| Free On-line Dictionary of Computing | Acknowledgements | Missing definition |
| ! | !!!Batch | " |
| # | $ | $1 |
| $tonePits | % | & |
| $ | ' | 'Snooze |
| ( | (()) | () |
| (c) | (TM) | ) |
| * | *brainfuck | *LISP |
| *MOD | *w | + |
| ++ | , | - |
| -- | --C-=C-C-- | -oid |
| -ware | .) | .box |
| .com | .cshrc | .env |
| .Gertrude | .git/config | .login |
| .mailrc | .mOdMoDwOrM | .NET |
| .NET framework | .newsrc | .plan |
| .twmrc | / | /actuator/health |
| /client/get_targets | /dev/null | 0 |
| 0/1 knapsack problem | 1 | 100BaseFX |
| 100BaseT | 100BaseTX | 100BaseVG |
| 100VG-AnyLAN | 10base2 | 10base5 |
| 10baseT | 120 reset | 1-2-3 |
| 1394 | 1541 | 1581 |
| 16000 | 16450 | 16550 |
| 16550A | 16650 | 16750C |
| 16 bit | 16-bit application | 16C550 |
| 16C750 | 16C850 | 1802 |
| 192.168.1.1 | 1NF | 1TBS |
| 1.TR.6 | 2 | 20-GATE |
| 2780 | 2B1D | 2B1Q |
| 2B+D | 2NF | 2.PAK |
| 32000 | 3270 | 32-bit application |
| 3780 | 386 | 386BSD |
| 386SPART.PAR | 386SX | 3Com Corporation |
| 3DNow! | 3DNow! Professional | 3DO |
| 3GL | 3NF | 3Station |
| 3-tier | 404 | 4.2BSD |
| 431A | 4.3BSD | 4510 |
| 473L Query | 486 | 486DX |
| 486SX | 4GL | 4NF |
| 51forth | 56 kbps | 56k line |
| 586 | 5ESS | 5NF |
| 5th Glove | 6.001 | 610 |
| 6309 | 64-bit | 6501 |
| 6502 | 650x | 6510 |
| 6526 | 65816 | 6800 |
| 68000 | 68020 | 68030 |
| 68040 | 68050 | 68060 |
| 6809 | 680x0 | 686 |
| 68HC11 | 68LC040 | 6to4 |
| 6x86 | 754 | 80186 |
| 80188 | 80/20 rule | 802.1 |
| 802.11a | 802.11b | 802.11g |
| 802.2 | 802.3 | 80286 |
| 8031 | 80386 | 8048 |
| 80486 | 8051 | 8052 |
| 8080 | 8086 | 8088 |
| 80x86 | 822 | 82430FX |
| 82430HX | 82430MX | 82430VX |
| 8250 | 8.3 | 8450 |
| 8514 | 8514-A | 88000 |
| 88open | 8-bit clean | 8N1 |
| 8 queens problem | 8 queens puzzle | 8x86 |
| 90-90 Rule | 9PAC | :-) |
| ; | < | <g> |
| <gr&d> | = | > |
| ? | ?? | @ |
| @-party | @Begin | @stake |
| @XX | [incr Tcl] | \ |
| \begin | \big | \BV |
| \perp | \sqcap | \sqcup |
| \sqsubseteq | \subseteq | \t |
| \uparrow | \{@} | ^ |
| A# | A-0 | a1 |
| A1 security | A20 handler | A-3 |
| A3D | A4C | a56 |
| AAB8 | AAC | AADL |
| AAL | AAP | AAP DTD |
| aard | AARP | AARP probe packets |
| AAUI | A&B | abbrev |
| Abbreviated Test Language for Avionics Systems | ABC | ABC ALGOL |
| ABCL/1 | ABCL/c+ | ABCL/R |
| ABCL/R2 | abduction | ABEND |
| AberMUD | ABI | ABLE |
| ABM | ABNF | abort |
| ABP | ABR | abscissa |
| ABSET | absolute path | absolute pathname |
| abstract | abstract class | abstract data type |
| abstract interpretation | abstraction | abstract machine |
| Abstract Machine Notation | abstract syntax | Abstract Syntax Notation 1 |
| abstract syntax tree | Abstract-Type and Scheme-Definition Language | Abstract Windowing Toolkit |
| Abstract Window Toolkit | ABSYS | AC2 |
| AC3 | ACA | ACAP |
| Accelerated Graphics Port | accelerator | Accent |
| accept | Acceptable Use Policy | acceptance testing |
| Acceptance, Test Or Launch Language | acceptor | Access |
| Access Control List | access method | access permission |
| access point | access time | ACCLAIM |
| Accounting File | accounting management | Account Representative |
| ACCU | accumulator | accuracy |
| ACE | ACF | ACF/NCP |
| ACIA | ACID | ACIS |
| ACK | ACL | ACM |
| ACME | ACOM | acorn |
| Acorn Archimedes | Acorn Computer Group | Acorn Computers Ltd. |
| Acorn Online Media | Acorn RISC Machine | A Coroutine Language |
| ACOS | acoustic coupler | ACP |
| ACPI | Acrobat | acronym |
| ACSE | ACT | ACT++ |
| Act1 | ACT 1 | Act2 |
| Act3 | Actalk | Actis |
| activation record | active DBMS | Active Directory |
| Active Language I | active matrix display | Active Measurement Project |
| Active Monitor | active object | Active Reconfiguring Message |
| active record pattern | Active Server Pages | ActiveX |
| ActiveX Data Objects | ACT ONE | Actor |
| actor | Actors | actor/singer/waiter/webmaster |
| Actra | actual argument | actuator/health |
| Actus | AD | ad |
| Ada | Ada++ | Ada 83 |
| Ada 95 | Ada 9X | ADABAS |
| Ada Core Technologies | Ada/Ed | Adaline |
| Ada Lovelace | ADAM | Adam7 |
| Adamakegen | ADAMO | Adam Osborne |
| Ada-O | Adaplan | Adaplex |
| Ada Programming Support Environment | ADAPT | Adaptable User Interface |
| Adaptec | adaptive answering | Adaptive Communication Environment |
| Adaptive Digital Pulse Code Modulation | adaptive learning | adaptive routing |
| Adaptive Server Enterprise | Adaptive Simulated Annealing | Adaptive TRansform Acoustic Coding |
| Adaptor | Ada Semantic Interface Specification | Ada Software Repository |
| A Data Management System | ADC | ADCCP |
| A/D converter | ADCU | AD/Cycle |
| ADD 1 TO COBOL GIVING COBOL | ADDD | additive |
| address | address book | address bus |
| addressed call mode | addressee | addressing mode |
| address mask | address resolution | Address Resolution Protocol |
| address space | Address Strobe | ADELE |
| ADES | ad-hockery | ad-hoc polymorphism |
| Aditi | adjacency | adjacent |
| ADL | AdLog | ADM |
| ADMD | admin | Administration Management Domain |
| administrative distance | Administrative Domain | admissible |
| ADO | Adobe Systems, Inc. | Adobe Type Manager |
| ADPCM | ADR | ADS |
| ADSL | ADSP | ADSU |
| ADT | Advanced Audio Coding | Advanced Communication Function/Network Control Program |
| Advanced Communications Function | Advanced Computing Environment | Advanced Configuration and Power Interface |
| Advanced Data Communications Control Protocol | Advanced Encryption Standard | Advanced Function Presentation |
| Advanced Function Printing | Advanced Intelligent Tape | Advanced Interactive eXecutive |
| Advanced Micro Devices, Inc. | Advanced Network Systems Architecture | Advanced Peer-to-Peer Networking |
| Advanced Power Management | Advanced Programmable Interrupt Controller | Advanced Program-to-Program Communications |
| Advanced Research Projects Agency | Advanced Research Projects Agency Network | Advanced Revelation |
| Advanced RISC Computing Specification | Advanced RISC Machine | Advanced RISC Machines Ltd. |
| Advanced SCSI Peripheral Interface | Advanced Software Environment | Advanced STatistical Analysis Program |
| Advanced Technology Attachment | Advanced Technology Attachment Interface with Extensions | Advanced Video Coding |
| Advanced WavEffect | Advantage Gen | ADVENT |
| Adventure Definition Language | ADVSYS | adware |
| AE | ae | AED |
| AEGIS | Aegis | Aeolus |
| AEP | aeroplane rule | AES |
| AESOP | af | AFAC |
| AFAIK | affine transformation | affordance |
| AFIPS | AFJ | AFK |
| aflex | AFNOR | AFP |
| AFS | AFUU | ag |
| agent | aggregate type | aggregation |
| aggregator | AGL | AGM Theory for Belief Revision |
| Agner Krarup Erlang | AGORA | AGP |
| AGP graphics | A Hardware Programming Language | AHDL |
| AHPL | AI | ai |
| AIA | AI-complete | AID |
| AIDA | AIDS | AIDX |
| AIFF | AI International | Aiken code |
| AI koan | AIMACO | Aimnet |
| Aion Development System | AIR | AIr MAterial COmmand compiler |
| airplane rule | AIT | AIX |
| Ajax | AKC | AKCL |
| A. K. Erlang | AKL | AL |
| al | Aladdin Enterprises | Aladdin Systems, Inc. |
| ALADIN | ALAM | Alan F. Shugart |
| A-language | A Language Encouraging Program Hierarchy | A Language for Attributed Definitions |
| A Language with an Extensible Compiler | Alan Kay | Alan M. Turing |
| Alan Shugart | Alan Turing | ALARP |
| A-law | ALC | Alcool-90 |
| ALCOR | Aldat | ALDES |
| ALDiSP | ALEC | ALEF |
| ALEPH | Aleph | aleph 0 |
| alert | Alex | Alexis |
| ALF | Alfl | algebra |
| ALGEBRAIC | algebraic | Algebraic Compiler and Translator |
| algebraic data type | Algebraic Interpretive Dialogue | Algebraic Logic Functional language |
| Algebraic Manipulation Package | Algebraic Specification Language | algebraic structure |
| Algebra of Communicating Processes | ALGOL | ALGOL 58 |
| ALGOL 60 | ALGOL 60 Modified | ALGOL 60 Revised |
| ALGOL 68 | ALGOL 68C | ALGOL 68-R |
| ALGOL 68 Revised | ALGOL 68RS | ALGOL 68S |
| ALGOL C | ALGOL D | ALGOL N |
| ALGOL W | ALGOL X | ALGOL Y |
| algorithim | algorithm | ALgorithm DEScription |
| algorithmic art | ALgorIthmic ASsembly language | Algorithmic Language |
| Algorithmic Model | Algorithmic Processor Description Language | Algorithmic Test Case Generation |
| ALGY | ALIAS | alias |
| aliasing | aliasing bug | Alice |
| alife | A-Life | ALJABR |
| al-Khwarizmi | Allegro | all-elbows |
| ALLIANCE | Allman style | allow-none |
| ALLOY | ALM | Aloha |
| Aloha Net | Alonzo Church | ALP |
| ALPAK | ALPHA | Alpha |
| Alpha AXP 21164 | alpha/beta pruning | alphabetic language |
| alpha conversion | Alpha EV6 | Alpha Geek |
| alphanumeric | alpha particle | Alphard |
| alpha testing | ALPS | alt |
| ALTAC | Altair 8800 | Alta Vista |
| alt bit | ALTER | Alternating bit protocol |
| alternative text | altmode | ALTRAN |
| alt.sources | alt text | ALU |
| Aluminum Book | Alvey | AM |
| am | Amanda | A Manufacturing Language |
| amateur packet radio | Amber | AMBIT |
| AMBIT/G | AMBIT/L | AMBIT/S |
| AMBUSH | AMD | AMD 29000 |
| AMD 29027 | Amdahl | Amdahl Corporation |
| Amdahl's Law | AMD Am2901 | AMD Am2903 |
| AMD Am2910 | AMD K7 | American National Standard |
| American National Standards Institute | American Society of Mechanical Engineers | American Standard Code for Information Interchange |
| American Telephone and Telegraph, Inc. | American Wire Gauge | America On-Line, Inc. |
| America's Multimedia Online | AMI | Amiga |
| Amiga E | Aminet | AML |
| AML/E | AMO | Amoeba |
| AMP | amper | Ampere |
| ampersand | AMPL | AMPLE |
| Amplitude Modulation | amp off | AMPPL-II |
| AMPS | AMS | AMTRAN |
| Amulet | an | analog |
| analog computer | Analog Hardware Design Language | analogue |
| analogue computer | Analogy Model | analytical CRM |
| Analytical Engine | Analytical Machine | Analytical Solutions Forum |
| anchor | ANCP | AND |
| ANDF | Andorra-I | Andorra Kernel Language |
| Andorra-Prolog | Andrei Markov | Andrew File System |
| Andrew Fluegelman | Andrew Message System | Andrew Project |
| Andrew S. Tanenbaum | Andrew Tanenbaum | Andrew Toolkit |
| Andy Tanenbaum | An Evolutionary System for On-line Programming | Angel |
| angle bracket | Anglo-Saxon point | angry fruit salad |
| ANI | Animated GIF | animation |
| Animus | ANL | Anna |
| annealing | annotate | ANNotated Ada |
| annotation | annoybot | annoyware |
| Annual Change Traffic | annulled branch | anonymous FTP |
| ANother Tool for Language Recognition | ANR | ANS |
| ANSA | ANSI | ANSI C |
| ANSI Minimal BASIC | ANSI/SPARC | ANSI/SPARC Architecture |
| ANSI/SPARC model | ANSI X12 | ANSI Z39.50 |
| antenna gain | Anthony Hoare | anti-aliasing |
| antichain | antisymmetric | antivirus |
| antivirus program | antivirus software | ANTLR |
| ANU | ANU ML | any key |
| anytime algorithm | ao | AOCE |
| AOL | AOP | AOS |
| APA | Apache | Apache Software Foundation |
| APAL | APAREL | A PArse REquest Language |
| APC | APDL | APE |
| apE | API | APIC |
| APL | APL2 | APLGOL |
| APLWEB | APM | Apollo Computer |
| apostrophe | app | APPC |
| AppKit | APPLE | Apple |
| Apple Address Resolution Protocol | Apple Attachment Unit Interface | Apple Computer, Inc. |
| Apple II | Apple Macintosh | Apple Newton |
| Apple Open Collaboration Environment | AppleScript | Applesoft BASIC |
| applet | Appletalk | AppleTalk Data Stream Protocol |
| AppleTalk Filing Protocol | apple-touch-icon | apple-touch-icon-152x152.png |
| apple-touch-icon-152x152-precomposed.png | apple-touch-icon-precomposed | appletviewer |
| application | Application Binary Interface | Application Configuration Access Protocol |
| Application Control Architecture | Application Developer | application development |
| application enablement services | Application environment specification | Application Executive |
