Broadband Integrated Services Digital Network
B-NT1                 Broadband Network Terminal 1
B-NT2                 Broadband Network Terminal 2
B-TA                  Broadband Terminal Adapter
B-TE1                 Broadband Terminal Equipment 1
B-TE2                 Broadband Terminal Equipment 2
BABCo                 Business Application Performance COrporation
BACP                  Bandwidth Allocation Control Protocol
BAN                   Bridged Area Network
BARK                  Binär Aritmetisk Rela-Kalkylator
Base2                 Baseband, 200 m
BaseF                 Baseband, Fiber
BaseFX                Baseband, Fiber
BaseT                 Baseband, Twisted-pair
BaseTX                Baseband, Twisted-pair
BaseVG                Baseband, Voice Grade
BaseX                 Baseband, eXtended
BAS                   Basic Activity Subset
BASF                  Badische Anilin und SodaFabrik
BASIC                 Beginners All-purpose Symbolic Information Code
BASICA                Beginner's All-purpose Symbolic Instruction Code Advanced
BASIS                 BAse Stored ImageSensor
BAT                   BATch
BBD                   Bucket-Brigade Device
BBN                   Bolt, Beranek et Newman inc.
BBS                   Bulletin Board System
BCC                   1) Binary Cyclic Code
                      2) Block Check Character
BCD                   1) Binary Coded Decimal
                      2) Binary Coded Digit
BCH                   Bose-Chadhuri-Hocquenghem code
BCLDS                 Broadband ConnectionLess Data Service
BCS                   1) Basic Combined Subset
                      2) British Computer Society
BCT                   Binary Code Ternary
BDSS                  Bayesian Decision Support System
BDU                   Bridge Data Unit
BEDO DRAM             Burst Extended Data Output Dynamic Random Access Memory
BEL                   BELl
BER                   Bit Error Rate
BERT                  Bit Error Rate Test
BESK                  Binär Elektronisk Sekvens-Kalkylator
BFO                   Beat Frequency Oscillator
BFOC                  Bayonet Fibre Optic Connector
BFTP                  Binary File Tranfer Protocol
BG                    BackGround
BGA                   1) Ball Grid Array
                      2) Bridge Group Address
BGP                   Basic Gateway Protocol
BHCA                  Busy Hour Call Attempts
BI                    BIdirectional
BIF                   Binary Image Format 
BIOS                  Basic Input Output System
BIN                   BINary
BIND                  Berkeley Internet Name Daemon
BIPS                  Billion of Instruction Per Second
BISYNC                Binary Synchronous Communication Protocol
BIT                   BInary digiT
BITNET                Becouse It's Time NETwork
BIU                   Basic Information Unit
BLOB                  Binary Large OBject
BLU                   Basic Link Unit
BMDP                  BioMedical Computer Program
BMP                   BitMap Picture
BNC                   Bayonet Nut Coupling
BOD                   1) Bandwidth On Demand
                      2) Book On-Demand
BOF                   Beginning Of File
BONDING               Bandwith ON Demand INteroperability Group
BOOTP                 BOOTstrap Protocol
BOP                   Bit Oriented Protocol
BOT                   Beginning Of Tape
BPDU                  Bridge Protocol Data Unit
BPI                   1) Bits Per Inch
                      2) Bytes Per Inch
BPP                   Bits Per Pixel
BPS                   1) Bit Per Second
                      2) Bytes Per Second
BPSK                  Binary Phase Shift Keying
BRA                   British Robot Associati-on
BRAM                  Burst Random Access Memory
BREMA                 British Radio Equipment Manufacturers Association
BRI                   Basic Rate Interface
BROUTER               Bridge + ROUTER
BS                    BackSpace
BSA                   1) Boron-Silicon-Glass Self-Aligment
                      2) Business Software Alliance
BSC                   1) Base Station Controller
                      2) Binary Synchronous Communications protocol
BSD                   1) Binary Coded Decimal
                      2) Berkely Software Distribution
                      3) Berkely Standard Distribution
BSDI                  Berkeley Software Design, Inc.
BSOD                  Blue Screen of Death
BSOL                  Blue Screen of Life
BSRAM                 Burst Static Random Access Memory
BSS                   1) Basic Synchronization Subset
                      2) Base Station System
BST                   Boundary-Scan Testing
BTAM                  Basic Telecommunications Access Method
BTD                   Bad Track Table
BTRON                 Business The Realtime Operating System Nucleus
BTS                   Base Transceiver Station
BTU                   Basic Transmission Unit
BTX                   1) Balance Technology eXtended
                      2) BildschirmTeXt
BUA                   Bridge Unique Address
BWCC                  Borland Windows Custom Controls



*C*
CA                    Computer Associates
CAAD                  Computer Aided Architectural Design
CABD                  Computer Aided Building Design
CAC                   Computer Aided Creativity
CACSD                 Computer Aided Control System Design
CAD                   1) Computer Aided Design
                      2) Computer Aided Drafting
CADD                  Computer Aided Drauthing and Design 
CADS                  1) Computer Aided Design System
                      2) Computer Aided Drafting System
CAE                   1) Common Application Environment
                      2) Computer Aided Engineering
CAI                   1) Computer Aided Inspection
                      2) Computer Aided Instruction
                      3) Computer Assisted Instruction
CAIA                  Computer Assisted Information Access
CAIS                  Common Apse Interface Set
CAISE                 Computer Aided Integrated Software Engineering
CAIT                  Central Academy for Information Technology
CAL                   Computer Aided learning
CALS                  Computer Aided Acquisition and Logistic Support
CAM                   1) Computer Aided Manufacturing
                      2) Common Access Method
                      3) Content Addressable Memory
                      4) Complete Answering Machine
CAMAC                 Computer Aided Measurement And Control
CAN                   1) CANcel
                      2) Controller Area Network
CAP                   1) Carrierless Amplitude and Phase modulation
                      2) Computer Aided Publishing
CAPI                  Common isdn API
CAPP                  1) Computer Aided Process Planning
                      2) Computer Aided Printing and Publishing
CAPS                  CAPitalS
CaPSL                 Canon Printing System Language
CAR                   Computer Aided Radio
CARAM                 Content Addressable Random Access Memory
CAROL                 Computer Aided Revolution On Learning
CAS                   Communication Application Specification
CASE                  1) Common Application Service Element
                      2) Computer Aided Software Engineering
CAT                   1) Computer Aided Testing
                      2) Computer Aided Teaching
                      3) Computer Adaptive Test
                      4) Computer Aided Tomography
                      5) Computer Aided Transcription
                      6) Computer Aided Concatenate
                      7) CATenate
                      8) CATalog
                      9) CATegory
                      10) Common Abstract Tree language
                      11) Common Authentication Technology
CATE                  Computer Aided Testing Engineering
CATIA                 Computer-graphics Aided Three-dimensional Interactive Application 
CAV                   Constant Angular Velocity
CAU                   1) Control Access Unit
                      2) Controlled Access Unit
CBASIC                Commercial BASIC
CBBS                  Computer Bulletin Board System
CBC                   Cipher Block Chaining
CBDS                  Connectionless Broadband Data Service
CBEMA                 Computer and Business Equipment Manufacturers Association
CBIOS                 Compatibility Basic Input Output System
CBL                   Computer-Based Learning
CC                    1) Carbon Copy
                      2) Cluster Controller
CCD                   1) Charged-Coupled Device
                      2) Charge Couple Device
CCFL                  Cold Cathode Fluorescent Lamp
CD                    1) Compact Disk 
                      2) Communication Driver
                      3) Change Directory
                      4) Carrier Detect
CD-DA                 Compact Disk Digital Audio
CD-I                  Compact Disk Interactive
CD-MO                 Compact Disk Magneto Optical
CD-R                  Compact Disk Recordable
CD-RAM                CacheD Random Access Memory
CD-RDx                Compact Disk - Read only memory Data eXchange standard
CD-ROM                1) Compact Disk Read Only Memory
                      2) Compact Disk Read Only Media
CD-ROM XA             Compact Disk Read Only Memory eXtended Architecture
CD-RTOS               Compact Disk - Real Time Operating System
CD-RW                 Compact Disk - ReWritable
CD-V                  Compact Disk Video
CD-WO                 Compact Disk Write Once
CDA                   1) Compact Disk Audio
                      2) Compound Document Architecture
CDC                   Control Data Corporation
CDDB                  Compact Disc DataBase
CDDI                  Coaxial Distributed Data Interface
CDF                   Common Data Format
CDL                   Computer Description Language
CDMA                  Code Division Multiple Access 
CDRL                  Contract Data Requirements List
CDS                   Command and Data System
CDV                   Cell Delay Variation
CE                    1) Cache Enable
                      2) Chip Enable
                      3) Collision Elimination
                      4) Convert Enable
CG                    Chassis Ground
CGA                   1) Color Graphics Adapter
                      2) Column Grid Array
CGI                   1) Common Gateway Interface
                      2) Computer Graphics Interface
CGM                   Computer Graphics Metafile
CHS                   Cylinder-Head-Sector
CISC                  Complex Instruction Set Computer
CISC/VS               Customer Information Control System / Virtual Storage
CLI                   Call Level Interface
CLP                   CLiPboard
CMOS                  Complementary Metal-Oxide Semiconductor
CMS                   1) Content Management System                   
                      2) Call Management Server
                      3) Code Management System
                      4) Compiler Monitor System
                      5) Conversation Monitor System
CMY                   Cyan, Magenta, Yellow
CMYK                  1) Cyan, Magenta, Yellow, blacK
                      2) Cyan, Magenta, Yellow, Key
COBOL                 COmmon Business Oriented Language
CODEC                 1) COder/DECoder
                      2) COmpression/DECompression
COM                   serial COMmunication port
CON                   CONsole
CORBA                 Common Objet Request Broker Architecture
CP/M                  Control Program for Microcomputers
CPLD                  Complex Programmable Logic Device
CPU                   Central Prosessing Unit
CRC                   Cyclic Redundancy Check
CRT                   Cathode Ray Tube
C/S                   Client/Server
CS                    1) Clear to Send
                      2) CompuServe
                      3) Chip Select 
                      4) Code Segment
                      5) Computer Science
CSA                   Calendaring and Scheduling Api
CSAR                  Channel System Address Register
CSCW                  Computer Supported Cooperative Work
CSD                   1) Circuit-Switched Data
                      1) Computer Services Department
                      3) Corrective Service Diskette
CSDS                  Circuit Switched Data Service
CSL                   1) Computer Structure Language
                      2) Control and Simulation Language
CSM                   1) Code Set Map
                      2) Communications Services Manager
                      3) Control Strip Module
CSMA                  Carrier Sense Multiple Access
CSMA/CA               Carrier Sense Multiple Access/with Collision Avoidance
CSMA/CD               Carrier Sense Multiple Access/with Collision Detection
CSMS                  Customer Support Management System
CSN                   Card-Select Number
CSS                   Cascading Style Sheet
CSV                   1) Comma-Separated Value
                      2) Comma-Separated Variable
                      3) Circuit-Switched Voice
                      4) Common Services Verbs
CTS                   Clear To Send



*D*
D3D                   Direct 3D
DAT                   Digital Audio Tape
DB                    DataBase
DBA                   DataBase Administrator
DBCS                  Double-Byte Character Set
DBF                   DBase File 
DBML                  DataBase Markup Language 
DBMS                  Data Base Management System
DBRI                  Dual Basic Rate Interface 
DC                    1) Data Collection
                      2) Data Communication
                      3) Data Control
                      4) Device Control
                      5) Direct Current
                      6) Direct Connect
DCC                   1) Data Country Code
                      2) Digital Command Control
                      3) Direct Client Connection
                      4) Direct Cable Connection
                      5) Display Combination Code
                      6) Digital Compact Cassette
DCD                   Data Carrier Detect
DCE                   1) Data Communications Equipment
                      2) Data Circuit-Terminating Equipment
                      3) Distributed Computing Environment
                      4) Distributed Computing Equipment
DCOM                  Distributed Component Object Model
DD                    Double Density
DDC                   1) Document Description Language
                      2) Direct Digital Control
DDE                   Dynamic Data Exchange
DDoS                  Distributed Denial of Service attack
DDR SDRAM             Double Data Rate Synchronous Dynamic Random Access Memory
DDR-RAM               Double Data Rate-Random Access Memory
DDS                   Digital Data Storage
DEA                   1) Data Encryption Algorithm
                      2) Disposable Email Address
DEC                   1) Digital Equipment Corporation
                      2) DECrement
                      3) DEvice Clear
DECNET                Digital Equipment Corporation NETworking
DHCP                  Dynamic Host Configuration Protocol
DI                    1) Data In
                      2) Destination Index
DIA                   Document Interchange Architecture
DIB                   1) Device Independent Bitmap
                      2) Directory Information Base
                      3) Dual Independent Bus
DIBOL                 Digital Equipment corporation Business Oriented Language
DIC                   DICtionary
DICOM                 Digital Imaging and COmmunications in Medicine
DID                   Direct Inward Dialing
DIDS                  Distributed Intrusion Detection System
DIF                   Data Interchange Format
DIFFSENS              DIFFerential SENSe
DIL                   Dual In-Line package
DIIP                  Direct Interrupt Identification Port
DIME                  Direct Internet Message Encapsulation
DIMM                  Dual In-line Memory Module
DIN                   Deutsche Industrie Norm
DIP                   1) Dual In-line Plastic 
                      2) Dual In-line Package
                      3) Dual Inline Package
DIX                   Digital-Intel-Xerox
DLC                   Data Link Control
DLCI                  Data Link Connection Identifier
DLE                   Data Link Escape
DLL                   Dynamic Link Library
DLT                   Digital Linear Tape
DMA                   Direct Memory Access
DMF                   high Density Media Format
DMS                   1) Document Management System
                      2) Data Management System
                      3) Data Management Software
DNA                   Digital Network Architecture
DNS                   1) Domain Naming System
                      2) Domain Name System
                      3) Distributed Name Service
DoS                   Denial of Service attack
DOS                   1) Disk Operating System
                      2) Diskette Operating System
DPI                   Dots Per Inch
DPMI                  Dos Protected Mode Interface
DPMS                  Display Power Management Signaling
DQPSK                 Differential Quadrature Phase Shift Keying
DRAM                  Dynamic Random Access Memory
DS                    1) Double Sided
                      2) Data Set ready
DSE                   1) Data Switching Exchange
                      2) Data Switching Equipment
DSL                   1) Digital Subscriber Line
                      2) Dynamic Simulation Language
DSLAM                 Digital Subscriber Line Access Multiplexer
DSN                   Distributed Systems Network
DSP                   1) Digital Signal Processor
                      2) Digital Signal Processing
                      3) Domain Specific Part
                      4) Directory System Protocol
DSR                   Data Set Ready
DSTN                  Double Super Twisted Nematic
DTE                   1) Data Terminal Equipment
                      2) Dumb Terminal Emulator
DTP                   DeskTop Publishing
DTR                   Data Terminal Ready
DVB                   Digital Video Broadcasting
DVD                   1) Digital Versatile Disc
                      2) Digital Video Disc
DVD-R                 Digital Video Disk - Recordable
DVD-RAM               1) Digital Video Disc - Read Only Media
                      2) Digital Versatile Disc - Random Access Memory
DVD-ROM               1) Digital Video Disc - Read Only Media
                      2) Digital Versatile Disc - Read Only Media
DVE                   Digital Video Effect
DVI                   1) Digital Video Interactive
                      2) Digital Visual Interface
DVM                   Digital Volt Meter
DVMRP                 Distance Vector Multicast Routing Protocol
DVMT                  Dynamic Video Memory Technology
DVOF                  Digital Video Over Fiber
DVR                   Digital Video Recorder
DW                    Data Warehousing
DWDM                  Dense Wavelength Division Multiplexer
DWG                   DraWinG
DWMT                  Discrete Wavelet Multitone
D2X                   Decimal To heXadecimal
DXC                   Data eXchange Control
DXF                   1) Data eXchange File
                      2) Drawing eXchange Format
DXI                   Data Exchange Interface
DYNSLT                DYNamic SeLecT
DYNSRC                DYNamic SouRCe



*E*
E-MAIL                Electronic MAIL
EA                    1) Effective Address
                      2) Extended Attribute
                      3) Electronic Arts
EAI                   Enterprise Application Integration
EAR                   External Access Register
EARN                  European Academic Research Network
EAROM                 Electrically Alterable Read Only Memory
EARS                  1) Electronic Access to Reference Services
                      2) Electronic Authoring and Routing System
                      3) Explicit Archive and Retrieval System
EATA                  Enhanced AT Bus Attachment
EAX                   Environmental Audio eXtensions
EB                    ExaByte
EBASIC                Extended BASIC
EBC                   Eisa Bus Controller
EBCT                  Electron Beam Computed Tomography
EBCDIC                Extended Binary Coded Decimal Interchange Code
EBI                   1) Equivalent Background Input 
                      2) Extended Background Investigation
EBIOS                 Extended Basic Input/Output System
EBNF                  Extended Backus-Naur Form
EBOOK                 Electronic BOOK
EBPP                  Electric Bill Presentment and Payment
EBT                   Electronic Benefits Transfer
EC                    1) Electronic Commerce
                      2) Error Control
ECAL                  Enjoy Computing And Learn
ECAT                  Electronic Card Assembly and Test
ECB                   1) Electronic CodeBook
                      2) Event Control Block
ECC                   1) Error Checking and Correcting
ECC                   2) Elliptic Curve Crypto
                      3) Error Check Code
                      4) Error Correction Code
ECD                   1) Enhanced Color Display
                      2) Enhanced Compact Disk
ECHO                  European Commission Host Organization
ECI                   External Call Interface
ECL                   Emitter Coupled Logic
ECM                   Electronic Control Module
ECMA                  European Computer Manufacturers Association
ECN                   Electronic Communications Network
ECNE                  Enterprise Certified Netware Engineer
ECP                   1) Extended Communication Port
                      2) Enhanced Capabilities Port
                      3) Extended Capabilities Port
ECS                   Enhanced Chip Set
ECTL                  Electronic Communal Temporal Lobe
ECU                   Eisa Configuration Utility
ED                    1) Extra high Density
                      2) Erase Display
EDA                   1) Electronic Design Automation
                      2) Embedded Document Architecture
EDB                   Embedded DataBase
EDC                   1) Electronic Digital Computer
                      2) Enhanced Data Correction
                      3) Error Detection and Correction
EDDC                  Extended Distance Data Cable
EDE                   Encrypt-Decrypt-Encrypt
EDGAR                 Electronic Data Gathering, Analysis and Retrieval
EDGE                  1) Enhanced Data Gsm Environment
                      2) Enhanced Data-rates for Global Evolution
EDI                   1) Electronic Data Interchange
                      2) Electronic Document Interchange
EDIF                  Electronic Design Interchange Format
EDIFACT               EDI For Administration Commerce and Transport
EDL                   Edit Decision List
EDLC                  Ethernet Data Link Control
EDLIN                 EDitor (LINe text)
EDMS                  Electronic Document Management System
EDO                   Extended Data Out
EDO RAM               Extended Data Output Random Access Memory
EDOS                  Enhanced DOS for windows
EDP                   Electronic Data Processing
EDPM                  Electronic Data Processing Machine
EDRAM                 1) Enhanced Dynamic Random Access Memory
                      2) Eraseable Dynamic Random Access Memory
                      3) Extended Dynamic Random Access Memory  
EDS                   Electronic Data Systems
EDSAC                 Electronic Delay Storage Automatic Computer
EDV                   Elektronische DatenVerarbeitung
EDVAC                 Electronic Discrete Variable Automatic Computer
EE                    Extended Edition
EEC                   Extended Error Correction
EEG                   ElectroEncephaloGram
EEL                   Epsilon Extension Language
EEM                   Extended Memory Management
EEMAC                 Electrical & Electronic Manufacturers of Canada
EEMS                  Enhanced Expanded Memory Standard
EEPROM                Electrically Erasable Programmable Read-Only Memory
EES                   Escrow Encryption Standard
EFA                   Extended File Attribute
EFF                   Electronic Frontier Foundation
EFI                   1) Extensible Firmware Interface
                      2) Electromechanical Frequency Interference
                      3) Electronics For Imaging
EFIGS                 English, French, Italian, German, Spanish
EFL                   Emitter Follower Logic
E-FORM                Electronic FORM
EFS                   Encrypting File System
EFTS                  Electronic Funds Transfer System
EGA                   Enhanced Graphics Adapter
EGP                   Exterior Gateway Protocol
EGREP                 Extended Global Regular Expression Print
EHLLAPI               Emulator High Level Language Application Programming Interface
EIA                   Electronic Industries Association
EIDE                  Enhanced Integrated Drive Electronics
EIGRP                 Enhanced Interior Gateway Routing Protocol
EIS                   Executive Information System
EISA                  1) Extended Industry Standard Architecture
                      2) Enhanced Industry System Architecture
EJB                   Enterprise JavaBeans
EL                    1) ElectroLuminescent
                      2) Erase Line
ELAN                  Emulated Local Area Network
ELC                   Embedded Linking and Control
ELEC                  Enterprise Local Exchange Carrier
ELF                   1) Executable and Linking Format
                      2) Extremely Low Frequency
ELS                   Entry Level System
EM                    1) Electronic Mail
                      2) End of Medium
                      3) Expanded Memory
EMA                   1) Electronic Mail Association
                      2) Enterprise Management Architecture
                      3) Enterprise Memory Architecture
EMACS                 Editing MACroS
EMB                   Extended Memory Block
EMBARC                Electronic Mail Broadcast to A Roaming Computer
EMC                   1) ElectroMagnetic Compatibility
                      2) Enhanced Memory Chip +
                      3) Extended Math Coprocessor
                      4) E-Mail Connection
EMCC                  Eckert-Mauchly Computer Company
EMI                   ElectroMagnetic Interference
EMM                   Expanded Memory Manager
EMR                   1) Electro-Magnetic Radiation
                      2) Enhanced Metafile Record
EMS                   1) Expanded Memory Specification
                      2) Electronic Mail System
                      3) Electronic Message Service
                      4) Energy Management System
EMSAPI                Extended Messaging Services Application Programming Interface
EMWAC                 European Microsoft Windows nt Academic Centre
ENDEC                 ENcoder/DECoder
ENDS                  ENDs Segment
ENIAC                 Electronic Numerical Integrator and Computer
ENQ                   ENQuiry
ENSS                  Exterior Nodal Switching Subsystem
EOA                   End Of Address
EOB                   End Of Block
EOC                   End Of Conversion
EOF                   1) End Of File
                      2) Enterprise Objects Framework
EOI                   1) End Of Interrupt
                      2) End Or Identify
EOJ                   End Of Job
EOL                   1) End Of Line
                      2) End Of List
EOM                   End Of Message
EOR                   Exclusive OR
EOS                   1) End Of String
                      2) Earth Observing System
EOSDIS                Earth Observing System Data and Information System
EOT                   1) End Of Table
                      2) End Of Text
                      3) End Of Tape
                      4) End Of Transmission
EP                    1) ElectroPhotographic engine
                      2) Enterprise Portal
EPIC                  Explicitly Parallel Instruction Computing
EPL                   Effective Privilege Level
EPLD                  Electrically Programmable Logic Device
EPM                   1) Enhanced editor for Presentation Manager
                      2) Enterprise Process Management
                      3) Enterprise Portal Management
EPP                   1) Enhanced Parallel Port
                      2) Extended Printer Port
EPROCESS              Executive PROCESS
EPROM                 1) Electrically Programmable Read Only Memory
                      2) Erasable Programmable Read Only Memory
EPSF                  Encapsulated PostScript Files
ERA                   Extended Registry Attributes
ERAS                  Electronic Routing and Approval System
ERD                   1) Emergency Repair Disk
                      2) Entity Relationship Diagram
ERIC                  Educational Resources Information Center
EPROM                 Erasable Programmable Read Only Memory
EPS                   Encapsulated PostScript File
ERLL                  Enhanced RLL
ERMA                  Electronic Recording Method, Accounting
EROM                  Erasable Read Only Memory
EROS                  Earth Resources Observation System
ERP                   Enterprise Resource Planning
ERR                   ERRor
ER/RC                 Extended Result/Response Code
ERU                   Emergency Recovery Utility
ES                    Extra Segment
ESA                   1) Enterprise Systems Architecture
                      2) European Space Agency
ESC                   1) ESCape
                      2) Eisa System Component
ESCD                  Extended System Configuration Data
ESCM                  Extended Services Communications Manager
ESCON                 Enterprise System CONnection
ESC/P                 Epson Standard Code for Printers
ESD                   1) Electronic Software Distribution
                      2) ElectroStatic Discharge 
                      3) Emergency Startup Disk
ESDI                  1) Enhanced Small Device Interface
                      2) Extended Standard Disk Interface
                      3) Enhanced System Device Interface
ESDRAM                Enhanced Synchronous Dynamic Random Access Memory
ESF                   Extended SuperFrame
ESI                   1) End System Identifier
                      2) Enhanced Serial Interface
ESMR                  Enhanced Specialized Mobile Radio
ESN                   Electronic Security Number
ESP                   1) Emulation Sensing Processor
                      2) Enhanced Serial Port
                      3) Encapsulating Security Payload
                      4) Enhanced Service Provider
                      5) Enterprise System Platcorm
                      6) Estimated Selling Price
ESR                   Event Service Routine
ESS                   Electronic Switching System
ESU                   Electro-Static Unit
ET                    Enhancement Technology
ETACS                 Extended Total Access Communication System
ETANN                 Electrically Trainable Analog Neural Network
ETB                   End of Transmission Block
ETC                   1) Electronic Toll Collection
                      2) Enhanced Throughput Cellular
E-TEXT                Electronic TEXT
ETF                   Enriched Text Format
ETOM                  Electron-Trapping Optical Memory
ETPL                  Endorsed Tempest Products List
ETS                   Econometric Time Series
ETX                   End of TeXt
EU                    Execution Unit
EUC                   1) End User Computing
                      2) Extended Unix Code
EUI                   End-User Interface
EULA                  End-User License Agreement
EVE                   Extensible Vax Editor
EVGA                  1) Extended Video Graphics Array
                      2) Extended Video Graphics Adapter
EWAN                  Emulator Without A Good Name
EWS                   Employee Written Software
ExCA                  Exchangeable Card Architecture
EXE                   EXEcutable
EXP                   EXPonent
EXT                   EXTernal