| Application Integration Architecture | application layer | application lifecycle management |
| Application Portability Architecture | application program | Application Program Interface |
| Application Programming Interface | Application Protocol Data Unit | Applications Development Manager |
| application server | Application Service Element | application service provider |
| applications language | application software | Application Software Installation Server |
| Application-Specific Integrated Circuit | Applications Programming Interface | applications software |
| application testing | Application Visualisation System | applicative language |
| Applicative Language for Digital Signal Processing | applicative order reduction | APPLOG |
| APPN | approximation algorithm | April Fool's Joke |
| A Programming Language | APSE | APT |
| APX III | aq | AQL |
| ar | arbitrary precision calculator | ARC |
| arc | Arcade | ArchBSD |
| archie | Archimedes | architecture |
| Architecture Neutral Distribution Format | archive | archive site |
| ARCnet | ARCS | Arctic |
| arena | ARES | AREV |
| AREXX | arg | argument |
| Argus | Ariel | ARI Service |
| ARITH-MATIC | Arithmetic and Logic Unit | arithmetic mean |
| arity | arj | Arjuna |
| ARL | ARM | ARM610 |
| ARM7 | ARM710 | ARM7500 |
| ARM8 | ARM800 | ARM Ltd |
| ARMM | armour-plated | ARP |
| ARPA | ARPANET | ARQ |
| array | array processor | Array Processor Assembly Language |
| Array Theory | arrow key | ART |
| art | Artemis microkernel | Artifex |
| artificial intelligence | Artificial Intelligence Lab | Artificial Life |
| artificial neural network | Artisoft, Inc. | Artistic license |
| ARTSPEAK | AS | as |
| as31 | AS/400 | ASA |
| asap | asbestos | asbestos cork award |
| asbestos longjohns | ascender | ASCI |
| ASCII | ASCII art | ASCIIbetical order |
| ASCIIbonics | ASCII character table | ASCII graphics |
| ASDIMPL | ASDL | ASDO IMPlementation Language |
| ASE | A* search | ASF |
| ash | Ashmedai | Ashton-Tate Corporation |
| ASIC | Asiliant Technologies | A Simulation Process-Oriented Language |
| ASIS | ASK | ASL |
| ASL+ | As Low As Reasonably Practicable | ASM |
| ASME | ASN | ASN.1 |
| ASP | ASPECT | ASpecT |
| aspect | aspect-oriented programming | aspect ratio |
| ASPEN | ASPI | ASPIK |
| Aspirin | ASPLE | ASPOL |
| ASQC | ASR | assembler |
| ASSEMBLY | assembly code | Assembly Language |
| assembly language | Assembly Language Compiler | Assembly Language for Multics |
| as sensible as a dictionary | assertion | ASSET |
| asset management | Asset Source for Software Engineering Technology | assigned numbers |
| assignment | assignment problem | Association Control Service Element |
| Association for Computational Linguistics | Association for Computing | Association for Computing Machinery |
| Association for Progressive Communications | Association for SIMULA Users | Association Française des Utilisateurs d'Unix |
| Association of American Publishers | Association of C and C++ Users | Association of Lisp Users |
| associative array | associative memory | Associative Memory Parallel Processing Language |
| associativity | AST | ASTAP |
| AST Computers, LLC | asterisk | asterix |
| Astra Digital Radio | Astral | AST Research, Inc. |
| asymmetrical modulation | Asymmetric Digital Subscriber Line | Asymmetric Digital Subscriber Loop |
| asynchronous | Asynchronous Balanced Mode | Asynchronous Communications Interface Adapter |
| asynchronous logic | Asynchronous Transfer Mode | asyncronous |
| AT | at | AT-3 |
| ATA | ATA-2 | ATA-4 |
| Atanasoff-Berry Computer | Atanasoff, John Vincent | ATAPI |
| ATA point | Atari | Atari ST |
| AT Attachment | AT Attachment Packet Interface | AT bus architecture |
| AtFS | Athena | Atherton Technology |
| Athlon | ATIS | ATK |
| ATLAS | Atlas Autocode | ATM |
| ATM Forum | ATMP | atob |
| ATOLL | atomic | A Tools Integration Standard |
| ATRAC | ATS | at sign |
| AT&T | Attachment Unit Interface | attacks as a service |
| AT&T Bell Labs | attenuation | atto- |
| attoparsec | attribute | Attributed File System |
| Attribute Translation System | ATX | au |
| aubergine | audio | audiographics |
| audiographic teleconferencing | Audio IFF | AudioOne |
| Audio Processing Technology | Audio Video Interleave | Augmented Backus-Naur Form |
| AUI | A'UM | AUP |
| Aurora | Austin Kyoto Common Lisp | authentication |
| authoring | autobaud | autobogotiphobia |
| AutoCAD | Autocode | AUTOCODER |
| autoconf | autoconfiscate | Autodesk, Inc. |
| AUTOEXEC.BAT | AUTOGRAF | AUTOGRP |
| Auto Idle | Autolisp | autoloader |
| automagically | automata | automata theory |
| Automated Engineering Design | AUTOmated GRouPing system | Automated Retroactive Minimal Moderation |
| automated testing | AUTOMATH | Automatically Programmed Tools |
| automatic baud rate detection | automatic hyphenation | Automatic Mathematical TRANslation |
| Automatic Network Routing | Automatic Number Identification | Automatic Repeat Request |
| Automatic Send Receive | Automatic Sequence Controlled Calculator | automation |
| Automatische Rechenplanfertigung | automaton | Automatrix, Inc. |
| Autonomous System | Autonomous System Number | Autopass |
| autopilot code | autoprojector | AUTO-PROMPT |
| Autostat | autostereogram | A/UX |
| auxiliary storage | av | availability |
| Avalon/C++ | Avalon/Common LISP | avatar |
| AVC | average seek time | AverStar |
| AVI | Avon | AVS |
| aw | AWE | AWG |
| awk | AWT | aXe |
| AXIOM | axiom | AXIOM* |
| Axiomatic Architecture Description Language | axiomatic semantics | axiomatic set theory |
| Axiom of Choice | Axiom of Comprehension | axiom schema |
| AXLE | ayacc | AYT |
| az | AZERTY | B |
| b | B-0 | B1FF |
| B1 security | B2B | B2 security |
| B3 security | b4 | ba |
| Baan | Babbage | Babbage, Charles |
| babbling error | BABEL | BABT |
| Baby AT | BABYLON | BACAIC |
| Bachman Diagram | Bachman Information Systems | backbone |
| backbone cabal | backbone network | backbone site |
| back door | back-end | Back End Generator |
| Back End Generator Language | background | backing store |
| back link | backoff | BackOffice |
| backplane | backport | back-propagation |
| back quote | backronym | backside cache |
| backslash | backspace | backtick |
| backtracking | backup | Backup Domain Controller |
| backup pumpkin | backup rotation | backup software |
| Backus-Naur Form | Backus Normal Form | backward analysis |
| backward chaining | backward combatability | backward compatibility |
| backward compatible | backwards compatibility | backwards compatible |
| BAD | Bad command or file name | Bad Thing |
| bag on the side | baklava code | BAL |
| balanced computing | balanced tree | BALGOL |
| BALITAC | BALM | balun |
| Banach algebra | Banach inverse mapping theorem | Banach space |
| Banach-Tarski paradox | banana label | banana phenomenon |
| banana problem | bandwidth | bang |
| bang on | bang path | banner |
| Banyan | BAP | BAPI |
| bar | Barbara Liskov | bar code |
| bare metal | barfmail | barnacle code |
| Baroque | baroque | barrel shifter |
| barycentric | base | base 64 |
| baseband | base class | baseline |
| base memory | basename | Base Technology |
| bash | BASIC | Basic Assembly Language |
| BASIC AUTOCODER | Basic COBOL | Basic Encoding Rules |
| Basic Fortran | Basic Input/Output System | Basic JOVIAL |
| Basic Language for Implementation of System Software | Basic Multilingual Plane | Basic Object Adapter |
| Basic Object System | Basic Operating System | Basic Programming Support |
| Basic Rate Interface | Basic Service Set | BASIC V |
| Bastard Operator From Hell | bastion host | batch |
| batch file | batch processing | bathtub curve |
| baud | baud barf | Baudot |
| Baudotbetical order | Baudot code | baud rate |
| bawk | bay | baz |
| bb | BBC | BBC Micro |
| BBC Microcomputer | BBC Networking Club | BBL |
| BBN Butterfly | BBN Technologies | bboard |
| BBS | BC | BCBF |
| BCC | BCD | BCL |
| BC NELIAC | BCNU | BCPL |
| BCS | bd | BDC |
| BDL | BDPA | be |
| BEA | beam | beamer |
| beam search | bean | beanie key |
| bearer channel | bear paw | Beats the shit outa me |
| Bebo | BeBOP | BeBox |
| BEDO | Bedrock | beep |
| beeper | BEG | BEGL |
| beige toaster | Be Inc | BEL |
| belief revision | BELL | Bell |
| bell | Bell 103 | Bell Communications Research, Inc |
| Bellcore | bell curve | Bell Laboratories |
| Bell Labs | bells and whistles | bells, whistles, and gongs |
| benchmark | Bend Over, Here It Comes Again | Benoit B. Mandelbrot |
| Benoit Mandelbrot | Bentley Systems, Inc. | BeOS |
| BER | Berard Object and Class Specifier | Berkeley |
| Berkeley 4.2 | Berkeley EDIF200 | Berkeley FP |
| Berkeley Internet Name Domain | Berkeley Logo | Berkeley Network |
| Berkeley Quality Software | Berkeley Software Design, Inc | Berkeley Software Distribution |
| Berkeley Softworks | Berkeley Unix | Berkeley Yacc |
| berklix | Berners-Lee, Tim | Bernoulli Box |
| Bernoulli principle | Bernstein condition | BERR |
| Bertrand | Bertrand Meyer | Bertrand Russell |
| Berzerkeley | Berzerkley | bespoke |
| best effort | best first search | best fit |
| BETA | beta | beta abstraction |
| beta conversion | Betamaxed | beta reduction |
| beta test | beta testing | beta version |
| Bezier | Bezier curve | Bezier surface |
| bf | BFI | bg |
| BGA | bgh | BGP |
| bh | BHC Code | bi |
| bib | bible | BIBOP |
| BibTeX | BiCapitalisation | BiCMOS |
| bidirectional printing | Bidouilleurs Sans Argent | bi-endian |
| BIFF | biff | Big bag of pages |
| big blue | big-endian | Big Gray Wall |
| big iron | BIG-LAN | Bigloo |
| bignum | bigot | Big Red Switch |
| Big Room | big win | bijection |
| Bill Gates | Bill Joy | binaries |
| binary | binary coded decimal | Binary Compatibility Standard |
| binary counter | binary data | binary exponential backoff |
| binary file | binary large object | binary package |
| binary prefix | binary relation | binary search |
| Binary Synchronous Transmission | binary tree | BIND |
| bindery | binding handle | binding-time analysis |
| BinHex | Binhex 4.0 | BinProlog |
| bioinformatics | BioMeDical Package | biometric device |
| biometrics | BIOR | BIOS |
| BIP | bipartite graph | BIPM |
| bipolar | bipolar transistor | BIPS |
| Bird-Meertens Formalism | Birds Of a Feather | BISDN |
| Bison | Bison++ | BIST |
| bisync | bit | bit bang |
| bit bashing | bitblt | bit bucket |
| bit decay | bit diddling | bite |
| Bit Error Rate | bit field | bitmap |
| bitmap display | bitmap font | bitmapped display |
| bit mask | BITNET | bitonal image |
| bit-paired keyboard | bit pattern | bit plane |
| bit rate | bit-robbing | bit rot |
| bit slice | bits per inch | bits per pixel |
| bits per second | bit string | bit stuffing |
| BitTorrent | bit twiddling | bitty box |
| bitwise | bitwise complement | bixie |
| biz-core stability | bj | Bjarne Stroustrup |
| BJC4000 | black art | black box |
| black-box testing | Black Data Processing Associates | black hat |
| black hole | BlackIce | black magic |
| blargh | blast | blat |
| BLAZE | BLAZE 2 | bleam |
| bleeper | bletcherous | Bletchley Park |
| Blind Carbon Copy | B-LINE | blinkenlights |
| BLISS | BLISS-10 | BLISS-11 |
| BLISS-16C | BLISS-32 | BLISS-36 |
| blit | blitter | blivet |
| bloat | bloatware | BLOB |
| block | Block And List Manipulation | Block Diagram Compiler |
| blocked records | Block Redundancy Check | Block Started by Symbol |
| block-structured | block transfer computations | blog |
| blog-driven development | Bloggs Family, the | Bloombug |
| Blosim | blow an EPROM | blow away |
| blowing your buffer | blow out | blow past |
| blow up | BLOX | BLT |
| Blue | Blue Book | Blue Box |
| blue box | blue dot syndrome | Blue Glue |