*F*
FAN                   Fabric Area Network
FAQ                   Frequently Asked Questions 
FAS                   Frame Alignment Sequence
FAT                   File Allocation Table
FC                    Full-Custom
FCB                   File Control Block 
FCBS                  File Control BlockS
FCC                   Federal Communications Commission 
FCPGA                 Flip Chip Pin Grid Array
FCS                   Frame Check Sequence 
FD                    Flat Display 
FDDI                  1) Fiber Distributed Data Interchange
                      2) Fiber Distributed Data Interface 
FDM                   Frequency Division Multiplexing  
FEC                   Fast Ethernet Channel
FECN                  Forward Explicit Congestion Notification   
FEP                   Front End Processor
FF                    Form Feed
FHSS                  Frequency Hopping Spread Spectrum 
FIFO                  First In First Out
FLOPS                 FLoating-point Operations Per Second 
FLT                   Full Line Terminal
FM                    Frequency Modulation
FOIRL                 Fiber Optic Inter Repeater Link  
FORTRAN               FORmula TRANslation  
FPGA                  Field Programmable Gate Array
FPLA                  Field Programmable Logic Array
FPLD                  Field Programmable Logic Device
FPM DRAM              Fast Page Mode Dynamic Random Access Memory
FPS                   Frames Per Second 
FPU                   Floating Point Unit
FQDN                  Fully Qualified Domain Name
FRAD                  Frame Relay Assembler Dissembler 
FRAM                  Ferroelectric Random Access Memory
FRF                   Frame Relay Forum
FRU                   Field Replacement Unit
FSAA                  Full-Screen Anti Alisasing  
FSB                   Front Side Bus
FSTN                  Film compensated Super Twisted Nematic
FTAM                  File Transfer Access and Management
FTP                   File Transfer Protocol
FTT                   Free Topology Tranceiver
FXO                   Foreign eXchange Office  
FXS                   Foreign eXchange Station  
FYI                   For Your Information



*G*
GA                    Gate Array
GaAs                  1) Gallium Arsenidi
                      2) Gallium Arsenide
GAIL                  Gate Array Interface Language
GAL                   Generic Array Logic
GAMM                  Gesellschaft für Ange-wandte Mathematik und Meckanik
GM                    1) General Midi
                      2) Graphics Manager
GB                    1) GigaByte
                      2) Gigatavu
GCA                   Genetic Compression Algorithm
GCR                   1) Grey Component Replacement
                      2) Group-Coded Recording
GCRA                  Generic Cell Rate Algorithm
GDI                   Graphics Device Interface
GDS                   Generalized Data Stream
GE                    General Electric corporation
GEM                   Graphic Environment Management
GIF                   1) compuserve Graphic Image File
                      2) Graphics Interchange Format
GILS                  Goverment Information Locator Service
GIS                   Geografical Information System
GKS                   Graphic Kernel System
GLI                   Gesellschaft für Logistik und Informationssysteme
GLM                   General Linear Models
GLN                   Global Location Number
GMD                   Gesellschaft für Mathematik und Datenverarbeitung
GMSK                  Gaussian Minimum Shift Keying
GND                   GrouND
GNU                   Gnu's Not Unix
GOSIP                 Government Open System Interconnection Profile
GPF                   General Protection Fault
GPIB                  General Purpose Interface Bus
GPM                   Geometric Product Models
GPS                   1) General Problem Solver
                      2) Global Positioning System, navigation system with time and ranking
GPRS                  General Packet Radio Service
GPSS                  General Purpose Simulation System
GPU                   Graphics Prosessing Unit
GRID                  Global Resource Information Database
GS                    Group Separator
GSI                   Giga Scale Integration
GSS                   Group Support Systems
GT                    GigaTavu
GTDI                  Guidelines for Trade Data Interchange
GTEM                  Gigahertz Transverse Electro Magnetic
GTM-OSI               General Telecommunication Manager for OSI
GUI                   Graphical User Interface
GUS                   Gravis UltraSound
GVNS                  Global Virtual Network Services
GW                    GateWay
GWBASIC               Graphics and Windows BASIC



*H*
HAL                   1) Human Access Language
                      2) Hard Array Logic
                      3) Hardware Abstraction Layer
                      4) House-Programmed Array Logic
HARC-C                Houston Advanced Research Center Compression
HART                  Highway Addresseable Remote Transduser
HCI                   Human-Computer Interface
HCS                   Hard Clad Silica
HD                    1) Half Duplex
                      2) Hard Disk
                      3) High Density
HDD                   Hard Disk Drive
HDLC                  High-level Data Link Control
HDLC LAP(B)           High-level Data Link Control, Link Access Procedure (Balanced)
HDSC                  High Density Signal Carrier
HDSL                  High bit-rate Digital Subscriber Line
HDX                   Half DupleX
HEC                   Header Error Control
HETI                  Helsinki stock Exchange automated Trading and Information system
HETKY                 HElsingin TietojenKäsittely-Yhdistys ry.
HEX                   HEXadecimal
HFDS                  Highly Functional Distributed System
HFFR                  Halogen Free, Fire Retardant
HGA                   Hercules Graphics Adapter
HGC                   Hercules Graphics Card
HGL                   Hewlett-packard Graphics Language image file
HHC                   Hand Held Computer
HIM                   Human Integrated Manufacturing
Hiperlan              HIgh-Performance Radio Local Area Network
Hipernet              High-Performance Radio Network
HIPO                  Hierarchical Input-Processing-Output
HiPPI                 High Performance Parallel Interface
HIS                   Honeywell Information Systems
HIT                   Hierarchical Interconnection Technology
hitec                 high technology
HLLAPI                High Level Language Application Program Interface
HLM                   Heterogeous Lan Management
HLP                   HeLP
HLS                   Hue, Lightness, Saturation
HMA                   High Memory Area
HMD                   1) Head Mounted Display
                      2) Helmet-Mounted Display
HMIC                  Hybrid Microwave Integrated Circuit
HMOS                  High-performance MOS
HNiL                  High Noise immunity Logic
HOT                   Holographic Optical Tracking
HP                    Hewlett-Packard company
HPFS                  High Performance File System
HPGL                  Hewlett-Packard Graphic Language
HPIB                  Hewlett-Packard Interface Bus
HPRL                  Heuristic Programming and Representational Language
HQS                   High Quality Screening
HR                    High Resolution
HS/Link               samuel H. Smith Link
HSCSD                 High Speed Circuit Switched Data
HSF                   Hierarchial File System
HSI                   Hue, Saturation, Intensity
HSM                   Hierarchical Storage System
HSSI                  High Speed Serial Interface
HST                   High Speed Technology
HSV                   Hue, Saturation, Value
HT                    1) Henkilökohtainen Tietokone
                      2) Horizontal Tabulation
HTL                   High Threshold Logic
HTM                   HyperText Markup (Language)
HTML                  HyperText Markup Language
HTTP                  HyperText Transfer Protocol
HW                    HardWare
HyTime                Hypermedia Timebased document structuring language
Hz                    Hertz



*I*
I/O                   Input/Output
I-WAY                 Internet highWAY
IAB                   Internet Architecture Board
IAC                   Inter Agent Communication
IAP                   Interfaces for Application Portability
IAR                   Instruction Address Register
IB                    Intelligent Building
IBCN                  Integrated Broadband Communication Network
IBI                   International Bureau for Informatics
IBM                   International Business Machines
IBM PCLP              IBM PC-Lan Program
IBVA                  Interactive Brainwave Visual Analyzer
IC                    1) Industrial Computer
                      2) Info Center
                      3) Insert Cursor
                      4) Integrated Circuit
                      5) Interface Controller
ICE                   In-Circuit Emulator
ICEMS                 Intra-Company Electronic Mail System
ICL                   International Computer Limited
ICM                   1) Image Color Matching
                      2) Intel Configuration Manager
ICMP                  Internet Control Message Protocol
ICO                   1) Intermediate Circular Orbit
                      2) ICOn
iCOMP                 intel COmparative Microprocessor Performance
ICOT                  Institute for new generation COmputer Technology
ICQ                   'I Seek You'
ICT                   In-Circuit Testing
ICU                   Isa Configuration Utility
ID                    Identification
IDA                   Integrated Digital Access
IDAPI                 Integrated Database Application Programming Interface
IDC                   International Data Corporation
IDE                   1) Integrated Drive Electronics
                      2) Intelligent Drive Electronics
IDE CHS               Intelligent Drive Electronics Cylinder, Head, Sector
IDEA                  International Data Encryption Algorithm
IDGNS                 International Data Group News Service
IDI                   Initial Domain Identifier
IDN                   Integrated Digital Network
IDP                   1) Integrated Data Processing
                      2) Internet Datagram Protocol
IDRP                  Interdomain Routing Protocol
IEC                   International Electrotechnical Commission
IEDM                  International Electron Devices Meeting
IEEE                  Institute of Electrical and Electronics Engineers
IEM                   Information Engineering Methodology
IEOS                  Integrated Electronic Office System
IET                   Image Enhancement Technology
IETF                  Internet Engineering Task Force
IEV                   International Electrotechnical Vocabulary
IFAC                  International Federation of Automatic Control
IFF                   Interchange File Format
IFIP                  International Federation of Information Processing
IFL                   Integrated Fuse Logic
IFPS                  Interactive Financial Planning System
IFR                   International Federation of Robotics
IFS                   Iterated Function System
IFSA                  International Fuzzy Systems Association
IGBT                  International Federation insulated Gate bipolar Transistor
IGES                  1) Initial Graphics Exchange Standard
                      2) Initial Graphics Exchange Specification
IGFET                 Insulated Gate Field Effective Transistor
IGMP                  Internet Group Multicast Protocol
IGP                   Interior Gateway Protocol
IGRP                  Interior Gateway Routing Protocol
IIRIAM                Institute International de Robotique et d'Intelligence Artificielle de Marseille
IKI                   Internet-Käyttäjät Ikuisesti iki ry
ILMI                  Interim Local Management Interface
IM-UAPDU              Interpersonal Message User Agent Protocol Data Unit
IM                    Instant Messenger
IMAC                  Internet MACintosh
IMACS                 Image Management and Communication System
IMAP                  Internet Message Access Protocol
IMDB                  In-Memory DataBase
IMDb                  the Internet Movie Database
IMD                   Insert Mounted Device
IMP                   Interface Message Processor
IMS                   Information Management System
IN                    Intelligent Network
INAS                  Interbank National Authorization Service
Indeo                 Intel Video Technology
INRIA                 Institut National de Recherche en Informatique et Automatique
INS                   Information Network Services
INT                   1) Integer
                      2) Interrupt
INTUG                 International Telecommunications Users' Group
IOCS                  Input-Output Control System
IOMMU                 Input/Output Memory Management Unit
IOP                   Input-Output Processor
IORDY                 I/O channel ReaDY
IP                    Internet Protocol
IPA                   1) Information Processing Architecture
                      2) Information-technology Promotion Agency
IPC                   Institute for interconnecting and Packaging electronic Circuits 
IPDU                  Internet Protocol Data Unit
IPI                   Intelligent Peripheral Interface
IPL                   Initial Program Load
IPng                  Internet Protocol next generation
IPNS                  Isdn Pbx Networking Signalling
IPO                   Input-Processing-Output
IPP	  				  Integrated Performance Primitives
                      Internet Printing Protocol
IPR	                  Intellectual Property Rights
IPS                   1) Internet Protocol Suite
                      2) Interruptible Power Supply
IPSE                  Integrated Project Support Environment
IPSEC	              Internet Protocol SECurity
IPSO                  Internet Protocol Security Option
IPSS                  International Packet Switching Service
IPTC                  International Press Telecommunications Council
IPU                   image processing unit
IPX                   1) Internet Packet eXchange protocol
                      2) Internet Package Xchange
IR                    1) Information Retrieve
                      2) Infra Red
                      3) Instruction Register
IRC                   Internet Relay Chat
IrDA                  Infrared Data Association
IrDA-FIR              Infrared Data Association Fast InfraRed data link standard
IrDA-MIR              Infrared Data Association Medium InfraRed data link standard
IrDA-SIR              Infrared Data Association Serial InfraRed data link standard
IRG                   Inter Record Gap
IRL                   Inter Repeater Link
IRM                   Information Resource Management 
IRP                   Interior Router Protocol
IRPASS                Interactive Robot Programming And Simulation System
IRTF                  Internet Resource Task Force
IRQ                   Interrupt ReQuest line
IS                    Indexed Sequential
IS-54                 Interim Standard 54
ISA                   1) Industry Standard Adapter
                      2) Industry Standard Architecture
ISAC                  Information System work and Analysis of Changes
ISAM                  Indexed Sequential Access Method
ISAPI                 Internet Server Application Program Interface
ISDN                  Integrated Services Digital Network
ISDOS                 Information System Design and Optimization System
ISDS/HOS              Integrated Software Development System/Higher Oder Software
ISEE                  Integrated System Engineering Environment
ISHM                  International Society for Hybrid Microelectronics nordic
ISIS                  Image and Scanner Interface Standard
ISN                   Information Systems Network
ISO                   International Standard Organization
ISO/IEC JTC1          International Standard Organization/ International Electrotechnical Commission Joint Technical Committee 1
ISO IP                International Standard Organization Internet Protocol
ISO TP                International Standard Organization Transport Protocol
ISOC                  Internet SOCiety
IsoENET               Isochronic EtherNET
ISP                   1) Internet Service Provider
                      2) Interoperable System Project
ISPS/PC               Interactive System Productivity System for PC
ISRM                  Initial Service Request Message
ISS                   1) Information System Study
                      2) International Switching Symposium
ISSA                  Information Systems Security Association
ISSCC                 International Solid State Circuits Conference
ISUP                  ISdn User Part
ISX                   Information Switching eXchange
IT                    Information Technology
ITAA                  Information Technology Association of America
ITB                   Intermediate Text Block
ITEE                  Information-Technology Engineer Examination
ITG                   Intelligent Test Generator
ITI                   1) Industrial Technology Institute
                      2) Interactive Terminal Interface
ITKY                  Imatran TietojenKäsittely-Yhdistys ry.
ITRC                  Information Technology Requirements Council
ITRON                 IndusTrial the Realtime Operating system Nucleus
ITU                   International Telecommunication Union
ITU-R                 International Telecommunication Union Radiocommunication
ITU-T                 International Telecommunication Union Telecommunication standardization sector
IVHS                  Intelligent Vehicle/Highway System
IVPN                  International Virtual Private Network
IVR                   Interactive Voice Responce
IW                    Information Warfare
IWAN                  Integrated Wide Area Network
IWF                   InterWorking Funktio
IWU                   Internet Working Unit



*J*
JA                    1) Jump Address
                      2) Jump if Above
JAD                   1) Joint Application Design
                      2) Joint Application Development
JAE                   Jump if Above or Equal
JANET                 Joint Academic NETwork
JAR                   Java ARchive
JBE                   Jump if Below or Equal
JBOD                  Just a Bunch Of Drives
JC                    Jump if Carry set
JCL                   Job Control Language
JDBC                  Java Database Connectivity
JDK                   Java Development Kit
JE                    Jump if Equal
JEDEC                 Joint Electronic Device Engineering Council
JEIDA                 Japanese Electronics Industry Development Association
JEPI                  Joint Electronic Payment Initiative
JES                   Job Entry System
JESSI                 Joint European Submiron SIlicon
JFC                   Java Foundation Classes
JFET                  Junction Field Effect Transistor
JFIF                  Jpeg File Interchange Format
JFS                   Journaled File System
JG                    Jump if Greater
JGE                   Jump if Greater or Equal
JIPDEC                Japan Information Processing DEvelopment Center
JIPS                  Janet Internet Protocol Service
JISA                  Japan Information Service industry Association
JIT                   Just-In-Time 
JITEC                 Japan Information Technology Engineers examination Center
JL                    Jump if Less
JLE                   Jump if Less than or Equal to
JLIP                  Joint Level Interface Protocol
JMAPI                 Java Management Application Program Interface
JMF                   Java Media Framework
JMP                   JuMP
JMS                   Java Message Service
JNA                   Jump if Not Above
JNAE                  Jump if Not Above or Equal
JNB                   Jump if Not Below
JNBE                  Jump if Not Below or Equal
JNDI                  Java Naming and Directory Interface 
JNG                   Jump if Not Greater
JNGE                  Jump if Not Greater or Equal
JNI                   Java Native Interface
JNLE                  Jump if Not Less or Equal
JNO                   Jump if No Overflow
JNP                   Jump if No Parity
JNS                   Jump if No Sign
JNZ                   Jump if Not Zero
JOE                   Java Objects Everywhere
JOHNNIAC              John Neumann Integrator and Automatic Computer 
JOSS                  Johnniac Open Shop System 
JOVIAL                Jules' Own Version of International Algorithmic Language
JPEG                  1) Joint Photographics Expert Group
                      2) Joint Photographic Experts Group
JPL                   Jet Propulsion Laboratory
JPNF                  Join-Projection Normal Form
JPO                   Jump if Parity Odd
JRE                   Java Runtime Environment
JS                    Jump if Sign
JSD                   Jackson Structured Design
JSP                   1) Jackson Structured Programming
                      2) Java Server Page
JSS                   Java-Script Style Sheet
JSSE                  Java Secure Socket Extension
JTAG                  Joint Testability Action Group
JTAPI                 Java Telephony Application Programming Interface
JTC                   Joint Technical Commission
JTM                   Job Transfer and Manipulation
JUGHEAD               Jonzy's Universal Gopher Hierarchy Excavation and Display
JUHA                  JUlkisHAllinnon palveluverkko
JVM                   Java Virtual Machine
JZ                    Jump if Zero



*K*
K                     Kilo
KAM                   Keep Alive Memory
KANTTI                KANTa-Hämeen TIetojenkäsittelyyhdistys ry.
KATI                  Kotimaisten Aikakauslehtiartikkeleiden TIetokanta
KATKO                 Kunnallishallinnon ATK-neuvOttelukunta
KB                    KeyBoard
Kb                    1) kilobit
                      2) kilobitti
KB                    1) kiloByte
                      2) kilotavu
KBD                   KeyBoarD 
KBE                   Knowledge Based Engineering
Kbps                  Kilobits per second
KBps                  KiloBytes per second
KBS                   Knowledge Base System
KC                    Knowledge Compiler
KDT                   Key Definition Table
KEFIR                 KEy FIndings Reporter
KEE                   Knowledge Engineering Environment
KES                   Knowledge Engineering System
KETKY                 KEski-suomen TietojenKäsittely-Yhdistys ry.
KEYB                  KEYBoard
kHz                   1) kiloHertz
                      2) kiloHertsi
KIF                   Knowledge Interchange Format
KIPS                  Knowledge Information Processing System
KIS                   Knowbot Information Service
KPI                   Kernel Programming Interface
KQML                  Knowledge Query and Manipulation Language
KRL                   1) Knowledge Representation Language
                      2) Knowledge Retrieval System
KSDS                  Keyed Sequential Data Set
KSH                   Korn SHell 
KSPH                  Keystrokes Per Hour
KSR                   Keyboard Send Receive
KT                    KiloTavu
KULTU                 KULuttajaTUtkimuksen tietokanta
KVM                   1) Keyboard, Video, Mouse
                      2) Kilobyte Virtual Machine
kw                    1) KiloWord
                      2) kilosana
KWIC                  KeyWord In Context
KYTKY                 KYmen TietojenKäsittely-Yhdistys ry.



*L*
L2F                   1) Layer Two Forwarding 
                      2) Layer 2 Forwarding
L2TP                  1) Layer Two Tunneling Protocol
                      2) Layer 2 Tunneling Protocol
                      3) Layer Two Transport Protocol
                      4) Layer 2 Transport Protocol
LADDR                 Layered Device Driver Architecture
LALL                  Longest Allowed Lobe Length
LAN                   Local Area Network
LANACS                Local Area Network Asynchronous Connection Server
LANDP                 LAN Distributed Platform
LANE                  Local Area Network Emulation
LANG                  LANGuage
LAP                   Linux Application Platform
LAPB                  Link Access Procedure Balanced 
LAPD                  Link Access Procedure on the D-Channel 
LAPM                  Link Access Procedure for Modems
LAR                   Load Access Rights
LASER                 Light Amplification by Stimulated Emission of Radiation
LASTport              Local Area Storage Transport
LAT                   1) Local Area Transport
                      2) Local Access Terminal
LATA                  Local Access and Transport Area
LAVC                  Local Area VAX Cluster
LAWN                  Local Area Wireless Network
LB                    Left Button (of mouse)
LBA                   1) Logical Block Address
                      2) Logical Block Addressing
LBL                   LaBeL
LBM                   deLuxe paint BitMap 
LBR                   1) LiBRarian
                      2) LiBRary
LBT                   Listen Before Talk
LBX                   Local Bus Accelerator
LCA                   1) Lonworks Component Architecture
                      2) Lotus Communications Architecture
LCC                   Leadless Chip Carrier
LCCM                  LAN Client Control Manager
LCD                   1) Liquid Crystal Display
                      2) Lowest Common Denominator
LCF                   Low Cost Fiber
LCK                   Library Construction Kit
LCP                   Link Control Protocol
LCR                   1) Least Cost Routing 
                      2) Line Control Register
LCS                   Liquid Crystal Shutter
LCSD                  Laminate Chip Signal Diode
LCU                   Last Cluster Used
LD                    Low Density
LDA                   Logical Device Address
LDAP                  Lightweight Directory Access Protocol 
LDC                   Lotus Development Corporation
LDDS                  Long Distance Discount Services
LDM                   1) Logical Disk Manager 
                      2) Long Distance Modem
LDP                   Label Distribution Protocol
LDT                   Local Descriptor Table
LE                    Less or Equal
LEA                   Load Effective Address
LEAD                  Live Early Adoption and Demonstration
LEAF                  Law Enforcement Access Field
LEC                   1) Local Area Network Emulation Client
                      2) Local Exchange Carrier 
LED                   Light Emitting Diode
LEL                   Link, Embed and Launch-to-edit
LEM                   Language Extension Module
LEN                   Low Entry Networking
LEO                   Low Earth Orbit
LEP                   Light-Emitting Polymers
LES                   Local Area Network Emulation Server
LET                   LETter
LEX                   LEXicon
LF                    Line Feed
LFAP                  Lightweight Flow Admission Protocol
LFI                   Last File Indicator
LFM                   Log File Monitor
LFN                   1) Long File Names
                      2) Long File Name
LFT                   Low Function Terminal
LFU                   Least Frequently Used
LGA                   Leadless Grid Array
LGDT                  Load Global Descriptor Table
LGPL                  Lesser General Public License
LH                    LoadHigh
LIAS                  Library Information Access System
LIB                   LIBrary
LIC                   Line Interface Coupler
LICS                  Lotus International Character Set 
LIDT                  Load Interrupt Descriptor Table
LIEP                  Large Internet Exchange Packet
LIF                   Low Insertion Force
LIFO                  Last In, First Out
LILO                  Last In, Last Out
LIM                   Lotus, Intel, Microsoft
LIM EMS               Lotus, Intel, Microsoft Expanded Memory Specification
LIMA                  Lotus, Intel, Microsoft, Ast
LIMDO                 Light Intensity Modulation Direct Overwrite
LIMM                  Light Intensity Modulation Method
LIMS                  Library Information Management System
LINUX                 LINUs torvalds uniX (ei virallinen)
LIP                   Large Internet Packet
LIPS                  1) Lightweight Internet Person Schema 
                      2) Logical Inferences Per Second
LISP                  LISt Processing
LISTSERV              List Server 
LIU                   LAN Interface Unit
LIW                   Long Instruction Word
LLC                   Logical Link Control
LLDT                  Load Local Descriptor Table
LLF                   Low Level Format
LM/X                  Lan Manager uniX
LMB                   Left Mouse Button
LMBCS                 Lotus Multi-Byte Character Set 
LMD                   Last Modification Date
LMDS                  Local Multipoint Distribution Service
LMI                   Link/Local Management Interface
LMOS                  Leave Mail On Server
LMS                   Lotus Messaging Switch
LMSW                  Load Machine Status Word
LMU                   1) Lan Management Utilities
                      2) Lan Manager for Unix
LN                    1) Load Number
                      2) Logaritmus Naturalis
LN:DI                 Lotus Notes:Document Imaging
LNK                   LiNK
LNS                   Lonworks Network Services
LOB                   Line Of Business
LOC                   1) Lines Of Code 
                      2) Loop On-line Control
LOCIS                 Library of Congress Information System
LOD                   1) Letter Of Destruction
                      2) Level Of Detail
LODSB                 Load String Byte
LOG                   LOGarithm
LOL                   Laughing Out Loud             
LON                   Local Operating Network
LOOPE                 LOOP while Equal
LOOPNE                LOOP while Not Equal
LOOPNZ                LOOP while Not Zero
LOOPZ                 LOOP while Zero
LORE                  Line ORiented Editor
LPAR                  Logic Programming and Automated Reasoning
LPC                   Local Procedure Call
LPD                   Line Printer Daemon
LPDU                  Logical Protocol Data Unit
LPI                   1) Link Power Interface
                      2) Lines Per Inch
LPL                   Lotus Programming Language 
LPM                   Lines Per Minute
LPN                   Logical Page Number
LPR                   1) Line PRinter 
                      2) Line Printer Remote
LPS                   Low-Power Schottky
LPT                   1) Line PrinTer
                      2) Line Printer Terminal
LQ                    Letter Quality
LQM                   Link Quality Monitoring 
LR                    Link Register
LRC                   1) Local Register Cache
                      2) Longitudinal Redundancy Check
LRE                   Long Reach Ethernet
LRL                   Least Recently Loaded
LRM                   1) Language Reference Manual 
                      2) Least Recently-used Master
LRQ                   Location ReQuest
LRS                   Language ReSource 
LRU                   Least Recently Used
LSA                   1) LAN and SCSI Adapter 
                      2) Line Sharing Adapter 
                      3) Local Security Authority
LSAPI                 License Services Application Program Interface
LSASS                 Local Security Administration SubSystem
LSB                   Least Significant Bit
LSC                   Least Significant Character
LSD                   Least Significant Digit
LSI                   Large-Scale Integration
LSL                   1) Link Support Layer 
                      2) Load Segment Limit
LST                   LiST 
LTO                   Linear Tape Open
LTPS                  Low-Temperature PolySilicon
LTR                   1) Left-To-Right 
                      2) LeTteR
                      3) Load Task Register
LU                    Logical Unit 
LUA                   Logical Unit Application
LUI                   Local User Input
LUIS                  Library User Information Service
LUN                   Logical Unit Number
LUT                   Lookup Table
LV                    Logical Volume 
LVDS                  Low-Voltage Differential Signaling
LVM                   Logical Volume Management 
LW                    Lazy Write
LYR                   LYRics
LZW                   Lempel-Ziv-Welch 



*M*
MAC                   1) MACintosh
                      2) MACpaint 
                      3) Media Access Control
MAN                   Metropolitan Area Network
MAU                   1) Media Access Unit
                      2) Media Adapter Unit
                      3) Multistation Access Unit
MB                    1) MegaByte
                      2) Middle Button
Mb                    1) Megabit
                      2) Megabitti
MBps                  Megabytes per second
Mbps                  Megabits per second
MBR                   Master Boot Record
MCA                   Micro Channel Architecture
MCGA                  Memory Controller Gater Array
MCI                   Media Control Interface
MCM                   MultiChip Modules
MDA                   Monochrome Display Adapter
MDRAM                 Multibank Random Access Memory
MFM                   Modified Frequency Modulation
MFR                   Monthly Failure Rate
MGA                   Hercules Monochrome Graphics Adapter
MHS                   Message Handling System
MHz                   1) MegaHertZ
                      2) MegaHertsi
MIDI                  Musical Instrument Digital Interface
MIME                  1) Multipurpose Internet Mail Extensions
                      2) Multimedia Internet Message Extensions                 
MIPS                  Millions of Instructions Per Second
MMS                   1) Multimedia Messaging Service
                      2) Multimedia MeSsaging
MMU                   Memory Management Unit
MMX                   MultiMedia eXtensions
MO                    Magneto Optical, Magneettis-Optinen
MOS                   Metal-Oxide Semiconductor
MP3                   MPeg-1 layer 3
MPC                   Multimedia Personal Computer
MPP                   1) Massively Parallel Processing
                      2) Massively Parallel Processors
                      3) Message Posting Protocol 
                      4) Message Processing Program
MPPC                  Microsoft Point-to-Point Compression
MPQP                  Multi-Protocol Quad Port
MPEG                  Motion Picture Expert Group standard
MPU                   MicroProcessor Unit
MS                    MicroSoft
MS-DOS                MicroSoft Disk Operating System
MSA                   My Second Address
MSAU                  Multi-Station Access Unit
MSAV                  MicroSoft Anti Virus 
MSCDEX                MicroSoft CD ROM Extensions
MSD                   MicroSoft Diagnostics
MSI                   1) Medium-Scale Integration
                      2) Micro-Star International co.,ltd. 
MSIE                  MicroSoft Internet Explorer
MSN                   MicroSoft Network
MSP                   MicroSoft Paint 
MSW                   Machine Status Word
MT                    MegaTavu
MTBF                  Mean Time Betveen Failure
MVS                   Multiple Virtual Storage
MVT                   Multiprogramming with a Variable number of Tasks
MZR                   Multiple Zone Recording