| Blue Screen of Death | Blue Screen of Life | Blue Sky Software |
| Bluetooth | blue wire | blurgle |
| bm | BMAN | BMASF |
| BMDP | B-Method | BMF |
| BMP | bmp | BMWF |
| bn | BNC | BNF |
| BNR Pascal | BNR Prolog | bo |
| BOA | boa | board |
| boat anchor | Bob | Bobo the Webmonkey |
| BOCS | Boehm B. | BOEING |
| Boeing Airplane Company Algebraic Interpreter Coding | BOFH | bogometer |
| BogoMips | bogon | bogon filter |
| bogon flux | bogosity | bogo-sort |
| bogotify | bogue out | BOHICA |
| Bohr bug | boink | BOLERO |
| Bolt, Beranek and Newman, Inc. | bomb | bon |
| bondage-and-discipline language | bonk/oif | Booch method |
| book | bookmark | Bookreader |
| book titles | Bookviewer | bool |
| Boolean | Boolean algebra | Boolean logic |
| Boolean search | Boole, George | Booster |
| boot | boot block | boot disk |
| booting | BOOTP | bootstrap |
| bootstrap loader | boot virus | Border Gateway Protocol |
| borf | Borland International, Inc. | Borland Software Corporation |
| BOS | Bose-Chaudhuri-Hocquenghem Code | BOSS |
| bot | botmaster | botnet |
| botnet herder | bottom | BottomFeeder |
| bottom feeder | bottom-unique | bottom-up implementation |
| bottom-up model | bottom-up testing | botwar |
| bounce | bounce message | boundary scan |
| boundary value | boundary value analysis | bounded |
| boundedly complete | bound variable | Bourne Again SHell |
| bournebasic | Bourne shell | boustrophedonic |
| box | boxed comments | boxen |
| Boxer | boxology | Boycott Apple |
| bozotic | BPEL | BPI |
| bpmake | bpp | BPR |
| BPS | bps | BQS |
| br | brace | bracket |
| bracket abstraction | braille | braille display |
| Braille embosser | Braille printer | Brain Aid Prolog |
| brain-damaged | brain-dead | brain dump |
| brain fart | Brainfuck | braino |
| branch | Branch and Hang | branch coverage testing |
| branch delay slot | Branch on Chip Box Full | branch prediction |
| Branch Target Buffer | branch to Fishkill | Brazil |
| BRB | breadcrumbs | breadth-first search |
| break | break-even point | breakpoint |
| break statement | breath-of-life packet | breedle |
| BRH | BRI | Brian Reid |
| BRIDGE | bridge | Bridgetalk |
| briefcase | brightness | Brilliant |
| bring X to its knees | British Broadcasting Corporation | British Library Method |
| British Standards Institute | British Telecom | British Telecom Research Laboratories |
| brittle | broadband | broadcast |
| broadcast quality video | broadcast storm | Broadway |
| brochureware | broken | broken arrow |
| Broken As Designed | broker | broket |
| brontobyte | Brooks's Law | brouter |
| Brouwer Fixed-Point Theorem | Brown and Sharpe Wire Gauge | brown paper bag bug |
| browser | browserconfig.xml | BRS |
| BRUIN | brute force | brute force and ignorance |
| brute force attack | BS | bs |
| BS2000 | BSA | BSD |
| BSD386 | BSDI | BSD/OS |
| BSD Unix | BSI | BSL |
| BSOD | BSOL | BSOM |
| BSP method | BSRAM | BSS |
| BSS segment | BST | bt |
| BTB | btoa | B-Toolkit |
| BTOS | B-tree | BTRIEVE |
| BTRIEVE Technologies, Inc. | BTRL | BTS |
| BTW | BUAF | BUAG |
| bubble memory | bubble sort | bucky bits |
| buffer | buffered write-through | buffer overflow |
| buffer overrun | bug | bug-compatible |
| bug fix | bug fix release | Bugfoot |
| bug-for-bug compatible | buglix | bugs |
| BUGSYS | bug tracking system | Bugzilla |
| build | built-in | Built-in Self Test |
| Bull | bulletin board | bulletin board system |
| bullet-proof | bullet-proof hosting | Bull Information Systems |
| bum | bump | bundle.js |
| burble | Bureau International des Poids et Mesures | Burge's Language |
| buried treasure | burn-in | burn-in period |
| Burroughs Corporation | Burst EDO | Burst Extended Data Out DRAM |
| burst page | Burst Static Random Access Memory | bus |
| bus error | Bush, Vannevar | Business Analyst |
| Business Application Programming Interface | Business Process Re-engineering | Business Software Alliance |
| Business Systems Analyst | business to business | bus master |
| bus mastering | bus network | bus topology |
| Busy Beaver | busy-loop | busy-wait |
| Butterfly Common LISP | Butterfly Scheme | button |
| buzz | bv | bw |
| bwBASIC | BWQ | by |
| byacc | by hand | Byte |
| byte | byte-code | byte-code compiler |
| byte-code interpreter | byte compiler | bytesexual |
| Byzantine | bz | bzzzt, wrong |
| C | C# | C* |
| C++ | C+- | C+@ |
| C-10 | C1 security | c2man |
| C2 security | c386 | C5 |
| C64 | c68 | CA |
| ca | cable modem | cache |
| cache block | cache coherency | cache conflict |
| cache consistency | cache hit | cache line |
| cache memory | cache miss | Cache On A STick |
| caching | CACI | CACM |
| CAD | CAD/CAM | CADD |
| Cadence Design Systems | CADET | CADRE |
| CAE | CAF | CAFE |
| CAGE | CAI | Cairo |
| CAIS | CAIS-A | CAiSE |
| CAJOLE | CAL | Calc |
| calculator | Calculus of Communicating Systems | Calendar API |
| Calendar Application Programming Interface | Caliban | Calico |
| California State University San Marcos | callback | call-by-name |
| call-by-need | call-by-reference | call-by-value |
| call-by-value-result | call/cc | Call Data Record |
| callee | Caller ID | calling convention |
| Call-Level Interface | Call Unix | Callware |
| call-with-current-continuation | CALS | Caltech Intermediate Form |
| CAM | CAM-6 | CAMAL |
| Cambridge Lisp | CamelCase | Camelot Library |
| camera ready | CAMIL | CAML |
| Caml Light | CAM-PC | Campus Wide Information System |
| CAN | Canada | Cancel |
| Cancelbunny | Cancelm00se | Cancelmoose |
| Cancelpoodle | candidate key | Candle |
| candygrammar | canonical | Canonical Encoding Rules |
| canonical name | canonicity | C (ANSI) |
| can't happen | Cantor | CAP |
| Capabilities Maturity Model | capability | Capability Maturity Model |
| capacitor | capacity | CAPI |
| Cap'n Crunch | Captain Abstraction | Captain Crunch |
| CAPTCHA | car | card |
| Cardbox for Windows | Cardbus | card creep |
| cardinality | cardinal number | CARDS |
| card walloper | Career Limiting Move | caret |
| careware | cargo cult programming | Caribou CodeWorks |
| Carl Friedrich Gauss | Carnegie Mellon University | carpal tunnel syndrome |
| carriage return | Carrierless Amplitude/Phase Modulation | carrier scanner |
| carrier signal | Cartesian coordinates | Cartesian product |
| CAS | CAS 8051 Assembler | cascade |
| Cascading Style Sheets | CASE | case |
| case and paste | case based reasoning | CASE Data Interchange Format |
| CASE framework | case insensitive | Case Integration Services |
| CASE*Method | case sensitive | case sensitivity |
| CASE SOAP III | case statement | CASE tools |
| cashe | CAST | cast |
| casters-up mode | casting the runes | CAT |
| cat | Cat 3 | Cat 5 |
| catatonic | CATE | Categorical Abstract Machine Language |
| category | Category 3 | Category 5 |
| CA-Telon | cathode ray tube | CATIA |
| cationic cocktail | C/ATLAS | CATNIP |
| CATO | Cauchy sequence | cause-effect graphing |
| CAV | Cayenne Software, Inc. | CAYLEY |
| cb | CBASIC | CBBS |
| C-BC | CBD | C Beautifier |
| CBIR | CBN | CBR |
| CBT | CBV | CBVIR |
| cbw | cc | CC++ |
| C/C++ | CCalc | CCD |
| CCIRN | CCITT | CCITT HIgh-Level Language |
| CCL | CCLU | ccmail |
| cc:mail | CCP | CCR |
| CCS | CCSP | CCTA |
| CD | cd | CDA |
| CD burner | CDC | CDC 6600 |
| CDDI | CDD/Plus | CDE |
| CDF | CD-i | CDIF |
| CDL | CDM | CDMA |
| CDP1802 | CDPD | CDR |
| cdr | CD-Read-Write | CD-Rewritable |
| CD-ROM | CD-ROM drive | CD-RW |
| CDS | cd tilde | CDW |
| CE | Cecil | Cedar |
| CEEMAC+ | CEI-PACT | Celeron |
| CELIP | cell | Cellang |
| CELLAS | Cello | cell reference |
| CELLSIM | CEll Space Simulation Language | Cellular |
| cellular automata | cellular automaton | Cellular Digital Packet Data |
| cellular multiprocessing | Cellular Neural Network | CELP |
| CEN | CENELEC | centi-call second |
| central office | Central office exchange service | central processing unit |
| Centrex | Centronics | Centrum voor Wiskunde en Informatica |
| centum call second | century meltdown | CEN/XFS |
| cepstra | cepstrum | CEPT |
| CER | Ceramic Pin Grid Array | Ceres workstation Oberon System |
| Cerf, Vint | CERN | CERNLIB |
| CERT | Certificate Authority | CESP |
| CESSL | cextract | cf |
| CFD | CFG | CFML |
| cforth | cfortran.h | CFP |
| CFP92 | cg | CGA |
| CGGL | CGI | cgi-bin |
| CGI Joe | CGI program | CGI script |
| CGM | CGOL | cgram |
| Ch | ch | chad |
| chad box | Chadless keypunch | chain |
| Challenge-Handshake Authentication Protocol | Chalmers University of Technology | change management |
| changeover | channel | channel associated signaling |
| channel hopping | channel op | channel service unit |
| channel service unit/data service unit | chan op | chaos |
| CHAP | char | character |
| character encoding | character encoding scheme | character graphics |
| characteristic function | character key | character repertoire |
| character set | character set identifier | charge-coupled device |
| CHARITY | charityware | Charles Babbage |
| Charles Bachman | Charles Simonyi | CHARM |
| CHARM++ | Charme | CHARYBDIS |
| chase pointers | CHASM | chat |
| chatbot | chat room | chatterbot |
| CHeap ASseMbler | cheapernet | checkdigit |
| Checkout Test language | checkpoint | checksum |
| chemist | Chen | CHEOPS |
| Chernobyl packet | chess | CHI |
| Chicago | chicken head | chicklet keyboard |
| chiclet keyboard | Chief Information Officer | child |
| child process | child record | child version |
| CHILI | CHILL | Chimera |
| chine nual | Chinese Army technique | CHIP |
| chip | CHIP-48 | CHIP-8 |
| chip art | chip box | chip creep |
| chip graffiti | Chip Jewelry | Chip Scale Packaging |
| chip set | Chips & Technologies | CHISEL |
| chm | chmod | CHOCS |
| choke | chomp | CHOP |
| Chop | Chorus | Christmas tree |
| Christmas tree packet | Christopher Strachey | chromatic number |
| chrome | chroot | CHRP |
| chug | chug report | chunker |
| Church, Alonzo | Church integer | Church of the SubGenius |
| Church-Rosser Theorem | ci | CI$ |
| CICERO | Cichlid | CICS |
| CID | CIDR | CIEL |
| CIF | CIFS | Cigale |
| CIL | CIM | CIMS PL/I |
| Cinderella Book | CINT92 | C-Interp |
| CIO | ciphertext | CIP-L |
| CIP Language | CIR | CIRCAL |
| circuit | CIRcuit CALculus | circuit switch |
| circuit switched | circuit switching | circular buffer |
| Cirrus Logic | CIS | CISC |
| Cisco Systems, Inc. | CISI | CITRAN |
| CityScape | CIX | CJK |
| CJKV | ck | CL |
| cl | CLAM | C Language Integrated Production System |
| Clarify | Clarion | Claris |
| CLASP | class | Class 5 switch |
| class hierarchy | classic | Classic-Ada |
| classical logic | Classic C | Classless Inter-Domain Routing |
| class library | class method | class object |
| Class Oriented Ring Associated Language | Class-Relation Method | Clausal Language |
| clause | Clean | clean |
| cleanroom | CLEAR | clear box testing |
| Clear Language for Expressing Orders | CLEO | CLHEP |
| CLI | CLiCC | click |
| client | client/get_targets | client-server |
| client/server | Client-Server Analyst Programmer | client-server model |
| Client To Client Protocol | C++Linda | C-Linda |
| CLIP | CLiP | clipboard |
| Clipper | CLIPS | clique |
| CLISP | Clive Sinclair | CLIX |
| CLM | CLNP | clobber |
| clock | clock frequency | clock rate |
| clock speed | clone | clone-and-hack coding |
| clonebot | CLOS | close brace |
| closed-box testing | closed interval | closed set |
| closed term | close parenthesis | Clos network |
| closure | closure conversion | cloud |
| cloud computing | Clover | clover key |
| CLP | CLP* | CLP(R) |
| CLP(sigma*) | CLR | CLtL1 |
| CLtL2 | CLU | clu2c |
| cluster | Cluster 86 | clustergeeking |
| clustering | CLUT | CLV |
| CLX | CM | cm |
| CMA | CMAY | CMC |