*N*
NAC                   Network Adapter Card
NACD                  National Association of Computer Dealers
NACS                  National advisory Committee on Semiconductors
NAE                   Not Above or Equal
NAK                   Negative AcKnowledgment
NAL                   Novell Application Launcher
NAM                   Number Assignment Module
NAMPS                 Narrow-band Analog Mobile Phone Service
NAND                  Not AND
NAP                   Network Access Point
NAPLPS                North American Presentation Level Protocol Syntax
NAS                   1) Network Access Server 
                      2) Network Attached Storage
                      3) Network Application Support
NASA                  National Aeronautics and Space Administration
NASI                  Netware Asynchronous Services Interface
NASIRC                Nasa Automated Systems Internet Response Capability
NASKER                Nasa Ames KERnel
NAT                   Network Address Translation
NAU                   Network Addressable Unit
NAVSTAR               NAVigation Satellite Timing And Ranging
NAWS                  Negotiate About Window Size
NBE                   Not Below or Equal
NBI                   Nothing But Initials
NBMA                  Non-Broadcast Multi Access
NBP                   NetBios Plus
NBS                   1) Narrowband Socket
                      2) National Bureau of Standards
                      3) Numeric Backspace
NC                    1) Network Computer
                      2) No Carry 
                      3) Numerical Control
                      4) Normal Close
NCA                   1) Network Communications Adapter
                      2) Network Computing Architecture
NCC                   Network Control Center
NCD                   Network Computing Device
NCGA                  National Computer Graphics Association
NCI                   Network Configurate Input
NCIC                  National Crime Information Center
NCMT                  Numerical Control for Machine Tools
NCOS                  Network Computer Operating System
NCP                   1) Netware Core Protocol
                      2) Not Copy Protected
                      3) Network Control Processor/Program/Protocol
NCQ                   Native Command Queuing
NCR                   National Cash Register
NCSA                  National Center for Supercomputing Applications
NCSC                  National Computer Security Center
NCSI                  Network Communications Services Interface
NDB                   Non-Directional Beacon
NDDK                  Network Device Development Kid 
NDEF                  Not to be DEFined
NDIS                  Network Device Interface Specification
NDL                   Network Data Language
NDMP                  Network Data Management Protocol
NDN                   Non-Delivery Notice
NDP                   Numeric Data Processor
NDR                   Network Data Representation
NDRO                  Non-Destructive Read Out
NDS                   Neteare Directory Service
NEC                   Nippon Electric Company
NED                   Nas Extragalactic Database
NEG                   1) NEGative
                      2) NEGate
NEMA                  National Electrical Manufacturers Association
NEP                   Network Entry Point
NES                   National Education Supercomputer
NEST                  Novell Embedded Systems Technology
NETBEUI               NETBios Extended User Interface
NETBIOS               NETwork Basic Input Output System
NETMON                NETwork MONitor
NEWS                  1) NetWare Early Warning System
                      2) Network Extensible Window System
NEXT                  Near-End crossTalk
NFF                   No Fault Found
NFS                   Network File System
NG                    No Good
NGE                   Not Greater or Equal
NGI                   Next-Generation Internet
NHC                   National Hurricane Center
NHR                   National Handwriting Recognition
NHRP                  Next Hop Resolution Protocol
N/I                   Non-Interlaced
NIA                   Next Instruction Address
NIC                   1) Network Interface Card
                      2) Network Information Center
                      3) Numeric Intensive Computing
NICAD                 1) NIkkeli-KADmium
                      2) NIckel-CADmium
NICOLAS               Network Information Center OnLine Aid System
NID                   1) New Interactive Display
                      2) Next ID
NII                   National Information Infrastructure
NIM                   Network Installation Management
NIMH                  1) NIkkeli-MetalliHydridi
                      2) NIckel-Metal Hydride
NIO                   Native Input/Output
NIPS                  Network I/os Per Second
NIR                   Network Information Retrieval
NIS                   Network Information Service 
N-ISDN                1) Narrowband ISDN
                      2) National ISDN
NISO                  National Information Standards Organization
NISP                  Networked Information Services Project
NIST                  National Institute for Standards and Technology
NITC                  National Information Technology Center
NIU                   Network Interface Unit
NJE                   Network Job Entry
NL                    New Line
NLE                   Not Less or Equal
NLM                   Netware Loadable Module
NLP                   Natural-Language Processing
NLQ                   Near Letter Quality
NLSFUNC               National Language Support FUNCtion
NLV                   National Language Version
NMI                   Non-Maskable Interrupt
NMM                   NetWare Management Map
NMOS                  Negative channel Metal-Oxide Semiconductor
NMP                   Network Management Protocol
NMS                   Network Management System
NN                    1) Network Node
                      2) No News
NNI                   Network to Network Interface
NNM                   Network Node Manager
NNTP                  Network News Transfer Protocol
NO                    Normal Open
NOC                   Network Operations Center
NOP                   No OPeration
NOPAC                 Network OPAC
NOR                   Not Or
NOS                   Network Operating System
NPA                   1) Network Printer Alliance
                      2) Numbering Plan Area
NPI                   Network Printer Interface
NPL                   NonProcedural Language
NPS                   Novell Productivity Specialist
NPT                   Non-Programmable Terminal
NPTN                  National Public Telecomputing Network
NPU                   Natural Processing Unit
NPX                   Numeric Processor eXtension
NQS                   Network Queuing System
NRC                   National Research Council (canada)
NREN                  National Research and Education Network
NRM                   Network Resource Manager
NRZ                   Not Return to Zero
NRZI                  Non Return to Zero Inverted
NS                    1) NanoSecond
                      2) National Semiconductor
                      3) Network Supervisor
                      4) Non Stop
NSAP                  Network Service Access Point
NSAPI                 Netscape Server API
NSA POLY              National Security Agency POLYgraph
NSERC                 National Sciences and Engineering Research Council (canada)
NSF                   National Science Foundation
NSFNET                National Science Foundation NETwork
NSI                   Nasa Science Internet
NSLOOKUP              Name Server LOOKUP
NSM                   Netscape Server Manager
NSP                   1) Native Signal Processing
                      2) Network Services Protocol
                      3) Network Service Provider
NSS                   Network Services Server
NSSC                  Nasa Standard Spacecraft Computer
NSTC                  National Science and Technology Council
NSTL                  National Software Testing Labs
NT                    New Technology
NT-1                  Network Terminator type 1
NTAS                  NT Advanced Server
NTF                   No Trouble Found
NTFS                  New Technology File System
NTIA                  National Telecommunications and Information Administration
NTIS                  National Technical Information Service
NTP                   Network Time Protocol
NTRAS                 NT Remote Access Services
NTSA                  NetWare Telephony Services Architecture
NTSC                  National Television Standards Committee
NTU                   Network Termination Unit
NUI                   1) Network User Identification
                      2) Network User Interface
                      3) Notebook User Interface
NUL                   NULl
NUMA                  Non-Uniform Memory Access
NV                    No oVerflow
NVM                   Non-Volatile Memory
NVOD                  Near-Video On Demand
NVP                   Nominal Velocity of Propagation
NVRAM                 Non-Volatile Random Access Memory
NVT                   1) Network Virtual Terminal
                      2) Novell Virtual Terminal
NWS                   Netware Web Server
NYM                   anoNYMous




*O*
OA                    Office Automation
OADM                  Optical Add & Drop Multiplexer 
OAG                   Official Airline Guide
OAIS                  Open Archival Information System 
OAM                   1) Object Access Method
                      2) Operation And Maintenance
OC                    Optical Carrier 
OCE                   Open Collaboratorio Environment
OCF                   Object Components Framework
OCR                   1) Optical Character Regognition
                      2) Optical Character Reading
OCS                   Original Chip Set
ODBC                  1) Open DataBase Connectivity
                      2) Open DataBase Computing driver 
ODBS                  Open DataBase Connectivity
ODI                   Open Data-link Interface
OEM                   Original Equipment Manufacturer
OFDM                  Orthogonal Frequency Division Multiplexing
OGL                   Open Graphics Library
OLA                   Optical Line Amplification 
OLAP                  OnLine Analytical Processing  
OLE                   1) Object Linked Embedded
                      2) Object Linking and Embedding
                      3) On-Line-English
OLEDB                 Object Linked Embedded DataBase 
OLTP                  OnLine Transaction Processing 
OMAP                  Open Multimedia Application Platform
OMEN                  Offline Message ENvironment
O-MSP                 Optical Multiplex Section Protection 
OMT                   Object Modeling Technique 
OMT                   Object Modelling Technique
OPC                   Ole for Process Control
OpenGL                Open Graphics Library
ORB                   Object Request Broker 
ORDBMS                Object Relational DataBase Management System 
OS                    Operating System
OSI                   Open System Interconnection
OSI RM                Open System Interconnection Architecture Reference Model
OSITOP                Open System Interconnection Technical and Office Protocol
OSPF                  Open Shortest Path First  
OSR2                  Operating System Release 2
OU                    Organization Unit 
OVR                   OVeRlay



*P*
P2P                   1) Peer To Peer
                      2) People To People
PAL                   Programmable Array Logic
Pas                   Pascal
PBM                   Portable BitMap
PC                    Personal Computer
PC-DOS                Personal Computer Disk Operating System
PCB                   1) Printed Circuit Board
                      2) Program Control Block
PCC                   PC Card
PCD                   Photo CD
PCI                   1) Peripheral Component Interface
                      2) Peripheral Component Interconnect
                      3) Peripheral Connection Interface
PCL                   Printer Control Language
PCLP                  PC Lan Program
PCLTA                 PC LonTalk Adapter
PCM                   1) Pulse Code Modulation
                      2) Personal Computer Manufacturer
                      3) Printer Cartridge Metric
PCMCIA                Personal Computer Memory Card International Association
PDA                   Personal Digital Assistant
PDF                   Portable Document Format
PDH                   Plesiochronous Digital Hierarchy
PDLI                  Page Description Language
PEL                   Picture ELement
PGA                   1) Professional Graphics Adapter
                      2) Pin Grid Array
PGM                   Portable GrayMap
PHP                   1) Php Hypertext Preprocessor
                      2) Personal Home Pages
PI                    Program Interruption
PIA                   Peripheral Interface Adapter
PIC                   1) Programmable Interrupt Controller
                      2) Peripheral Interface Controller
                      3) Personal Intelligent Communicator
                      4) Personal Information Carrier
                      5) Platform for Internet Content
                      6) Priority Interrupt Controller
                      7  Program Interrupt Controller
PICS                  Platform for Internet Content Selection
PICT                  PICTure
PID                   1) Process Identification Number
                      2) Product ID
                      3) Proportional, Integral, Derivative
PIER                  Procedures for Internet/Enterprise Renumbering
PIF                   Program Information File
PIO                   1) Parallel Input/Output
                      2) Processor Input/Output
                      3) Programmed Input/Output
PL/C                  Programming Language/Cornell
PLC                   1) Power Line Communications
                      2) Programmable Logic Controller
                      3) Power Line Carrier
PLCC                  Plastic Leaded Chip Carrier
PLD                   Programmable Logic Device
PLT                   Power Line Tranceiver
PLU                   Primary Logical Unit
PNA                   Programmable Network Access
PNG                   Portable Network Graphics
PnP                   Plug and Play
POH                   Power On Hour
POP                   Post Office Protocol
POS                   Programmable Option Select
POSIX                 Portable Operating System Interface for uniX
POST                  Power On Self Test
POTS                  1) Plain Old Telephone Service
                      2) Plain Old Time-Sharing
POWER                 Performance Optimization With Enhanced Risc
PowerPC               Performance Optimization With Enhanced Risc-Performance Computing
PPC                   PowerPC
PPM                   1) Pages Per Minute
                      2) Portable PixelMap
PPN                   Peer-to-Peer Networking
PPP                   Point-to-Point Protocol
PPPOE                 Point-to-Point Protocol Over Ethernet
PPS                   1) Packets Per Second
                      2) Power Personal Systems 
PPTP                  Point-to-Point Tunneling Protocol
PQFP                  Plastic Quad Flat Pack
PRN                   PRiNter port
PS                    1) Personal System
                      2) Proportional Spacing
PS/2                  Programming System 2
PSC                   1) Personal Super Computer
                      2) Print Server Command
                      3) Product Service Center
PSSC                  Public Service Satellite Consortium
PSTN                  Public Switched Telephone Network
PT                    1) Payload Type
                      2) Posti-Tele
                      3) Program Tab
PW                    PassWord
PWB                   Printed Wire Board
                      Programmer's WorkBench
PWD                   Print Working Directory
PWL                   PassWord List
PWM                   1) Pulse Wave Modulation
                      2) Pulse Width Modulation
                      3) Pulse Width Modulator
PWR                   PoWeR
PWSCS                 Programmable WorkStation Communication Services
PWW                   1) Project Wide Web
                      2) Phenix-Wide Web
                      3) Personalised world Wide Web



*Q*
QA                    Quality Assurance
QAM                   Quadrature Amplitude Modulation
QBASIC                Quick BASIC
QBE                   Query By Example
QBF                   Query by Form
QBIC                  Query By Image Content
QC                    Quality Control
QCIF                  Quarter Common Intermediate Format
QCL                   Quickly Customized Logic
QD                    1) Querty/Dvorak
                      2) QDos
QDA                   Qualitative Data Analysis
QDOS                  Quick and Dirty Operating System
QEMM                  Quarterdeck Expanded Memory Manager
QFA                   Quick File Access
QFE                   Quick-Fix Engineering
QFP                   Quad Flat Pack
QIC                   1) Quarter Inch Cartridge
                      2) Quality Information Using Cycle Time 
QL                    1) Quantum Leap                      
                      2) Query Language
QLLC                  Qualified Logical Link Control
QNX                   Quick uNiX
QOS                   Quality Of Service
QPG                   Quantum Phase Gate
QPSK                  Quadrature Phase-Shift Keying 
QPSX                  Queue Packet and Synchronous Circuit Exchange
QSAM                  Queued Sequential Access Method
QTC                   Quicktime Conferencing




*R*
RACF                  Resource Access Control Facility
RADIUS                Remote Authentication Dial-in User Service  
RADSL                 Rate Adaptive Asymmetric Digital Subscriber Line 
RAID                  1) Redundant Array of Independent Disks 
                      2) Redundant Array(s) of Inexpensive Disks
RAM                   Random Access Memory
RARP                  Reverse Address Resolution Protocol  
RAS                   1) Remote Access Server
                      2) Remote Access Service
                      3) Riktlinjer för Administrativa System
RB                    Read Buffer
RBS                   Robbed-Bit Signaling 
RD                    Receive Data 
RDBMS                 Remote Data Base Management System 
RDNIS                 Redirected Dial Number Id Service 
RDP                   1) Remote Desktop Protocol
                      2) Reliable Datagram Protocol
RDRAM                 Rambus Dynamic Random Access Memory
RED                   Random Early Detection
REL                   Release Message 
RET                   Resolution Enhancement Technology
REXX                  Restructured Extended Executor
RF                    Radio Frequency
RFC                   Request For Comments  
RFT                   Revisable Form Text
RGB                   Red Green Blue 
RI                    Ring Indicator
RI                    Routing Information 
RIC                   Real Time Interface Co-processor
RIF                   Routing Information Field  
RIFF                  Resource Interchange File Format 
RIM                   Research In Motion 
RIMM                  Rambus In-line Memory Modules 
RIP                   1) Raster Image Processor
                      2) Routing Information Protocol  
RISC                  1) Reduced Instruction of Set Computer
                      2) Reduced Instruction Set Computer 
RJE                   Remote Job Entry
RLE                   Run Length Encoded
RLL                   Run Length Limited  
RLOGIN                Remote LOGIN
RLP                   Radio Link Protocol 
RM                    Rate Management
RMI                   Remote Method Invocation 
RMON                  Remote Monitor 
RMS                   Root Mean Square 
RNR                   Receive Not Ready 
ROM                   Read Only Memory
ROSE                  Remote Operations Services Element  
RPC                   Remote Procedure Call 
RPM                   1) Rotations Per Minute
                      2) Revolutions Per Minute
RR                    1) Receiver Ready 
                      2) Real Reality
RRAS                  Routing and Remote Access Service 
RRL                   Remote Reference Layer
RRP                   Recommended Retail Price
RRQ                   1) Registration ReQuest 
                      2) Return Receipt reQuest
RS                    Request to Send
RS/6000               RISC System/6000
RSA                   Rivest-Shamir-Adelman
RSH                   Remote SHell 
RSRB                  Remote Source Route Bridging
RSS                   1) Really Simple Syndication
                      2) Rdf Site Summary
                      3) Rich Site Summary
RSVP                  Resource reSerVation Protocol
RTC                   Real Time Clock 
RTCP                  Real-Time Transport Control Protocol 
RTF                   Rich Text Format 
RTIC                  Real Time Interface Co-processor
RTL                   Register Transfer Level
RTM                   Response Time Monitor 
RTMP                  Routing Table Maintenance Protocol
RTP                   Real Time Protocol
RTPM                  Real Time Performance Monitor 
RTS                   Request To Send
RTSP                  Real-Time Streaming Protocol 
RU                    Request Unit
RxD                   Receive Data



*S*
S/SL                  Syntax/Semantic Language
SAM                   System Account Manager
SaMBA                 Smart and Modular Building Automation
SAN                   1) Storage Area Network
                      2) System Area Network
SAP                   1) Service Access Point
                      2) Service Advertising Protocol
SB                    Sound Blaster
SB16                  Sound Blaster 16
SBC                   Single-Board Computer
SC                    Standard Cell
SCSI                  Small Computer System(s) Interface
SD                    Single Density
SDA                   Send Data with Acknowledge
SDH                   Synchronous Digital Hierarchy
SDL                   Specification and Design Language
SDLC                  Synchronous DataLink Control
SDP                   Session Description Protocol
SDRAM                 Synchronous Dynamic Random Access Memory
SDSL                  1) Single-Line Digital Subscriber Line
                      2) Symmetric Digital Subscriber Line
SET                   Secure Electronic Transactions
SGRAM                 Synchronous Graphics Random Access Memory
SID                   1) Security IDentifier       
                      2) Station IDentification
                      3) Serial Input Data
                      4) Symbolic Interactive Debugger
                      5) System ID
SIMM                  Single Inline Memory Module
SIPP                  Single Inline Pin Package
SLDRAM                SyncLink Dynamic Random Access Memory
SLED                  Single Large Expensive Disk
SLI                   1) Scan Line Interleave
                      2) Scalable Link Interface
SLIP                  Serial Line Interface Protocol
SLTA                  Serial LonTalk Adapter
SMSAU                 Smart Multi-Station Access Unit
SMB                   Server Message Block
SMD                   Storage Module Device
SMM                   System Management Mode
SMNP                  Simple Network Management Protocol
SMP                   1) SiMetrical Prosessing unit
                      2) Simple Management Protocol
                      3) Symbolic Manipulation Program
                      4) Symmetrical Multi-Processing
                      5) Symmetric MultiProcessor
SMS                   1) System Management Server
                      2) System Managed Storage
                      3) Short Message Service
SMTP                  Simple Mail Transfer Protocol
SNA                   Systems Network Architecture
SNI                   1) Siemens Nixdorf Informationsysteme ag
                      2) SNA Network Interconnection
                      3) Subscriber Network Interface
SNMP                  Simple Network Management Protocol
SNVT                  Standard Network Variable Type
SOHO                  Small Office / Home Office
SOS                   1) Silicon-On-Sapphire
                      2) Sophisticated Operating System
S/PDIF                Sony Philips Digital InterFace
SPARC                 1) Scalable Processor ARChitecture
                      2) Sun's Palo Alto Research Center
SPX                   Sequenced Packet Exchange
SQL                   Structured Query Language
SRAM                  Static Random Access Memory
SRM                   Security Reference Monitor
SRMMU                 Sparc Reference Memory Management Unit
SS                    Single Sided
SSH                   Secure SHell
SSI                   1) Small-Scale Integration
                      2) Server Side Includes
                      3) Single System Image
SSID                  Service Set IDentifier
SSL                   1) Secure Sockets Layer
                      2) Synthesizer Specification Language
STN                   Super Twisted Nematic
STP                   Shielded Twisted Pair
SVCD                  Super VideoCD
SVGA                  Super Video Graphics Array



*T*
TAC                   Technical Assistance Center 
TAD                   Technical Audio Device 
TAP                   Table-Automated Bonding
TAPI                  Telephony Application Program Interface
Tarkki                Tietokonearkkitehtuuri(t) 
TB                    1) Tera Bytes 
                      2) Transmit Buffer
TC                    Transmit Clock
TCA                   Target Channel Adapter 
TCO                   1) Tjänstemännens CentralOrganisation
                      2) Total Cost of Ownership 
TCP                   Transmission Control Protocol 
TCP/IP                Transmission Control Protocol/Internet Protocol
TD                    Transmitted Data 
TDM                   Time Division Multiplexing  
TDMA                  Time Division Multiple Access 
TDR                   Time Domain Reflectometer 
TELNET                TELecommunications NETwork protocol
TETRA                 1) TErrestrial Trunked RAdio
                      2) TransEuropean Trunking RAdio
TFLOPS                Tera FLoating-point Operations Per Second 
TFT                   Thin Film Transistor 
TFTP                  Trivial File Transfer Protocol 
TGA                   Truevision Graphics
TI                    Texas Instruments 
TIC                   Token-Ring Interface Coupler 
TIFF                  Tagged Image File Format   
TIGA                  Texas Instruments Graphics Architecture
TL                    Tuomas Lehtinen
TLS                   1) Transport Layer Security
                      2) Transport Level Security  
TN                    Twisted Nematic
TOC                   Table Of Contents
TOS                   Type Of Service 
TP                    Twisted Pair
TPF                   Transaction Processing Facility
TPT                   Twisted Pair Tranceiver
TPU                   Text Processing Utility 
TR                    1) Token-Ring
                      2) Terminal Ready   
TSAP                  Transport Service Access Point 
TSAPI                 Telephony Services API 
TSI                   Transmitting Subscriber Information 
TSO                   Time Sharing Option 
TSR                   Terminate and Stay Resident 
TTCN                  Tree and Tabular Combined Notation
TTD                   Temporary Text Delay
TTF                   True Type Font
TTL                   1) Time To Live 
                      2) Transistor-Transistor Logic 
TTY                   Teletype 
TUI                   Telephony User Interface 
TWAIN                 Technology Without Any Interesting Name 
TxD                   Transmit Data 



*U*                  
UA                    1) User Agent
                      2) User Area
                      3) Unnumbered Acknowledgement 
UAE                   Unrecoverable Application Error
UAM                   User Authentication Method
UART                  Universal Asynchronous Receiver/Transmitter
UAS                   User Application Software
UBR                   Unspecified Bit Rate 
UCE                   Unsolicited Commercial Email
UCL                   Universal Communications Language
UCS                   1) Unicode Conversion Support 
                      2) Universal Character Set
                      3) User Coordinate System
UCT                   Universal Coordinated Time
UDA                   Universal Data Access 
UDB                   1) Universal DataBase 
                      2) Universal DeBugger
UDC                   1) Universal Decimal Classification
                      2) User Defined Commands
UDD                   User Data Document
UDDI                  Universal Description, Discovery and Integration 
UD-DVD                Ultra-Definition Digital Video Disk
UDE                   Universal Data Exchange
UDEC                  Universal Digital Electronic Computer
UDF                   1) Universal Disk Format 
                      2) User Defined Functions
UDG                   User Defined Gateway
UDMA                  1) Ultra-Direct Memory Access
                      2) Ultra-DMA
UDP                   User Datagram Protocol
UDT                   1) Uniform Data Transfer 
                      2) User-Defined Type
UFS                   Unix File System
UG                    User Group
UHCI                  Universal Host Controller Interface
UHF                   Ultra-High Frequency
UHL                   Universal Hypertext Link
UI                    1) User Interface 
                      2) Unix International
UIC                   1) User Identification Code
                      2) Universal Integrated Communication (system)
UID                   1) User IDentification 
                      2) User IDentifier
UIMS                  User Interface Management System
UIO                   Universal I/O
UKK                   Usein Kysytyt Kysymykset
UL                    1) UpLoad
                      2) Underwriters Laboratories
                      3) Unordered List
ULA                   Uncommitted Logic Array
ULN                   Universal Link Negotiation
ULSI                  Ultra Large-Scale Integration
UMA                   1) Upper Memory Area
                      2) Unified Memory Architecture
UMB                   Upper Memory Block
UML                   Unified Modeling Language 
UMS                   User Mode Scheduler
UMTS                  1) Universal Mobile Telephone System
                      2) Universal Mobile Telecommunications System
UNC                   1) Uuencoded Netnews Collator
                      2) Universal Naming Convention  
UNCOL                 Universal Computed Oriented Language
UNEP                  Unbundled NEtwork Platform
UNI                   User Network Interface
UNII                  Unlicensed National Information Infrastructure
UNIVAC                UNIVersal Automatic Computer
UNIX                  UNIpleX information and computer services 
UNMA                  Unified Network Management Architecture
UNSPSC                Universal Standard Products and Services Classification
UP                    UniProcessor
UPC                   1) Universal Product Code
                      2) Universal Program Code 
                      3) User Parameter Control
UPG                   UPGrade
UPL                   User Program Language
UPM                   1) Unix Programmer's Manual
                      2) User Profile Management
UPS                   1) Uninterruptable Power Supply 
                      2) Uninterruptable Power System 
                      3) Uninterrupted Power Supply
UPS                   Uninterruptible Power Supply/System
URC                   1) Uniform Resource Characteristics
                      2) Uniform Resource Citation
UREP                  Unix Rscs Emulation Protocol
URI                   Uniform Resource Identifier
URL                   1) Uniform Resource Locator
                      2) Universal Resource Locator
URN                   1) Uniform Resource Name
                      2) Uniform Resource Number
US                    Unit Separator
USART                 Universal Synchronous-Asynchronous Receiver/Transmitter
USB                   Universal Serial Bus
USCW                  Uncacheable Speculative Write Combining 
USENET                USEr's Network
USERID                User Identification
USOC                  1) Universal Service Order Codes 
                      2) Universal Service Ordering Code
USPARC                Ultra Scalable Processor Architecture Reduced instruction set Computer
USQ                   UnSQueezed 
USR                   US Robotics 
USRT                  Universal Synchronous Receiver/Transmitter
USSA                  User Supported Software Association
UT                    User Terminal
UTC                   Coordinated Universal Time
UTF                   Unicode Transformation Format
UTI                   1) Universal Text Interchange
                      2) Universal Text Interface
UTP                   Unshielded Twisted-Pair (cable)
UU                    Uuencode/Uudecode
UUCP                  Unix-To-Unix Copy Protocol
UUD                   UUDecoding
UUDECODE              Unix-to-Unix DECOding
UUE                   UUEncoding 
UUENCODE              Unix-to-Unix ENCOding
UUI                   User-to-User Information
UUID                  Universal Unique IDentifier
UV                    UltraViolet
UWR                   Ultra Wideband Radio
UXGA                  Ultra eXtended Graphics Array