| cmd | CMGA | CMIP |
| CMIS | CML | CMM |
| CMOS | CMP | CMS |
| CMS-2 | CMU | CMU CL |
| CMU Common Lisp | CMVC | CMYK |
| CMZ | cn | CNAME |
| CNC | CNET | CNI |
| C|N>K | CNN | CNR |
| CNRI | co | CO2 |
| Coad/Yourdon | COALA | coalesced sum |
| Coalition for Networked Information | coarse grain | COAST |
| coax | coaxial cable | COBOL |
| COBOL-1961 Extended | COBOL fingers | COBRA |
| cobwebsite | Cocktail | cocktail shaker sort |
| CoCo | Cocol | Coco Language |
| Cocol/R | COCOMO | Coco/R |
| CODASYL | Codd's First Normal Form | Codd's reduction algorithm |
| code | Code 2.0 | codebook |
| CODEC | CodeCenter | coded character set |
| Code Division Multiple Access | code division multiplexing | Code-Generator Generator Language |
| code grinder | code management | code police |
| code position | coder/decoder | codes |
| C-odeScript | code segment | code walk |
| codewalker | CODIL | codomain |
| coercion | COFF | COGENT |
| Cogent Prolog | Cognitech | cognitive architecture |
| COGO | Coherent Parallel C | COHESION |
| COIF | CoIP | cokebottle |
| COLASL | COLD | cold boot |
| ColdFusion | ColdFusion Markup Language | COLD-K |
| COLINGO | collision | collision detection |
| collocation | co-location | colon |
| color | Color Graphics Adapter | color model |
| Colossus | colour | colour depth |
| colour look-up table | colour model | colour palette |
| Columbia AppleTalk Package | column | Column Address Strobe |
| COM | com | COMAL |
| combination | combinator | combinatory logic |
| Combined object-oriented Language | Comdex | COME FROM |
| COMIS | COMIT | Comité Européen de Normalisation |
| Comité Européen des Postes et Telecommunications | COMIT II | Comma |
| comma | command | Command Control Processor |
| command interpreter | command key | command line interface |
| command-line interpreter | command line option | comma separated values |
| COMMEN | comment | commented out |
| comment out | commercial at | Commercial Internet eXchange |
| commercial off-the-shelf software | commercial software | Commercial Translator |
| Committed Data Rate | Committed Information Rate | comm mode |
| Commodore | Commodore 1010 | Commodore 128 |
| Commodore 1541 | Commodore 1570 | Commodore 1571 |
| Commodore 1581 | Commodore 64 | Commodore 64DX |
| Commodore 65 | Commodore Business Machines | Commodore SX64 |
| COMmon Algorithmic Language | Common Applications Environment | Common Applications Service Element |
| Common Architecture for Next Generation Internet Protocol | COmmon Business Oriented Language | common carrier |
| Common Command Set | Common Communication Services | Common Data Format |
| Common Desktop Environment | Common ESP | Common Gateway Interface |
| Common Hardware Reference Platform | Common Information Model | Common Intermediate Format |
| Common Intermediate Language | Common Internet File System | Common-ISDN-API |
| Common ISDN Application Programming Interface | Common Lisp | Common LISP in Parallel |
| Common LISP Object System | CommonLoops | Common Management Information Protocol |
| Common Management Information Services | Common Object File Format | Common Object Model |
| Common Object Request Broker Architecture | Common Objects | Common Open Software Environment |
| Common Program Interface | Common User Access | Commonwealth Hackish |
| Communicating Functional Processes | Communicating Sequential Processes | Communication and Network Riser |
| Communications Decency Act | Communications of the ACM | communications port |
| Communications Server | communications software | communication system |
| Community of Massive Gaming Agency | COMNET | compact |
| Compact COBOL | Compact Disc | Compact Disc interactive |
| Compact Disc Read-Only Memory | Compact Disc Read-Write | Compact Disc Recordable |
| Compact Disc Rewritable | Compact Disc writer | compaction |
| compactness preserving | Compaq Computer Corporation | Compas Pascal |
| COMPASS | compatibility | compatible |
| Compatible Timesharing System | Compel | Competitive Access Provider |
| Compiled HTML | compiler | COmpiler and GENeralized Translator |
| compiler compiler | Compiler-Compiler | compiler-compiler |
| compiler jock | Compiler Language for Information Processing | Compiler Target Language |
| compile time | COMPL | complement |
| Complementary Metal Oxide Semiconductor | complementary nondeterministic polynomial | complete |
| complete graph | complete inference system | complete lattice |
| complete metric space | completeness | complete partial ordering |
| complete theory | complete unification | Complex Instruction Set Computer |
| complexity | complexity analysis | complexity class |
| complexity measure | complex number | complex programmable logic device |
| component | component architecture | component based development |
| Component Integration Laboratories | Component Object Model | com port |
| composite | composition | Compositional C++ |
| Compound Document Architecture | compound key | COMPREHENSIVE |
| Comprehensive Perl Archive Network | Comprehensive TeX Archive Network | compress |
| Compressed SLIP | compressed video | compression |
| COMPROSL | Compu$erve | Compulink Information eXchange |
| CompuServe | CompuServe Corporation | CompuServe Information Service |
| CompuServe Interactive Services | Compusult Ltd. | computability theory |
| computable | Computational Adequacy Theorem | computational complexity |
| Computational Fluid Dynamics | computational geometry | computational learning |
| computational molecular biology | COMpute ParallEL | Computer |
| computer | Computer Aided Design | Computer Aided Detector Design |
| Computer Aided Engineering | Computer-Aided Instruction | Computer-Aided Learning |
| Computer Aided Software Engineering | Computer-Aided Software Testing | Computer Aided Test Engineering |
| Computer Animation Movie Language | Computer-Assisted Learning | Computer-Assisted Software Engineering |
| Computer Associates International, Inc. | Computer-Based Training | computer bus |
| Computer Compiler | computer confetti | Computer Conservation Society |
| computer cookie | computer crime | Computer Design Language |
| computer dictionary | Computer Emergency Response Team | computer ethics |
| computer file | computer geek | computer-generated imagery |
| Computer Generation Incorporated | Computer Graphics Metafile | Computer Integrated Manufacturing |
| computer language | Computer Language for AeronauticS and Programming | computer law |
| computer literacy | Computer Management Group of Australia | Computer Mediated Communication |
| computer nerd | computer network | Computer Output on Microfilm |
| Computer Output to Laser Disc | Computer Output to Laser Disk | Computer Professionals for Social Responsibility |
| computer program | computer programming language | Computer + Science NETwork |
| computer security | computer sex | Computer Software Configuration Item |
| Computer-Supported Collaborative Learning | Computer Supported Cooperative Work | Computer Telephone Integration |
| Computer Telephony | Computer Telephony Integration | computer virus |
| computer vision | compute server | computing |
| Computing Devices Canada Ltd. | computing dictionary | computron |
| Compuware Corporation | COMSL | COMTRAN |
| ConC | concatenate | concatenated key |
| concentrator | conceptualisation | Concert/C |
| ConCoord | concrete class | Concrete Data Structure |
| concrete syntax | CONCUR | concurrency |
| Concurrent C | Concurrent C++ | Concurrent Clean |
| Concurrent CLU | Concurrent Constraint Programming | Concurrent Euclid |
| Concurrent LISP | Concurrent Massey Hope | Concurrent ML |
| Concurrent Oberon | Concurrent Object-Oriented C | Concurrent Object-Oriented Language |
| Concurrent Pascal | concurrent processing | Concurrent Prolog |
| Concurrent Scheme | ConcurrentSmalltalk | Concurrent SP/k |
| Concurrent Versions System | condela | condition out |
| condom | Conference On DAta SYstems Languages | Conferencing over IP |
| confidence test | CONFIG.SYS | configuraholic |
| configuration item | configuration management | configuration programming |
| configure | conflation | congestion |
| CONIC | conjunction | Conjunctive Normal Form |
| connect | connected graph | connected subgraph |
| Connection Definition Language | connectionless protocol | Connection Machine LISP |
| connection-oriented | connection-oriented network service | connective |
| connector conspiracy | CONNIVER | Co-NP |
| CONS | cons | cons cell |
| conservative evaluation | considered harmful | consistently complete |
| console | console jockey | consortium |
| Consortium for Lexical Research | constant angular velocity | constant applicative form |
| constant folding | Constantine/Yourdon | constant linear velocity |
| constant mapping | constraint | constraint functional programming |
| Constraint Handling In Prolog | ConstraintLisp | Constraint Logic Programming |
| CONSTRAINTS | constraint satisfaction | constructed type |
| Constructive Cost Model | constructive proof | constructive solid geometry |
| constructor | Consul | consultant |
| container class | content addressable memory | content-based information retrieval |
| content-based visual information retrieval | Content Data Model | content-free |
| contention slot | Contents of Address part of Register | Contents of Decrement part of Register |
| context | context clash | COntext Dependent Information Language |
| context-free grammar | context-sensitive menu | context switch |
| Contextually Communicating Sequential Processes | continental drift | continuation |
| Continuation Passing Style | continuation passing style | continuations |
| continuous function | Continuous System Modeling Program | Continuous System Simulation Language |
| continuous wave | contraction | contract programmer |
| control | Control and Status Register | control bus |
| control-C | control character | control code |
| control flow | control-G | control key |
| Control Language | controller | control-O |
| Control Program | Control Program for Microcomputers | control-Q |
| control-S | control structure | control tty |
| control unit | conventional memory | converged network |
| Convergent Technologies | Convergent Technologies Operating System | Conversational LISP |
| Conversational Monitor System | converse | conversion to iteration |
| CONVERT | convert.f90 | Convex Computer Corporation |
| convex hull | Conway, John Horton | Conway's Game of Life |
| Conway's Law | Conway's Life | cooC |
| cooccurrence matrix | cookbook | cooked mode |
| cookie | cookie bear | cookie file |
| cookie jar | cookie monster | cooky |
| COOL | CooL | COOL:Gen |
| Co-operative Development Environment | Cooperative Information System | cooperative multitasking |
| coordinate | Coordinated Universal Time | Coordinating Committee for Intercontinental Research Networks |
| coordination language | copious free time | copper |
| Copper Distributed Data Interface | coprocessor | copy and paste |
| copybook | copybroke | copying garbage collection |
| copyleft | copy member | copy module |
| copy protection | copyright | copyright symbol |
| copywronged | CORAL | CORAL 66 |
| CORBA | CORBIE | CORC |
| core | core cancer | core dump |
| core gateway | Corel Corporation | core leak |
| Corel VENTURA | Core Protocol Stack | Core War |
| corge | CORnell Compiler | Cornell List Processor |
| Cornell Theory Center | Cornell University | Coroutine Pascal |
| Corporation for National Research Initiatives | Corporation for Open Systems | Corporation for Research and Educational Networking |
| CORREGATE | Correlatives and Conversions | Cortex |
| CORTL | COS | COSE |
| COSINE | cosmic rays | COSS |
| cost control callback | Cost Driver Attribute | Cost/Schedule Control System Criteria |
| COTS | Cougar | cough and die |
| count | countable | countably many |
| counted | counterbug | country code |
| coupling | Course Author Language | courseware |
| Coursewriter III | cowboy | COWSEL |
| CP | CPAN | CParaOps5 |
| CPE | CPGA | CPI |
| CPL | CPLD | CPM |
| CP/M | cpo | cpp |
| cppp | C preprocessor | C Programmer's Disease |
| C-Prolog | cproto | CPS |
| CPSR | CPU | CPU Info Center |
| CPU time | CPU Wars | CR |
| cr | cracker | cracking |
| crack root | crank | crapplet |
| CrApTeX | crash | crash and burn |
| crawler | crawling horror | Cray instability |
| crayola | crayola books | crayon |
| Cray Research, Inc. | CRC | creationism |
| creeping elegance | creeping featurism | creeping featuritis |
| C-Refine | CREN | CREW PRAM |
| crippleware | criptography | Crisis Software |
| CRISP | crisp | Crispy Critters |
| critical mass | critical section | CRL |
| CRLF | CRM | crock |
| cron | cross-assembler | cross-compiler |
| cross-platform | cross-post | cross software |
| CROSSTABS | crosstalk | CROW PRAM |
| CRT | CRUD | crudware |
| cruft | crufted | cruft together |
| crumb | crunch | cruncha cruncha cruncha |
| crunchy | cryppie | crypt |
| cryptanalysis | Crypt Breakers Workbench | cryptography |
| CryptoLocker | cryptology | Crystal |
| CS-4 | C-Scheme | CSCI |
| C/SCSC | CSCW | CSG |
| CSG-tree | csh | C-sharp |
| C shell | CSID | C++SIM |
| CSK Corporation | CSK Software | CSL |
| CSLIP | CSM | CSMA/CD |
| CSMP | CSNET | CSO |
| C=S;O=A | CSP | CSP/80 |
| CS/PCode | CSP/k | CS-Prolog |
| CSPS | CSP-S | CS/QCode |
| CSR | CSS | CSSA |
| CSS/II | CSSL | CSTools |
| CSU | CSU/DSU | CSV |
| CT | CTC | CTC++ |
| CTCP | CTI | CTL |
| CTOS | ctrl | CTS |
| CTSS | CTY | CU |
| cu | CUA | Cube |
| cube | cubing | CUCH |
| Cuckoo's Egg | CUL | Culler-Fried System |
| CUPID | CUPL | curly bracket |
| current | curried function | currying |
| curseperl | curses | cursor |
| cursor dipped in X | CU-SeeMe | CUSI |
| cuspy | custom | Customer Information Control System |
| Customer Information Systems | Customer Interaction Software | Customer Relationship Management |
| CUT | cut and paste | cut-and-waste code |
| cut a tape | cutover | cut-through switching |
| cv | c/version.js | CVS |
| CW | CWeb | CWI |
| CWIC | CWIS | C with Classes |
| cx | cxref | cy |
| Cy486SLC | cyber | cyberbunny |
| cyberchondriac | cybercrime | cybercrime as a service |
| cybercrud | CyberGlove | cybernetics |
| cyberpunk | cyberrhea | cybersex |
| cyberspace | cyberspastic | cyber-squatting |
| CyberWand | CyberZine | CYBIL |
| Cyc | CYCL | cycle |
| cyclebabble | cycle crunch | cycle drought |
| cycle of reincarnation | cycle server | cyclic redundancy check |
| cyclic redundancy code | Cyclo | cyclomatic complexity |
| Cygnus Tcl Tools | cylinder | CypherText |
| Cyrix | Cyrix 6x86 | cz |
| D | D-1000 | DAA |
| DAC | DACAPO | DACNOS |
| D/A converter | DACTL | DADS |
| daemon | DAG | Daisy |
| DAISY 201 | daisy chain | daisywheel printer |
| dancing frog | dangling pointer | DANTE |
| DAP Fortran | DAPLEX | DARE |
| dark-side hacker | Darms | DARPA |
| Dartmouth BASIC | Darwin | DAS |
| DASD | DASE | DASL |
| DAT | data | data abstraction |
| data acquisition | Data Address Generator | database |
| database administrator | database analyst | database machine |
| database management system | database manager | database normalisation |
| database query language | database server | database transaction |
| Data/BASIC | DATABUS | data bus |
| datacenter manager | data channel | DATACODE I |
| Datacom | Data Communication Equipment | data communications analyst |
| Data Communications Equipment | data compression | Data definition language |
| data dictionary | data dictionary file | data driven |
| Data Driven Machine | Data Encryption Algorithm | Data Encryption Key |
| Data Encryption Standard | data feed | data flow |
| data flow analysis | Data Flow Diagram | data fork |
| data frame | Data General | Data General mN601 |
| data glove | datagram | data hierarchy |
| data integrity | Data Interchange Standards Association | Data Jack |
| Datakit | Dataless Management Services | dataless management utility |
| Data Link Connection Identifier | data link layer | data link level |
| Data Link Provider Interface | Data Link Switching | data logger |
| data logging | Data Management Language | Data Manipulation Language |
| data mart | Datamatic Corporation | Datamation |
| data mining | data model | data modeling |
| data modelling | Data Over Cable Service Interface Specification | Data Over Cable Systems Interface Specifications |
| data packet | Dataparallel-C | Data Parallel Haskell |
| data path | Dataphone Digital Service | DataPoint |
| data processing | Data Protection Act | data rate |
| data redundancy | data segment | data service unit |
| data set | data set organization | DataStage |
| data storage | Datastorm Technologies, Inc. | data striping |
| data structure | Data Structure Diagram | Data Structures Language |
| Data Terminal Equipment | Data Terminal Ready | DATA-TEXT |
| data transfer | data transfer rate | DATATRIEVE |
| Datatron 200 series | data type | DataViews |
| DataVis | data warehouse | data warehousing |
| date | DAU | daughter |
| daughterboard | daughtercard | David Turner |
| day mode | DAZIX | DB |
| DB2 | DB-25 | DB2 catalog |
| DBA | dBASE | DBC |
| DBCS | dBFAST | DBH |
| DBMS | DBPL | DBRI |
| dbx | dBXL | DC |
| DC1 | DC2 | DC3 |
| DC4 | DCA | DCAC |
| DCALGOL | DCC | DCDL |
| DCE | DCG | DCI |
| DCL | DCOM | DCP |
| D. C. Power Lab | DCS | DCT |
| DD | dd | DDB |
| DDCMP | DDE | DDE Manager |
| DDIF | DDL | DDM |
| DDN | DDO | DDoS |
| DDP | DDR | DDR-RAM |
| DDR-SDRAM | DDS | DDT |
| DDW | de | DE-9 |
| DEA | DEACON | dead |
| DEADBEEF | dead code | dead code elimination |
| dead-drop | deadlock | deadly embrace |
| dead tree | dead tree edition | deamon |
| death code | Death Star | deb |
| Debbugs | Debian | Debian GNU/Hurd |
| Debian GNU/Linux | debianize | deboursification |
| De Bruijn graph | De Bruijn notation | DEBUG |
| debugger | debugging | debugging an empty file |
| debugging by printf | debugging tool | DEC |
| dec | DEC Alpha | decay |
| DECdesign | DECdns | DEChead |
| dechunker | decidability | decidable |
| decimal point | decision problem | decision support |
| decision support database | Decision Support Systems | decision theory |
| deckle | declarative language | DECmate I |
| DECnet | decode | Decomposed Petri Net |
| decompress | decorated name | decrement operator |
| decryption | DECstation | DECT |
| DECtape | DECUS | Decus cpp |
| DEC Wars | DECwindows | DECwrite |
| DED | dedicated line | deductive database |
| deductive tableau | Deep Blue | deep hack mode |
| deep magic | deep space | de facto standard |
| default | default.htm | default route |
| defect | defect analysis | defect density |
| Defense Advanced Research Project Agency | Defense Advanced Research Projects Agency | Defense Calculator |
| Defense Communications Agency | Defense Data Network | Defense Data Network Network Information Center |
| Defense Information Systems Agency | Defense Trade Regulations | deferral |
| definite clause | definite sentence | definitional constraint programming |
| deflate | deflate compression | deflate/inflate compression |
| deforestation | defrag | defragment |
| defunct process | degree | degrees of freedom |
| dehose | DEK | Delaunay triangulation |
| delayed control-transfer | delay instruction | delay slot |
| delete | delimiter | delint |
| Delirium | Delivered Source Instruction | Dell Computer Corporation |
| Delphi | Delphi Technique | Delta |
| delta | Delta-4 | delta conversion |
| Delta-Prolog | delta reduction | DELTASE |
| demand driven | demand paged | demand paging |
| DeMarco | DeMarco/Yourdon | demented |
| Demeter | demigod | De-Militarised Zone |
| demo | demodulate | demodulation |
| demo mode | demon | Demon Internet Ltd. |
| DeMorgan's theorem | demo version | Denis Howe |
| Dennis Ritchie | denotational semantics | Denotational Semantics Language |
| Department of Defense | Department of Defense Network | depeditate |
| dependability | dependable software | Deployment Descriptor |
| deprecated | depth-first search | deque |
| dequeue | DER | dereference |
| de-rezz | derived class | derived type |
| DES | descender | descent function |
| Descriptive Intermediate Attributed Notation for Ada | Descriptive Top-Level Specification | descriptor |
| design | Design In Real Time | design pattern |
| design recovery | Design System language | desk check |
| desktop | desktop database | Desktop Management Interface |
| Desktop Management Task Force | desktop manager | desktop publisher |
| desktop publishing | DESQview | destructor |
| DESY | DETAB | deterministic |
| deterministic automaton | DETOL | developer |
| development | Developmental Test and Evaluation | development environment |
| device | Device Control | Device Control 1 |
| Device Control 2 | Device Control 3 | Device Control 4 |
| device driver | device independent bitmap | Device Manager |
| Devil Book | devo | DEX |
| DFA | DFC | DFD |
| D-Flat | DFS | DFT |
| DGL | DG/L | DHCP |
| Dhrystone | DHSD | DHTML |
| Dialled Number Identification Service | DIALOG | dialup |
| DIAMAG | diameter | Diamond |
| DIANA | DIB | DIBOL |
| dickless workstation | Dick Size War | DICOM |
| dictionary | Dictionary APL | dictionary flame |
| Dictionary of Algorithms and Data Structures | Dictionary of Computing | DID |
| diddle | Didot point | die |
| die horribly | diff | Difference Engine |
| difference equation | differential backup | differential driver |
| differential line | Diffie-Hellman | digerati |
| digest | Digex | DigiCash |
| Digicom | digirati | digit |
| Digital | digital | digital audio |
| Digital Audio Tape | digital camera | digital carrier |
| digital certificate | digital computer | Digital Control System |
| digital dashboard | Digital Data Service | digital electronics |
| Digital Enhanced Cordless Telecommunications | digital envelope | Digital Equipment Computer Users Society |
| Digital Equipment Corporation | Digital Equipment Corporation Network | Digital European Cordless Telecommunications |
| Digital Express Group, Inc. | Digital Lempel Ziv 1 | Digital Library Initiative |
| Digital Linear Tape | digital logic | Digital Multimeter |
| Digital Radio Mondiale | Digital Research | Digital Rights Management |
| digital service unit | Digital Signal Processing | Digital Signal Processing Language |
| digital signature | digital signatures | Digital Signature Standard |
| Digital Simulation Language | Digital Simultaneous Voice and Data | DIGITAL Standard MUMPS |
| Digital Subscriber Line | Digital Subscriber Line Access Module | Digital Subscriber Loop |
| Digital Switched Network | Digital to Analog Converter | Digital Versatile Disc |
| Digital Versatile Disk Random Access Memory | Digital Video Disc | Dijkstra's guarded command language |
| dike | DIL | Dilbert |
| Dilberted | DIM | DIMATE |
| DIMM | DIM statement | DIN |
| DIN-8 | ding | Dining Philosophers Problem |
| dink | DinnerBell | DINO |
| dinosaur | dinosaur pen | dinosaurs mating |
| diode | Diophantine equation | DIP |
| diplex | DIPP | Direct-Access Storage Device |
| Direct Client to Client Protocol | Direct Connection | directed acyclic graph |
| directed graph | Directed Oc | directed set |
| Direct Inward Dialing | directional coupler | Directly Executable Test Oriented Language |
| direct mapped cache | Direct Memory Access | directories |
| directory | Directory Access Protocol | directory service |
| Directory System Agent | Directory User Agent | DirectX |