*V*
V&V                   Verification and Validation
V.FC                  Version.First Class
VA                    1) Virtual Address
                      2) Visual Age
VAD                   Value Added Dealer
VADD                  Value Added Disk Driver
VAI                   Video As Input 
VAL                   1) VALue 
                      2) Voice Application Language
                      3) VALidity checks
VAM                   Virtual Access Method
VAN                   1) Vehicle Area Network 
                      2) Value Added Network
VAP                   Value Added Process
VAR                   1) VARiable
                      2) Value Added Reseller 
                      3) Value Added Retailer
VAST                  Variable Array Storage Technology
VAX/VMS               Virtual Address eXtension/Virtual Memory System
VB                    1) Visual Basic
                      2) Variable Block 
VBA                   Visual Basic for Applications 
VBE                   Vesa Bios Extensions
VBE/AI                Vesa Bios Extension/Audio Interface
VBI                   Vertical Blanking Interval
VBM                   Virtual Bandwidth Management 
VBNS                  Very high speed Backbone Network Service 
VBR                   Variable Bit Rate 
VBRUN                 Visual Basic RUNtime
VBS                   Visual Basic Script
VBScript              Visual Basic Script
VBX                   Visual Basic eXtension
VC                    Virtual Circuit  
VCC                   Virtual Channel Connection
VCD                   1) VideoCD  
                      2) Video Compact Disk
                      3) Virtual Communications Driver
VCI                   1) Virtual Circuit Identifier
                      2) Virtual Channel Identifier
VCL                   Visual Component Library
VCM                   Virtual Channel Memory
VCN                   Virtual Cluster Number
VCOS                  Visual Caching Operating System 
VCPI                  Virtual Control Program Interface
VCR                   Video Cassette Recorder
VDD                   Virtual Device Driver
VDDM                  Virtual Device Driver Manager
VDE                   1) Video Display Editor 
                      2) Visual Development Environment
VDI                   Virtual Device Interface
VDISK                 Virtual DISK
VDM                   1) Virtual Device Metafile 
                      2) Virtual Dos Machine 
VDMAD                 Virtual Direct Memory Access Device
VDS                   Virtual DMA Services
VDSL                  Very high bit-rate Digital Subscriber Line
VDT                   1) Video Dial Tone 
                      2) Video Display Terminal
VDU                   1) Video Display Unit              
                      2) Visual Display Unit
VEGA                  Video-7 Enhanced Graphics Adapter 
VEMM                  Virtual Expanded Memory Manager
VEMMI                 VErsatile MultiMedia Interface
VER                   1) VERsion
                      2) VERify 
VERONICA              Very Easy Rodent-Oriented Net-wide Index to Computer Archives 
VERR                  VERify Read access
VERW                  VERify Write access
VES                   Video Encoding Standard 
VESA                  Video Electronics Standards Association
VF                    Virtual Floppy
VFAT                  Virtual File Allocation Table
VFD                   Vacuum Fluorescent Display
VFW                   Video For Windows
VGA                   Video Graphics Array
VGC                   Video Graphics Controller
VHD                   Very High Density
VHDL                  Vhsic Hardware Description Language
VHF                   Very-High Frequency
VHS                   1) Video Home System
                      2) Very High Speed
                      3) Virtual Host Storage
VHSIC                 Very High Speed Integrated Circuit
VI                    Visual Interactive
VIA                   Virtual Interface Architecture 
VIE                   Virtual Information Environment
VIF                   1) Virtual InterFace
                      2) Virtual Interrupt Flag
VIM                   1) Vendor Independent Mail 
                      2) Vendor Independent Messaging 
                      3) Video Interface Module
VINES                 VIrtual Networking System 
VIO                   1) Video Input/Output
                      2) Virtual Input/Output
VIP                   1) Variable Information Processing 
                      2) Video Information Provider 
                      3) Virtual Interrupt Pending 
                      4) Visual Interactive Parser
ViP                   Visual Programming
VIPER                 Verifiable Integrated Processor for Enhanced Reliability
VIS                   1) Video Information System
                      2) Viewable Image Size 
                      3) Visual Instruction Set
                      4) Voice Information System
VISP                  Virtual Internet Service Providers 
VJ HEADER             Van Jacobsen HEADer 
VL                    Value Line
VLA                   Variable Length Array
VLAN                  Virtual Local Area Network  
VL-BUS                Vesa Local-Bus 
VLB                   Vesa Local Bus
VLD                   Variable-Length Decoder
VLF                   Very Low Frequency
VLINK                 Visited LINK
VLIW                  Very Large Instruction Word
VLM                   Virtual Loadable Module
VLSI                  Very Large-Scale Integration 
VLSIPS                Very Large Scale Immobilized Polymer Synthesis
VLSM                  Variable Length Subnet Mask
VLT                   Variable List Table
VM                    1) Virtual Machine 
                      2) Virtual Memory
VM/CMS                Virtual Machine/Conversational Monitor System
VMA                   Virtual Memory Address
VMB                   Virtual Machine Boot
VME                   1) Versa Module Eurocar
                      2) Virtual Memory Environment
VMI                   Video Module Interface
VML                   Vector Markup Language           
VMM                   1) Virtual Memory Manager
                      2) Virtual Memory Management
                      3) Virtual Machine Manager
VMOS                  Vertical MOS
VMP                   Virtual Modem Protocol
VMS                   1) Virtual Memory System 
                      2) Voice Message System
                      3) Virtual Machine Storage
VMT                   Virtual Memory Technique
VNA                   Virtual Network Architecture
VNOS                  Visual Network Operating System
VOC                   creative VOiCe 
VOD                   Video On Demand
VOFR                  Voice Over Frame Relay  
VOIC                  VOice Interface Card 
VOIP                  Voice Over Internet Protocol
VOL                   Volume
VOM                   Volt-Ohm-Milliammeter
VOR                   Visions Of Reality
VOS                   1) Voice Operating System
                      2) Verbal Operating System
VP                    1) Value Point        
                      2) Virtual Path
VPC                   Virtual Path Connection 
VPCI                  Virtual Path Connection Identifier    
VPD                   1) Virtual Printer Device 
                      2) Vital Product Data 
VPDN                  Virtual Private Data Network
VPDS                  Virtual Private Data Service 
VPE                   1) Video Port Extensions
                      2) Visual Programming Environment
VPI                   Virtual Path Identifier
VPL                   Virtual Programming Language
VPM                   Video Port Manager
VPN                   1) Virtual Private Network
                      2) Virtual Page Number 
VPS                   Voice Processing System
VPSC                  Vault, Process, Structure, Configuration
VPT                   Virtual Print Technology 
VR                    1) Virtual Reality
                      2) Voltage Regulated
                      3) Voltage Regulator
VRAM                  1) Volatile Random Access Memory 
                      2) Video Random Access Memory
VRD                   Virtual Retinal Display
VRE                   Voltage Regulated Extended
VRM                   1) Vendor Relationship Management
                      2) Voltage Regulator Module
VRML                  1) Virtual Reality Modeling Language  
                      2) Virtual Reality Markup Language
VROOMM                Virtual Real-time Object Oriented Memory Manager 
VRRP                  Virtual Router Redundancy Protocol
VRT                   Voltage Regulation Technology
VRU                   Voice Response Unit
VS                    Virtual Storage
VSAM                  1) Virtual Storage Access Method
                      2) Video Surveillance and Monitoring
VSAT                  Very Small Aperture Terminal
VSE                   Virtual Storage Extended
VSF                   Vertical Scanning Frequency
VSI                   1) Virtual Socket Interface
                      2) Virtual Switch Interface
VSIO                  Virtual Serial Input Output
VSM                   1) Virtual Shared Memory
                      2) Visual System Management 
                      3) Virtual Storage Management
VSN                   Volume Serial Number
VSOS                  Virtual Storage Operating System
VSYNC                 Vertical SYNC
VT                    Vertical Tab
VTAM                  Virtual Telecommunications Access Method
VTN                   Virtual Telephony Network 
VTNS                  Virtual Telecommunications Network Service
VTS                   Volume Tracking Driver
VTSP                  Voice Telephony Service Provider 
VUI                   Video User Interface
VUP                   Vax Unit of Performance
VWB                   Visual WorkBench 
VWM                   Virtual Window Manager
VXD                   Virtual eXtended memory Driver
VxD                   Virtual extended Driver 
VXI                   Vmebus eXtension for Instrumentation
VXML                  Voice eXtensible Markup Language



*W*
W2K                   microsoft Windows 2000
WACK                  Wait before transmit, a positive ACKnowledgement
WAIS                  Wide Area Information Service
WAN                   Wide Area Network
WAP                   Wireless Application Protocol
WAV                   WAVeform audio file
WCDMA                 Wideband Code Division Multiple Access
WD                    1) Working Draft
                      2) Western Digital
WDM                   1) Windows Driver Model
                      2) Wavelength Division Multiplexing
WEP                   1) Wired Equivalent Privacy
                      2) Wireless Encription Protocol
WFL                   Work Flow Language
WfW                   Windows for Workgroup
WfWG                  Windows for WorkGroup
WHQL                  Windows Hardware Quality Labs
Wi-Fi                 WIreless FIdelity
WIM                   Wap Identification Module
WIMP                  Windows-Icons-Mouse-Pull down-pop up menus
WIN                   1) WINdows
                      2) Wireless In-building Network
WINE                  WINdows Emulator
Win2k                 microsoft Windows 2000
WINS                  Windows Internet Name Service
Winsock               Windows socket
WISE                  Wang Inter-System Exchange
WLAN                  Wireless Local Area Network
WMF                   Windows MetaFile
WML                   Wireless Markup Language
WOL                   1) Wake On Lan
                      2) WOLfram research, inc.
WOM                   zero voltage Wake On Modem
WOR                   1) Wake On Ring
                      2) Wake up On Ring
WORM                  Write Once Read Many
WOSA                  Windows Open Services Architecture
WOW                   Windows On Windows
WP                    1) WordPerfect
                      2) Word Processing
WPA                   1) Wi-fi Protected Access 
                      2) Wireless Protected Access
WPD                   Windows Printer Description
WPG                   WordPerfect Graphic
WPM                   1) Windows Presentation Manager
                      2) Word Per Minute
WPMA                  Windows & Presentation Manager Association
WPS                   Word Processing System
WRAM                  Window Random Access Memory
WS                    WordStar
WT                    Windows Telephone
WTP                   1) Wireless Transaction Protocol
                      2) Wireless Transfer Protocol
WUGNET                national Windows User Group NETwork
WUGOF                 Windows User Group Of Finland
WWAN                  Wireless Wide Area Network
WWIS                  World Wide Information System
WWN                   World Wide Name
WWRE                  World Wide Retail Exchange
WWW                   World Wide Web
WYGISWYPF             What You Get Is What You Pay For
WYSIAYG               What You See Is All You Get
WYSIWYG               What You See Is What You Get
WYSIWYN               What You See Is What You Need
WYSIWYP               What You See Is What You Print




*X*
X2B                   heXadecimal to Binary 
X2C                   heXadecimal to Character 
X2D                   heXadecimal to Decimal
XA                    1) eXtended Architecture
                      2) eXtended Attribute
XAML                  eXtensible Authority Markup Language
XAPIA                 X.400 Application Program Interface Association
XBA                   Xtreme Bandwidth Architecture
XCHG                  eXCHanGe
XCMD                  eXternal CoMmanD
XCON                  eXpert CONfigurer (of vax)
XCOPY                 eXtended COPY
XDF                   eXtended Density Format 
XDMP                  X Desktop Manager Control Protocol
XDR                   1) eXternal Data pResentation
                      2) eXtended Data Representation
                      3) eXternal Data Representation
                      4) Xml Data Reduced 
XFCN                  eXternal FunCtioN
XFDL                  eXtensible Forms Description Language
XFS                   eXtensions for Financial Services
XGA                   eXtended Graphics Array
XHTML                 eXtensible HyperText Markup Language
XID                   1) eXchange IDentification
                      2) eXchange IDentifier
XIOS                  eXtended Input/Output System
XIP                   eXecute In Place
XLF                   eXceptionaL Fortran
XLL                   eXtensible Link Language
XLM                   eXceL Macro language 
XMCP                  X Display Manager Control Protocol
XML                   eXtensible Markup Language
XMM                   eXtended Memory Manager
XMP                   X/open Management Protocol
XMS                   eXtended Memory Specification 
XNS                   1) Xerox Network Services 
                      2) Xerox Network System
X-OFF                 eXchange OFF 
X-ON                  eXchange ON
XOR                   eXclusive OR
XOT                   X.25 Over Tcp-ip
XP                    eXtreme Performance
XPG3                  X/open Portability Guide issue 3
XPRM                  Xerox Print Resources Manager 
XRNS                  eXtensible Resource Name System
XRT                   eXtensions for Real-Time
XSL                   1) eXtensible Stylesheet Language
                      2) eXtensible Style Language  
XSMD                  eXtended Storage Module Drive 
XSSI                  eXtended Server Side Includes
XT                    eXtended Technology
XTCLK                 eXternal Transmit CLoCk
XTP                   eXpress Transport Protocol 
XUL                   eXtensible User-interface Language 
XVGA                  eXtended Video Graphics Array 