| DIRFT | Dirt | dirtball |
| dirty power | dis | DISA |
| disaster planning | disaster recovery | disc |
| disc drive | disclaimer | disconnect |
| Discordianism | discrete | discrete cosine transform |
| discrete Fourier transform | discrete preorder | discriminated union |
| discussion group | Disiple | disjoint union |
| Disjunctive Normal Form | disk | disk controller |
| disk drive | disk duplexing | diskette |
| disk farm | diskless workstation | disk mirroring |
| Disk Operating System | disk operating system | disks |
| disk striping | Dislang | disman |
| display | display hack | Display PostScript |
| Display Screen Equipment | display standard | display standards |
| display terminal | Dissociated Press | distfix |
| Distinguished Encoding Rules | Distributed Component Object Model | Distributed Computing Environment |
| distributed database | Distributed Data Management | distributed data warehouse |
| Distributed Denial of Service | Distributed Eiffel | Distributed Logic Programming |
| Distributed Management Environment | distributed memory | Distributed Network Operating System |
| Distributed Operating Multi Access Interactive Network | Distributed Processes | Distributed Queue Dual Bus |
| Distributed Smalltalk | distributed system | distributed systems |
| distribution | distributive lattice | disusered |
| dithering | Ditto Drive | diverge |
| divisor | dj | DJGPP |
| DjVu | DK | dk |
| DL/1 | DLC | DLCI |
| DLE | DLG | DL/I |
| DLL | DLM | DLP |
| DLPI | DLSw | DLT |
| DLUR/DLUS | DLZ1 | dm |
| DMA | DMAD | dmake |
| DMALGOL | DME | DMI |
| DML | DMM | DMS |
| DMTF | DMU | DMZ |
| DNA computing | DNF | DNIS |
| DNIX | DNOS | DNS |
| do | DOA | Doc |
| doc | docking station | DOCMaker |
| doco | DOCSIS | doctype decoration |
| document | documentation | Document Examiner |
| Document Image Processing | Document Object Model | Document Style Semantics and Specification Language |
| Document Type Definition | DOCUS | DoD |
| DoD-1 | dodgy | DOD-STD-2167A |
| DoD-STD-2168 | DOE | DOF |
| dog | dogcow | dogfood |
| dogfooding | dogpile | dogwash |
| Do It Right the First Time | Dojo | DOL |
| dollar | do loop | DOM |
| domain | domain address | Domain Analysis |
| domain architecture | Domain Architecture Model | domain calculus |
| domain driven design | domain engineering | domain handle |
| domainist | domain maturity | domain model |
| domain name | Domain Name Server | Domain Name System |
| domain selection | Domain Software Engineering Environment | domain-specific language |
| domain squatter | domain theory | Domestic Communications Assistance Center |
| DOMF | Donald Knuth | dongle |
| dongle cracker | dongle-disk | Don't do that then! |
| donuts | Dooced | DOOM |
| DOORS | doorstop | Dorito Syndrome |
| DORUM | DOS | DOS/360 |
| DOS Protected Mode Interface | DOS requester | dot |
| dot address | dot com | dotenv |
| dot file | dot leaders | dot matrix printer |
| dot notation | dot pitch | dotted pair |
| dotted quad | double bucky | double-click |
| Double Data Rate Random Access Memory | Double Data Rate Synchronous Random Access Memory | double DECkers |
| double density | doubled sig | double-duplex |
| double-ended queue | double quote | doubly linked list |
| DOUGLAS | Douglas Engelbart | Doug Lenat |
| DOW COMPILER | Do What the Fuck You Want to Public License | do while |
| down | download | downloading |
| downsizing | downstream | down-time |
| downward closed | Downy cocktail | DP |
| DPA | DPB | DPer |
| dpi | DPL | DPL-82 |
| DPLL | DPMI | DPMS |
| DPN | DPP | d-Prolog |
| DPS | DPS-6 | dpSather |
| DPSK | DQDB | draco |
| Draft Once ReUse Many | drag | drag and drop |
| dragging | drag-n-drop | DRAGON |
| dragon | Dragon Book | DRAGOON |
| drain | DRAM | DRAM refresh |
| Drawing eXchange Format | dread high bit disease | DREAM 6800 |
| DRECNET | drill down | drill-down analysis |
| drive | drive-by download | drivers |
| Dr. James H. Clark | DRM | droid |
| DROOL | drool-proof paper | drop cable |
| drop-down list | drop-down menu | drop-ins |
| drop on the floor | drop-outs | DrScheme |
| DRUCO I | drugged | drug report |
| drum | drunk mouse syndrome | dry run |
| DS0 | DS1 | DS1C |
| DS2 | DS3 | DSA |
| DSDM | DSE | DSEE |
| D-shell connector | DSI | DSL |
| DSLAM | DS level | DSM |
| DSN | DSO | DSORG |
| DSP | DSP32 Assembly Language | DSP56000 |
| DSP56001 | dsp56165-gcc | dsp56k-gcc |
| DSP/C | DSPL | DSR |
| DSS | DSSSL | DST |
| DSU | DSVD | DSW |
| DTALGOL | DTD | DTE |
| DT&E | DTLS | DTMF |
| DTP | DTR | DTS |
| DTSS | D-type | D-type flip-flop |
| du | DUA | dual |
| DUAL-607 | dual-attached | dual boot |
| dual-homed | Dual In-Line | Dual In-line Memory Module |
| Dual In-Line Package | dual ported | dual-stack |
| Dual Tone Multi Frequency | duck typing | DUEL |
| duff | Duff's device | dumbed down |
| dumb terminal | dump | dumpster diving |
| Dungeon | dup killer | duplex |
| Duplex High Speed Data | dup loop | Durra |
| dusty deck | DV cartridge | DVD |
| DVD-R | DVD-RAM | DVD-ROM |
| DVI | Dvorak | Dwarf Storage Unit |
| DWDM | dweeb | dwg |
| DWIM | DX4 | DXF |
| dyadic | Dyadic Systems Limited | Dyalog APL |
| Dyalog Limited | DYANA | Dylan |
| Dylperl | dynamic adaptive routing | Dynamic Address Translation |
| Dynamically Linked Library | dynamically scoped | dynamically typed |
| dynamic analysis | dynamic binding | dynamic database management system |
| Dynamic Data Exchange | Dynamic Data Linking | dynamic DBMS |
| Dynamic Drive Overlay | Dynamic Execution | Dynamic Host Configuration Protocol |
| Dynamic HTML | DYnamic LANguage | dynamic link |
| dynamic link library | Dynamic Object-Oriented Requirements System | dynamic RAM |
| dynamic random-access memory | dynamic routing | DYnamics ANAlyzer |
| dynamic scope | dynamic scoping | Dynamic Systems Development Method |
| dynamic translation | dynamic typing | DYNAMO |
| Dynix | Dynix Automated Library Systems | dynner |
| DYSAC | DYSTAL | dz |
| E | E1 | E2 |
| E2ES | E3 | E4 |
| E5 | E-acute | EAF |
| EAG | eager evaluation | Eagle |
| EAI | EAPROM | earliest deadline first |
| Early PL/I | EARN | EAROM |
| earthquake | Ease | EASE II |
| EASIAC | EAST | easter egg |
| Easter egging | Eastern Washington University | EASY FOX |
| eat flaming death | eating one's own dogfood | eating your own dogfood |
| EAX | EBASIC | EBCDIC |
| EBCIDIC | EBNF | Ebone |
| ec | EC++ | ECAP II |
| E-carrier system | Ecash | ECC |
| Eccles-Jordan circuit | Echidna | echo |
| echo cancellation | ECHT | ECIP2 |
| ECIS | Eckert-Mauchly Computer Corporation | ECL |
| ECLIPSE | ECM | ECMA |
| ECMA International | ECMAScript | Ecole Normale Superieure |
| e-commerce | Econet | ECOOP |
| ECP | ECRC | ECRC-Prolog |
| ECSL | ECSP | ECSS II |
| ECSSL | ed | EDA |
| EDAC | e-ddress | Eden |
| Eden Programming Language | EDF | EDI |
| EDI analyst | EDIF | EDIFACT |
| Edinburgh Multi Access System | Edinburgh Prolog | Edinburgh SML |
| Edison | edit | editor |
| EDL | EDM | EdML |
| EDMS | Ed Nather | EDO DRAM |
| EDO memory | EDO RAM | EDP |
| EDP auditor | EDRAM | EDS |
| EDS+ | EDSAC | edu |
| education contact | edutainment | Edward Lorenz |
| Edward Yourdon | Edwin | ee |
| EEMA | EEPROM | EER |
| E. F. Codd | EFF | effective computable |
| effective number of bits | Effort Adjustment Factor | EFI |
| EFL | EFNet | Eforth |
| E-Forth | EFT | EFTPOS |
| EFTS | eg | EGA |
| Eggdrop | egosurfing | EGP |
| egrep | Egyptian brackets | Eh |
| eh | eHelp Corporation | EHTS |
| EIA | EIA-232 | EIA-232C |
| EIA-422 | EIA-423 | EIA-449 |
| EIA-485 | EIA-530 | EIDE |
| Eiffel | Eiffel source checker | eigenvalue |
| eigenvector | eight-bit clean | eight queens problem |
| eight queens puzzle | eighty-column mind | eighty-twenty rule |
| EIRP | EISA | EJB |
| Eksi Sozluk | EL1 | el(alpha) |
| Elan | El Camino Bignum | elder days |
| e-learning | Electing a Pope | Electrically Alterable Programmable Read-Only Memory |
| Electrically Erasable Programmable Read-Only Memory | Electromagnetic Compatibility | electromigration |
| electron | electronic commerce | Electronic Commerce Dictionary |
| electronic data interchange | Electronic Data Processing | Electronic Design Automation |
| Electronic Discrete Sequential Automatic Computer | Electronic Frontier Foundation | electronic funds transfer |
| Electronic Funds Transfer Point of Sale | electronic funds transfer system | electronic magazine |
| electronic mail | electronic mail address | electronic mail client |
| electronic meeting | Electronic Numerical Integrator and Computer | Electronic Performance Support System |
| Electronic Piece Of Cheese | Electronic Report Management | Electronics Industry Association |
| electronic whiteboarding | electron model | electron tube |
| Electrostatic Discharge | elegant | element |
| elephant | elephantine | elevator controller |
| ELF | ELI | Eli Compiler Construction System |
| ELISP | elite | ELIZA |
| ELIZA effect | Elk | ELLA |
| Ellemtel | Ellie | ELLIS |
| elm | ELMAGUIDE | ELMAMETA |
| ELP | ELSIE | Elvis |
| elvish | EM | EM-1 |
| EMA | Emacs | Emacs Lisp |
| e-mail | e-mail address | e-mail client |
| EMAS | Embedded Lisp Interpreter | Embedded Mode |
| embedded system | embedding | EMBLA Pro |
| embosser | EMC | EMD Enterprises, Inc. |
| EMDIR | Emerald | EMI |
| Emitter Coupled Logic | EML | EMM |
| EMM386 | emote | emoticon |
| empeg | empire | empty element tag |
| Empty Nest | EMS | emTeX |
| EMU8000 | emulation | emulator |
| Emulator program | EMX | enabling |
| Encapsulated PostScript | encapsulation | encode |
| encoder | encryption | endian |
| endless loop | End Of Line | End of Medium |
| End Of Text | End Of Transmission | end tag |
| end-to-end solution | End Transmission Block | end-user |
| engage | Engelbart, Douglas | engine |
| English | English shellcode | enhanced |
| Enhanced Capabilities Port | Enhanced Directory Service | Enhanced Dynamic Random Access Memory |
| Enhanced Graphics Adapter | Enhanced IDE | Enhanced Integrated Drive Electronics |
| enhanced parallel port | Enhanced Small Disk Interface | enhancement |
| ENIAC | Enigma | ENOB |
| ENQ | enqueue | ENS |
| Ente Nazionale Italiano di Unificazione | enterprise | Enterprise Application Integration |
| Enterprise JavaBeans | Enterprise Report Management | Enterprise Resource Planning |
| Enterprise Systems CONnectivity | EntireX | entity |
| entity-relationship diagram | entity-relationship model | entropy |
| Entry Sequenced Data Set | enumerated type | enumeration |
| environment | Environmental Audio eXtensions | environment variable |
| Envoy | EOF | EOL |
| EOR | EOT | EOU |
| EOUG | EP | EPCS |
| ephemeral port | EPILOG | EPIM |
| epistasis | EPL | EPOC |
| epoch | EPP | EPROM |
| EPROM OTP | EPROS | EPS |
| EPSILON | epsilon | epsilon squared |
| EPSIMONE | EPSS | EqL |
| EQLOG | EQLog | Eqn |
| equals | equational logic | Equational Programming Language |
| Equel | equivalence class | equivalence class partitioning |
| equivalence partitioning | equivalence relation | equivalent isotropically radiated power |
| ER | er | ERA |
| era | Erasable Programmable Read-Only Memory | erase |
| eraser stains code | ERC | ERCIM |
| ERD | EREW PRAM | ERFPI |
| ergonomic | ergonomics | ERGO-Shell |
| Eric Conspiracy | Eric S. Raymond | Eris |
| Erlang | ERM | erotica |
| ERP | error | error-based testing |
| error correcting memory | error detection and correction | es |
| ES-1 | ESA | ESC |
| ESCAPE | escape | escape sequence |
| ESCD | ESCON | escrow |
| ESD | ESDI | ESF |
| ESI | esim | ESL |
| ESLPDPRO | ESML | ESMTP |
| esolang | esoteric programming language | ESP |
| ESPOL | ESPRIT | ESR |
| essential complexity | Estelle | Esterel |
| EstPC | ET | et |
| ET++ | eta abstraction | eta conversion |
| eta expansion | eta reduction | ETB |
| ETC | e-text | ETHER |
| EtherGate | Ethernet | Ethernet address |
| Ethernet meltdown | Ethernet Private Line | EtherTalk |
| ethics | ETL | ETM |
| ETRN | ETSI | ETX |
| Euclid | Euclidean Algorithm | Euclidean norm |
| Euclid's Algorithm | Eudora | EULA |
| EULER | EuLisp | EUnet Ltd. |
| Euphoria | Eureka | Eureka step |
| Eurisko | Eurocard | Euro-ISDN |
| EuroNet | EuropaNET | European Academic and Research Network |
| European Committee for Standardization | European Computer-Industry Research Centre GmbH | European Computer Manufacturers Association |
| European Strategic Programme for Research in Information Technology | European Telecommunications Standards Institute | EUUG |
| EV6 | Eva | EVALUATE |
| evaluation | evaluation strategy | evaluator |
| EVE | event | Event Description Language |
| event-driven | EVGA | evolutionary algorithm |
| evolutionary computation | evolutionary programming | evolution strategy |
| EWOS | exa- | Exabyte |
| exabyte | examining the entrails | EXAPT |
| Excalibur bug | Exceed | Excel |
| Excelan | Excelerator | exception |
| exception handler | EXCH | Exchange Server |
| excl | exclamation mark | exclamation point |
| exclusive or | EXCP | EXE |
| EXEC | exec | EXEC 2 |
| EXEC 8 | executable | executable content |
| execute | Execute Channel Program | execution |
| executive | Executive Systems Programming Oriented Language | exercise, left as an |
| exhaustive testing | existence proof | existential quantifier |
| exit | EXODUS | eXodus |
| EXOS | expanded memory | expanded memory manager |
| expanded memory page frame | Expanded Memory Specification | expansion card |
| expansion slot | expect | eXperimental LISP |
| Experimental Physics Control Systems | Experimental Programming Language | Experiment Description Language |
| Expert Judgement Models | expert system | Expert Systems Ltd. |
| explicit parallelism | explicit type conversion | exploit |
| Exploratory Data Analysis | exponent | exponential |
| exponential-time | exponential-time algorithm | Express |
| expression | expression tree | extend |
| Extended Affix Grammar | Extended ALGOL | Extended Architecture |
| Extended Backus-Naur Form | Extended Binary Coded Decimal Interchange Code | Extended BNF |
| Extended C++ | Extended Capabilities Port | Extended Concurrent Prolog |
| Extended Data Out Dynamic Random Access Memory | Extended Data Out Random Access Memory | Extended Fortran Language |
| eXtended Graphics Array | Extended Industry-Standard Architecture | extended memory |
| extended memory manager | Extended Memory Specification | Extended ML |
| Extended Pascal | Extended Self-containing Prolog | Extended System Configuration Data |
| Extended Systems Modelling Language | Extended Tcl | Extended Tiny |
| Extended Video Graphics Array | eXtended Video Graphics Array | ExTendible Compiler |
| extensible | extensible database | Extensible Firmware Interface |
| Extensible HyperText Markup Language | Extensible Markup Language | Extensible Shell |
| Extensible Stylesheet Language | Extensible Stylesheet Language Transformations | Extensible VAX Editor |
| extension | extensional | extensional equality |
| extensionality | Extension Language Kit | Exterior Gateway Protocol |
| eXternal Data Representation | External Machine Interface | external memory |
| EXTRA | extranet | extrapolate |
| extrapolation | EXUG | eyeball search |
| EZ | ezd | e-zine |
| F100-L | f2c | F2F |
| F68K | FAC | facebook.com |
| face time | face-to-face | Facile |
| facsimile | FACT | fact |
| factor | factorial | FAD |
| failback | failover | failure |
| failure-directed testing | FAIR | Fairchild F8 |
| fall back | fall forward | fall over |
| fall through | fall thru | FALSE |
| FancyIndexing | fandango on core | fan-out |
| FAP | FAQ | FAQL |
| FAQ list | faradise | farkled |
| farm | farming | FARNET |
| fas | FASBOL | fascist |
| FASE | FAST | Fast ATA |
| Fast ATA-2 | Faster LEX | Fast Ethernet |
| Fast Fourier Transform | Fast Packet | Fast Page Mode Dynamic Random Access Memory |
| Fast SCSI | FAT | FAT32 |
| fatal | fatal error | fatal exception |
| fat binary | fat client | fat electrons |
| fault | fault-based testing | fault tolerance |
| fault tolerant | Fault Tolerant Unix | fault tree analysis |
| fax | Fax over IP | FC |
| FC-AL | FCB | F-code |
| FCP | FC-PGA | FCS |
| FDC | FDD | FDDI |
| FDISK | fd leak | fdlibm |
| FDMA | FDSE | FDSP |
| FDT | fdx | FEA |
| fear and loathing | fear-driven development | feasibility study |
| feasible | feature | feature creature |
| feature creep | featurectomy | feature key |
| feature shock | FEC | FED |
| Federal Geographic Data Committee | Federal Information Exchange | Federal Information Processing Standards |
| Federal Networking Council | federation | Federation Against Software Theft Limited |
| Fedora | feed | feedback |
| feedback control | feed-forward | Feel |
| feep | feeper | feeping creature |
| feeping creaturism | FEL | femto- |
| fence | fencepost error | fepped out |
| FEPROM | Fermat prime | Fermat's Last Post |
| Ferranti F100-L | ferrite core memory | Ferroelectric RAM |
| Ferroelectric Random Access Memory | Fetch | fetch-execute cycle |
| Feynman, Richard P. | FF | ffccc |
| FFP | FFT | FGDC |
| FGHC | FGL | FGL+LV |
| FGRAAL | fgrep | FhG |
| FHS | FHSS | fi |
| Fiber Distributed Data Interface | Fiber Optic InterRepeater Link | fiber optics |
| Fibonacci sequence | Fibre Channel | Fibre Channel-Arbitrated Loop |
| fibre optics | FIDIL | FIDO |
| FidoNet | Fidonews | field |
| field circus | field effect transistor | field emission display |
| field mouse | field-programmable gate array | field servoid |
| FIFO | Fifth | Fifth Dimension Technologies |
| fifth generation language | fifth normal form | Fight-o-net |
| file | File Allocation Table | File Attach |
| File Composition | file compression | file control block |
| file descriptor | file descriptor leak | file extension |
| FileMaker | FileMaker, Inc. | filename extension |
| FileNet | File Request | File Separator |
| file server | File Service Protocol | file signature |
| file system | Filesystem Hierarchy Standard | file transfer |
| File Transfer Protocol | file type | filing system |
| filk | fill-out form | film at 11 |
| FILO | Filtabyte | filter |
| filter promotion | FIMS | Finagle's Law |
| Financial Information eXchange | Finder | fine adjuster |
| fine grain | finger | finger-pointing syndrome |
| finite | Finite Automata | Finite Automaton |
| finite differencing | Finite Impulse Response | Finite State Automata |
| Finite State Automaton | Finite State Machine | finn |
| FIPS | FIR | firebottle |
| firefighting | Firefox | firehose syndrome |
| firewall | firewall code | firewall machine |
| FireWire | fireworks mode | Firmware |
| firmy | first class module | first fit |
| first generation | first generation computer | first generation language |
| first-in first-out | first normal form | first-order |
| first-order logic | First Party DMA | fish |
| FISH queue | FITNR | FITS |
| FIX | fix | fixed disk |
| fixed point | fixed-point | fixed point combinator |
| fixed-radio access | fixed-width | FIXME |
| fixpoint | fj | Fjolnir |
| fk | FL | F+L |
| flag | flag day | FLAIR |
| flaky | flamage | flame |
| flame bait | flame off | flame on |
| flamer | flame war | flaming |
| FLAP | flap | flapping router |
| flarp | Flash | flash |
| flash drive | Flash EPROM | Flash Erasable Programmable Read-Only Memory |
| Flash Lights Impressively | flash memory | Flash ROM |
| flat | flat address space | flat ASCII |
| flat file | flat file database | flatten |
| flat thunk | Flavors | Fleng |
| FLEX | Flex | Flex++ |
| Flex 2 | FLI | flib |
| FLIC | FLIP | Flip Chip Pin Grid Array |
| flip-flop | flippy | FLIP-SPUR |
| float | floater | floating-point |
| floating-point accelerator | Floating-Point SPECbaserate | Floating-Point SPECbaseratio |
| Floating-Point SPECrate | Floating-Point SPECratio | floating point underflow |
| Floating-Point Unit | floating underflow | F-Logic |
| flood | FLOP | Floppy |
| floppy | floppy disc | floppy disk |
| floppy disk drive | floppy drive | FLOPS |
| Flops | floptical | Flow |
| flow chart | flow control | flower key |
| FLOW-MATIC or FLOWMATIC | flow of control | FLPL |
| FLUB | Fluegelman, Andrew | flush |
| Flynn's taxonomy | fly page | Flyspeck 3 |
| flytrap | FM | fm |
| FMPL | FMQ | FMS |
| FMV | FNAL | FNC |
| fnord | FN tunnelling | fo |
| FOAD | FOAF | FOCAL |
| FOCL | FOCUS | focus group |
| FOD | FOIL | FoIP |
| FOIRL | fold case | folder |
| fold function | FOLDOC | followup |
| font | fontology | foo |
| foobar | foogol | FOOL |
| fool file | Fools' Lisp | Foonly |
| FOOP | foot-net | footprint |
| for | fora | FORC |
| Force | ForceOne | ForceTwo |
| foreground | Foreign eXchange Office | Foreign eXchange Subscriber |
| foreign key | Foresight | for free |
| fork | fork bomb | forked |
| for loop | FORM | FORMAC |
| FORMAL | formal argument | Formal Description Technique |
| formal methods | Formal Object Role Modeling Language | formal review |
| format | FORMAT-Fortran | Formatting Output Specification Instance |
| Formes | form factor | form feed |
| form function | FORML | forms |
| formula | Formula ALGOL | Forsythe |
| FORTH | for The Rest Of Them | for The Rest Of Us |
| Forth Modification Lab | Fortran | Fortran 66 |
| Fortran 77 | Fortran 90 | Fortran Automatic Symbol Translator |
| Fortran D | Fortran I | Fortran II |
| Fortran III | Fortran IV | Fortran-Linda |
| Fortran M | Fortran Matrix Abstraction Technique Fortran | Fortran-Plus |
| FORTRANSIT | Fortran V | Fortran VI |
| Fortrash | FORTRUNCIBLE | fortune cookie |
| forum | for values of | forward |
| forward analysis | forward chaining | forward compatibility |
| forward compatible | forward delta | forward engineering |
| Forward Error Correction | forwards compatibility | forwards compatible |
| FORWISS | For Your Information | FOSI |
| FOSIL | FOSS | fossil |
| foundation | FOundation for Research and Technology - Hellas | four-colour glossies |
| four colour map theorem | four colour theorem | Fourier transform |
| fourth generation computer | fourth generation language | fourth normal form |
| Fowler-Nordheim tunnelling | Fox | FoxBASE+ |
| FoxPRO | Fox Software | Fox Wiki |
| FP | FP2 | FPA |
| fpc | FPGA | FPLMTS |
| FPM | FP/M | FPM DRAM |
| fprintf | fps | FPU |
| FQDN | FQL | fr |
| FRA | fractal | fractal compression |
| fractal dimension | FRAD | fragile |
| fragment | fragmentation | FRAM |
| frame | frame buffer | Frame Check Sequence |
| frame grabber | FrameKit | FrameMaker |
| frame pointer | frame rate | Frame Relay |
| Frame Relay Access Device | frames per second | Frame Technology Corporation |
| framework | Framework 4 | framing specification |
| FRANK | Franz Lisp | Fraps |
| Fraunhofer Gesellschaft | FRED | fred |
| Fredette's Operating System Interface Language | frednet | free |
| FreeBSD | FreeHEP | Freenet |
| Free Objects for Crystallography | Free On-line Dictionary | free open-source software |
| FreePPP | freerexx | free software |
| Free Software Foundation | free variable | freeware |
| freeze | Frege, Gottlob | frequency division multiple access |
| frequency division multiplexing | Frequency-Hopping Spread Spectrum | Frequency Modulation |
| Frequency Shift Keying | frequently asked question | Fresco |
| Fresh | friction feed | fried |
| Friend | FRINGE | frink |
| friode | fritterware | FRL |
| FRMT-FTRN | frob | frobnicate |
| frobnitz | Frobozz Magic Programming Language | frogging |
| Frolic | front end | front-end processor |
| front side bus | frotzed | frowney |
| fry | FS | FSB |
| fsck | FSF | FSK |