*Y*
Y/N                   Yes/No
Y2K                   Year 2000
YABA                  Yet Another Bloody Acronym
YAFIYGI               You Asked For It, You Got It 
YAHOO                 Yet Another Hierarchically Officious Oracle
YAM                   Yet Another Modem 
YDV                   Yleinen DataVerkko
YES/MVS               Yorktown Expert System for Multiple Virtual Storage
YKM                   YhteisKanavaMerkinanto
YKMV                  YhteisKanavaMerkinantoVerkko
YP                    Yellow Pages
YPV                   Yleinen PuhelinVerkko
YSM                   Yourdon Structured Method
YTD                   Year To Date



*Z*
Z-CAV                 1) Zone Constant Angular Velocity
                      2) Zoned Constant Angular Velocity
ZAK                   Zero Administration Kit
ZAW                   Zero Administration for Windows
ZBR                   1) Zoned Bit Recording
                      2) Zone-Bit Recording
ZDL                   Zero Delay Lockout
ZDS                   Zenith Data Systems
ZIF                   Zero Insertion Force
ZIP                   1) Zone Information Protocol
                      2) Zigzag In-line Package
ZPV                   Zoomed Port Video
ZSL                   Zero Slot Lan
ZZF                   Zentralamt für Zulassungen im Fernmedeldewesen



Verkkotunnukset (kansalliset ja geneeriset juuret) (Top Level Domains)
lisätietoja ja ajanmukaisia listauksia:
ISO 3166
Country Codes in ISO 3166
Viestintävirasto - fi-verkkotunnusjärjestelmä


AD                    Andorra
AE                    United Arab Emirates
AF                    Afghanistan
AG                    Antigua and Barbuda
AI                    Anguilla
AL                    Albania
AM                    Armenia
AN                    Netherlands Antilles
AO                    Angola
AQ                    Antarctica
AR                    Argentina
AS                    American Samoa
AT                    Austria
AU                    Australia
AW                    Aruba
AZ                    Azerbaijan
BA                    Bosnia and Herzegovina
BB                    Barbados
BD                    Bangladesh
BE                    Belgium
BF                    Burkina Faso
BG                    Bulgaria
BH                    Bahrain
BI                    Burundi
BJ                    Benin
BM                    Bermuda
BN                    Brunei Darussalam
BO                    Bolivia
BR                    Brazil
BS                    Bahamas
BT                    Bhutan
BV                    Bouvet Island
BW                    Botswana
BY                    Belarus
BZ                    Belize
CA                    Canada
CC                    Cocos (Keeling) Islands
CF                    Central African Republic
CG                    Congo
CH                    Switzerland
CI                    Cote D'Ivoire (Ivory Coast)
CK                    Cook Islands
CL                    Chile
CM                    Cameroon
CN                    China
CO                    Colombia
CR                    Costa Rica
CS                    Czechoslovakia (former)
CU                    Cuba
CV                    Cape Verde
CX                    Christmas Island
CY                    Cyprus
CZ                    Czech Republic
DE                    Germany
DJ                    Djibouti
DK                    Denmark
DM                    Dominica
DO                    Dominican Republic
DZ                    Algeria
EC                    Ecuador
EE                    Estonia
EG                    Egypt
EH                    Western Sahara
ER                    Eritrea
ES                    Spain
ET                    Ethiopia
FI                    Finland
FJ                    Fiji
FK                    Falkland Islands (Malvinas)
FM                    Micronesia
FO                    Faroe Islands
FR                    France
FX                    France, Metropolitan
GA                    Gabon
GB                    Great Britain (UK)
GD                    Grenada
GE                    Georgia
GF                    French Guiana
GH                    Ghana
GI                    Gibraltar
GL                    Greenland
GM                    Gambia
GN                    Guinea
GP                    Guadeloupe
GQ                    Equatorial Guinea
GR                    Greece
GS                    S. Georgia and S. Sandwich Isls.
GT                    Guatemala
GU                    Guam
GW                    Guinea-Bissau
GY                    Guyana
HK                    Hong Kong
HM                    Heard and McDonald Islands
HN                    Honduras
HR                    Croatia (Hrvatska)
HT                    Haiti
HU                    Hungary
ID                    Indonesia
IE                    Ireland
IL                    Israel
IN                    India
IO                    British Indian Ocean Territory
IQ                    Iraq
IR                    Iran
IS                    Iceland
IT                    Italy
JM                    Jamaica
JO                    Jordan
JP                    Japan
KE                    Kenya
KG                    Kyrgyzstan
KH                    Cambodia
KI                    Kiribati
KM                    Comoros
KN                    Saint Kitts and Nevis
KP                    Korea (North)
KR                    Korea (South)
KW                    Kuwait
KY                    Cayman Islands
KZ                    Kazakhstan
LA                    Laos
LB                    Lebanon
LC                    Saint Lucia
LI                    Liechtenstein
LK                    Sri Lanka
LR                    Liberia
LS                    Lesotho
LT                    Lithuania
LU                    Luxembourg
LV                    Latvia
LY                    Libya
MA                    Morocco
MC                    Monaco
MD                    Moldova
MG                    Madagascar
MH                    Marshall Islands
MK                    Macedonia
ML                    Mali
MM                    Myanmar
MN                    Mongolia
MO                    Macau
MP                    Northern Mariana Islands
MQ                    Martinique
MR                    Mauritania
MS                    Montserrat
MT                    Malta
MU                    Mauritius
MV                    Maldives
MW                    Malawi
MX                    Mexico
MY                    Malaysia
MZ                    Mozambique
NA                    Namibia
NC                    New Caledonia
NE                    Niger
NF                    Norfolk Island
NG                    Nigeria
NI                    Nicaragua
NL                    Netherlands
NO                    Norway
NP                    Nepal
NR                    Nauru
NT                    Neutral Zone
NU                    Niue
NZ                    New Zealand (Aotearoa)
OM                    Oman
PA                    Panama
PE                    Peru
PF                    French Polynesia
PG                    Papua New Guinea
PH                    Philippines
PK                    Pakistan
PL                    Poland
PM                    St. Pierre and Miquelon
PN                    Pitcairn
PR                    Puerto Rico
PT                    Portugal
PW                    Palau
PY                    Paraguay
QA                    Qatar
RE                    Reunion
RO                    Romania
RU                    Russia
RW                    Rwanda
SA                    Saudi Arabia
Sb                    Solomon Islands
SC                    Seychelles
SD                    Sudan
SE                    Sweden
SG                    Singapore
SH                    St. Helena
SI                    Slovenia
SJ                    Svalbard and Jan Mayen Islands
SK                    Slovak Republic
SL                    Sierra Leone
SM                    San Marino
SN                    Senegal
SO                    Somalia
SR                    Suriname
ST                    Sao Tome and Principe
SU                    USSR (former)
SV                    El Salvador
SY                    Syria
SZ                    Swaziland
TC                    Turks and Caicos Islands
TD                    Chad
TF                    French Southern Territories
TG                    Togo
TH                    Thailand
TJ                    Tajikistan
TK                    Tokelau
TM                    Turkmenistan
TN                    Tunisia
TO                    Tonga
TP                    East Timor
TR                    Turkey
TT                    Trinidad and Tobago
TV                    Tuvalu
TW                    Taiwan
TZ                    Tanzania
UA                    Ukraine
UG                    Uganda
UK                    United Kingdom
UM                    US Minor Outlying Islands
US                    United States
UY                    Uruguay
UZ                    Uzbekistan
VA                    Vatican City State (Holy See)
VC                    Saint Vincent and the Grenadines
VE                    Venezuela
VG                    Virgin Islands (British)
VI                    Virgin Islands (U.S.)
VN                    Viet Nam
VU                    Vanuatu
WF                    Wallis and Futuna Islands
WS                    Samoa
YE                    Yemen
YT                    Mayotte
YU                    Yugoslavia
ZA                    South Africa
ZM                    Zambia
ZR                    Zaire
ZW                    Zimbabwe
COM                   US Commercial
EDU                   US Educational
GOV                   US Government
INT                   International
MIL                   US Military
NET                   Network
ORG                   Non-Profit Organization
ARPA                  Arpanet
NATO                  Nato field



Tietotekniikan mittayksiköt



bitti, (b) (bit)          = 0 tai 1
tavu, (B) (byte)          = 8 bittiä
sana, (word)              = 8 - 64 bittiä
longword                  = 32 - 64 bittiä
kilotavu, (KB) (KiloByte) = 1024 tavua
megatavu, (MB) (MegaByte) = 1024 KB  = 1024*1024 tavua
gigatavu, (GB) (GigaByte) = 1024 MB  = 1024*1024*1024 tavua
teratavu, (TB) (TeraByte) = 1024 GB  = 1024*1024*1024*1024 tavua (~miljoona tavua)
petatavu, (PB) (PetaByte) = 1024 TB  = 1024*1024*1024*1024*1024 tavua
eksatavu, (EB) (EksaByte) = 1024 PB  = 1024*1024*1024*1024*1024*1024 tavua (~miljardi gigatavua)

Huomionarvoinen seikka on tietotekniikan kilon ero SI-järjestelmän kiloon:
1 k = 1000, mutta 1 K = 1024

Kuriositeettina voisi lisäksi mainita teratavun vastaavan noin miljoonaan kirjan tekstisisältöä.
Petatavun on taasen sanottu vastaavan 320 miljardia kirjansivua.


IEC-standardin mukaiset tietoteknikkan mittayksiköt (binääriset etuliitteet)

 (Amendment 2 to IEC International Standard IEC 60027-2: Letter symbols to be used in electrical technology - Part 2: Telecommunications and electronics)
 (IEC 60027-2, Second edition, 2000-11, Letter symbols to be used in electrical technology - Part 2: Telecommunications and electronics)

kibi- Ki- 2^10 = 1 024 
mebi- Mi- 2^20 = 1 048 576 
gibi- Gi- 2^30 = 1 073 741 824 
tebi- Ti- 2^40 = 1 099 511 627 776 
pebi- Pi- 2^50 = 1 125 899 906 842 624 
exbi- Ei- 2^60 = 1 152 921 504 606 846 976 


IEC-standardin ja SI-järjestelmän kerrannaisyksiköiden vertailu

 (huom. Ole tarkkana ettet sekoita tässä kohdassa esitettyä megatavua (käytännön) tietotekniikan megatavun kanssa (1 k = 1000 mutta 1 K = 1024, ks. tarkemmin edellä).)
 (huom. Lisäsekaannusten välttämiseksi allaoleva esitys on alkuperäiskielellä.)
 
2^10 =(2^10)^1  kibi Ki kilobinary:  kilo: (10^3)^1 
2^20 =(2^10)^2  mebi Mi megabinary:  mega: (10^3)^2 
2^30 =(2^10)^3  gibi Gi gigabinary:  giga: (10^3)^3 
2^40 =(2^10)^4  tebi Ti terabinary:  tera: (10^3)^4 
2^50 =(2^10)^5  pebi Pi petabinary:  peta: (10^3)^5 
2^60 =(2^10)^6  exbi Ei exabinary:   exa:  (10^3)^6 

1 kibibit   1 Kibit = 210 bit = 1024 bit 
1 kilobit   1 kbit  = 103 bit = 1000 bit 
1 mebibyte  1 MiB   = 220 B   = 1 048 576 B 
1 megabyte  1 MB    = 106 B   = 1 000 000 B 
1 gibibyte  1 GiB   = 230 B   = 1 073 741 824 B 
1 gigabyte  1 GB    = 109 B   = 1 000 000 000 B 


SI-järjestelmän kerrannaisyksiköiden etuliitteet

 (huom. Lukusanat eroavat maakohtaisesti.
        Esim. Suomessa biljoona tarkoittaa miljoonaa miljoonaa, mutta Yhdysvalloissa vain tuhatta miljoonaa.)

jotta, Y, kvadriljoona           10^24    = 1 000 000 000 000 000 000 000 000
tsetta, Z, 1000 triljoonaa       10^21    = 1 000 000 000 000 000 000 000
eksa, E, triljoona               10^18    = 1 000 000 000 000 000 000
peta, P, 1000 biljoonaa          10^15    = 1 000 000 000 000 000
tera, T, biljoona                10^12    = 1 000 000 000 000
giga, G, miljardi                10^9     = 1 000 000 000
mega, M, miljoona                10^6     = 1 000 000
(myria, my, 10 tuhatta           10^4     = 10 000)
kilo, k, tuhat                   10^3     = 1 000
hehto, h, sata                   10^2     = 1 00
deka, da, kymmenen               10^1     = 10
desi, d, kymmenesosa             10^(-1)  = 0,1
sentti, c, sadasosa              10^(-2)  = 0,01
milli, m, tuhannesosa            10^(-3)  = 0,001
mikro, µ, miljoonasosa           10^(-6)  = 0,000 001
nano, n, miljardisosa            10^(-9)  = 0,000 000 001
piko, p, biljoonasosa            10^(-12) = 0,000 000 000 001
femto, f, tuhannesbiljoonasosa   10^(-15) = 0,000 000 000 000 001
atto, a, triljoonasosa           10^(-18) = 0,000 000 000 000 000 001
tsepto, z, tuhannestriljoonasosa 10^(-21) = 0,000 000 000 000 000 000 001
jokto, y, kvadriljoonasosa       10^(-24) = 0,000 000 000 000 000 000 000 001

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Tuomas Lehtinen
http://www.iki.fi/lehtinen