| FSL | FSM | FSP |
| fsplit | FT | FTAM |
| FTP | FTP archive | FTP by mail |
| FTP server | FTP Software, Inc. | FTTP |
| FTW | FTX | FUBAR |
| FUD | fudge | fudge factor |
| Fudgets | FUDGIT | FUD wars |
| Fuel-can | Fugue | Fujitsu |
| full-custom | full-duplex | full-duplex Switched Ethernet |
| full laziness | full-motion video | full outer join |
| fully associative cache | Fully Automated Compiling Technique | fully lazy lambda lifting |
| fully qualified domain name | fum | Fun |
| function | functional | functional database |
| functional dependency | functionality | functional language |
| functional program | functional programming | functional programming language |
| functional requirements | functional specification | functional testing |
| functional unit | function application | function complete |
| Function Graph Language | function inlining | function key |
| Function Point Analysis | functor | funky |
| FUNLOG | FunnelWeb | funny money |
| furigana | furrfu | FUSE |
| FUSION | fusion | FutureBasic |
| future date testing | futz | fuzzball |
| fuzzy computing | fuzzy logic | fuzzy subset |
| fweep | FWIW | fx |
| FX-87 | FX-90 | FXO |
| FXS | FYA | FYI |
| FYI4 | G | G2 |
| G3 | G4 | GA |
| ga | Gabriel | gabriel |
| Gabriel, Richard | GADS | Gaelic |
| gag | GAIA | GAL |
| Galaxy | Galileo | Gambit |
| games | game tree | GAMMA |
| gamma correction | GAMS | gamut |
| GAN | GANDALF | gang bang |
| GAP | GAPLog | garbageabetical order |
| garbage collect | garbage collection | Garbage In, Garbage Out |
| Gargoyle | Garnet | GARP |
| garply | Gartner Group | gas |
| GASP | gas plasma display | GAT |
| GATE | gate | gated |
| Gates | gateway | Gateway 2000 |
| Gauss | Gaussian distribution | gawk |
| GB | Gb | gb |
| g-bell | GBIP | GBML |
| gbps | GC | GCAL |
| GCC | GCL | G-Code |
| GCOS | GCOS Macro Assembler Program | GCR |
| GCT | gd | GDA |
| GDB | GDBPSK | Gödel, Kurt |
| GDI | GDMO | GDPL |
| GE | ge | GE-645 |
| GEA | GEANT | GECOM |
| GECOS | Gedanken | gedanken |
| geef | geek | geek out |
| GEI | GE Information Services | GEM |
| gen | gender mender | Gene Amdahl |
| General Activities Simulation Program | General Aerodynamic Simulation Program | General Dynamics Canada Ltd |
| General Electric | General Electric Comprehensive Operating System | General Magic |
| General Packet Radio Service | General Protection Failure | General Protection Fault |
| General Public Licence | General Public License | General Public Virus |
| General Purpose Graphic Language | General Purpose Interface Bus | General Purpose Language |
| General Purpose Macro-generator | General Recursion Theorem | generate |
| generation | Generic Array Logic | Generic Expert System Tool |
| generic identifier | genericity | generic markup |
| generic programming | Generic Routing Encapsulation | Generic Security Service Application Programming Interface |
| generic thunk | generic type variable | Genesia |
| genetic algorithm | genetic algorithms | genetic programming |
| GEnie Services | Genken Programming Language | GENOVA |
| gensym | Gensym Corporation | Gensym Standard Interface |
| Gentleman's Portable Coroutine System | GEN-X | Geographical Information System |
| Geographic Information System | geometric mean | GEORGE |
| GEORGE 3 | George Boole | Georg Simon Ohm |
| GEOS | GEPURS | Gerald |
| Gerald Sussman | German | German National Research Center for Computer Science |
| GEST | Get a life! | Get a real computer! |
| get.com | getty | gf |
| GFDL | g file | GFLOPS |
| GFR | GFS | gh |
| GHC | ghetto code | ghost |
| Ghostscript | ghostview | GHz |
| GI | gi | Gibson, William |
| gid | GIF | GIF89 |
| GIF89a | GIFF | gig |
| giga- | gigabit | gigabits per second |
| gigabyte | gigaflop | gigaflops |
| GigaHertz | GIGO | gilley |
| gillion | Gilmore, John | GIM-1 |
| GIN | GINA | Ginger |
| GIP | GIPS | GIRL |
| GIS | Giuseppe Peano | GIYF |
| GKS | GKS-3D | GL |
| gl | Glammar | glark |
| Glasgow Haskell Compiler | GLASS | glass |
| glass box testing | glassfet | glass tty |
| GLB | glibc | Glish |
| Glisp | glitch | glob |
| global index | globalisation | Global Network Navigator |
| Global Positioning System | Global System for Mobile Communications | glork |
| GLOS | GLOW | GLS |
| GLU | glue | glue language |
| glyph | Glypnir | gm |
| GMAP | GMD | GMD Toolbox for Compiler Construction |
| GMT | gn | gnarly |
| Gnat | GNATS | GNN |
| GNOME | Gnome Computers | GNU |
| GNU archive site | GNU assembler | GNU awk |
| GNU BC | GNU C | GNU C Library |
| GNU DC | GNU E | GNU Emacs |
| GNU Free Documentation License | GNU General Public License | GNUMACS |
| GNU mirror site | GNU Network Object Model Environment | Gnuplot |
| GNU Privacy Guard | GNU Problem Report Management System | GNU public licence |
| GNUS | GNU sed | GNU Smalltalk |
| GNUstep | GNU style | GNU superoptimiser |
| Go | goal | goal seek |
| Go Back N | gobble | GObject Introspection |
| Godwin's Law | Godzillagram | Goedel |
| go-faster stripes | Gofer | Goffin |
| go flatline | GO-GO | go gold |
| GOL | golden | golf ball printer |
| GOM | gonk | gonkulator |
| GOOD | Good Thing | Google |
| googol | googolplex | gopher |
| Gopher client | Gopher object type | Gopherspace |
| gorets | gorilla arm | go root |
| gorp | GOSIP | Gosling, James |
| GOSMACS | Gosperism | GOSPL |
| gotcha | goto | Gottlob Frege |
| gov | governance | Government OSI Profile |
| go voice | GP | gp |
| GPF | GPIB | GPL |
| GPM | GPRS | GPS |
| GPSS | GPU | GPV |
| GPX | gq | gr |
| GRAAL | grabber pointer | Grace Hopper |
| GRAF | Graffiti | GRAIL |
| GRAIN | grain | GRAM |
| grammar | grammar analysis | grammatical inference |
| Grandfather, Father, Son | granularity | Grapes |
| Grapevine | graph | Graph Algorithm and Software Package |
| graph coloring | graph colouring | Graphic ALGOL |
| Graphical Kernel System | Graphical User Interface | Graphic Display Interface |
| Graphic Language | graphics | graphics accelerator |
| graphics adapter | graphics adaptor | graphics card |
| Graphics Interchange Format | Graphics Interface Format | Graphics Language Object System |
| graphic workstation | Graph-Oriented Object Database | graph plotter |
| graph reduction | graph rewriting system | GRAPPLE |
| GRAS | GRASP/Ada | GRASPIN |
| grault | Gray | graybar land |
| Gray code | gray-scale | GRE |
| greater than | greatest common divisor | greatest lower bound |
| Great Renaming | Great Runes | Great Worm |
| greek | greeking | Green |
| Green Book | Green Book CD-ROM | green bytes |
| green card | green lightning | green machine |
| green monitor | Green's Theorem | Greenwich Mean Time |
| green words | Greg Olson | Gregorian calendar |
| grep | grey-scale | Greystone Technologies |
| GRG | GRIB | grick |
| grilf | Grim File Reaper | GRIND |
| grind | grind crank | GRIP |
| gripenet | gritch | grix |
| groff | grok | gronk |
| gronked | group | Group 3 |
| Group 4 | Group Code Recording | group identifier |
| Group Separator | Group-Sweeping Scheduling | Groupware |
| Groupwise | grovel | grunge |
| gry | GS | gs |
| GSBL | GSI | GSL |
| GSM | GSPL | GSS |
| GSS-API | gt | gtg |
| GTK+ | GTL | GT/SQL |
| gu | guaranteed scheduling | guard |
| Guarded Horn Clauses | gubbish | guest book |
| GUI | GUIDE | Guide |
| Guide to Available Mathematical Software | guiltware | gun |
| gunch | Gunning Transceiver Logic | gunzip |
| Gupta Corporation | gurfle | guru |
| guru meditation | Guy Lewis Steele, Jr. | Guy Steele |
| GVL | gw | GW-Ada |
| GW-BASIC | gweep | GWHIS |
| GWM | gy | Gypsy |
| gz | gzip | h |
| H.261 | H.264 | H.323 |
| Habitat | hack | hackathon |
| hack attack | hacked off | hacked up |
| hacker | hacker ethic | hacker humour |
| hacking run | Hacking X for Y | Hackintosh |
| hackish | hackishness | hackitude |
| hack mode | hack on | hack together |
| hack up | hack value | ha ha only serious |
| hair | hairball | hairy |
| hairy ball | HAKMEM | hakspek |
| HAL | half-duplex | halftone |
| HALGOL | HALMAT | Hal/S |
| Halt and Catch Fire | halting problem | Hamilton |
| Hamiltonian cycle | Hamiltonian path | Hamiltonian problem |
| Hamiltonian tour | Hamilton's problem | hammer |
| Hamming code | Hamming distance | Hamming, Richard |
| hamster | Han character | HAND |
| hand cruft | Handel | hand hack |
| Hand-held Personal Computer | handle | handoff |
| handover | hand-roll | handshake |
| handshaking | handwave | hang |
| hanja | Hanoi | Han Unification |
| hanzi | happily | Happy |
| haptic interface | haptics | haque |
| hard boot | hard-coded | hardcopy |
| hard crash | hard disk | hard disk drive |
| hard drive | hard link | hard linking |
| hard sector | hardware | Hardware Abstraction Layer |
| hardware circular buffer | Hardware Description Language | hardware handshaking |
| hardware register | hardwarily | hard-wired |
| Harris Semiconductor Ltd. | Harvard architecture | Harvard Graphics |
| Harvard Mark II Machine | Harvest | Harvest C |
| hash | hash bucket | hash character |
| hash coding | hash collision | hash function |
| hashing | hash table | Haskell |
| Haskell B | Haskell Curry | Haskell User's Gofer System |
| HASL | HASP | has the X nature |
| hat | hate-driven development | Hayes |
| Hayes-compatible | Haze | HBOOK |
| hc | HC-900 | HCF |
| HCI | HCLP | HCPRVR |
| HCS | HD | HD6309 |
| HDA | HDC | HDD |
| HDF | HDFL | HDL |
| HDLC | HDM | HDMI |
| HDSL | HDTV | hdx |
| Head Disk Assembly | header | Head Normal Form |
| head normalisation theorem | heads down | head-strict |
| heap | heartbeat | heatseeker |
| heat sink | heat slug | heavy metal |
| heavyweight | heavy wizardry | Hebbian learning |
| heisenbug | Helen Keller mode | Helix |
| hello | hello packet | hello, sailor! |
| hello, world | HELP | Helvetica |
| henry | HENSA | HEP |
| HEPDB | HEPiX | HEPnet |
| HEPVM | HEQS | HERA |
| HERAKLIT | here document | Herman Hollerith |
| Hermes | Hesiod | heterogeneous |
| heterogeneous network | heterogenous | heuristic |
| heuristics testing | Hewlett-Packard | Hewlett-Packard Graphics Language |
| Hewlett-Packard Interface Bus | Hewlett Packard Multi Processing Executive | Hewlett Packard Precision Architecture |
| Hewlett-Packard Visual Engineering Environment | hex | hexadecimal |
| hexidecimal | hexit | HFC |
| HHCP | HHOJ | HHOK |
| HHOS | hi | HIBOL |
| HID | hidden flag | hierarchical database |
| Hierarchical Data Format | Hierarchical Design Methodology | hierarchical file system |
| Hierarchical Music Specification Language | hierarchical navigation | Hierarchical Object Oriented Design |
| hierarchical routing | hierarchy | Higgs Bugson |
| high bit | High bit-rate Digital Subscriber Line | high colour |
| High-Definition Multimedia Interface | high density | Higher Education National Software Archive |
| higher-order function | higher-order macro | High-level Data Link Control |
| high-level language | high memory area | high moby |
| High Performance Computing and Communications | High Performance File System | High Performance Fortran |
| High Performance Parallel Interface | High Performance Routing | High Performance Serial Bus |
| High Speed Circuit Switched Data | High Speed Connect | High-speed Net Connect |
| high speed serial interface | High Voltage Differential | HIGZ |
| hill climbing | HiLog | HIMEM |
| Hindenbug | hing | HINT |
| HiPAC | HIPPI | hiragana |
| hirsute | HISTORIAN | history |
| hit | Hitachi 6309 | Hitachi HD64180 |
| HITL | hit rate | hk |
| HL7 | HLISP | HLL |
| HLLAPI | hlp | hm |
| HMA | HMAC | hmake |
| HMD | HMP | HMSL |
| HMTL | hn | HNAP |
| HNAP1 | HNC | HO |
| Hoare powerdomain | Hobbit | hobbit |
| hog | HOL | HOL-88 |
| HOL-90 | hole | hole model |
| Hollerithabetical order | Hollerith, Herman | Hollywired |
| HOL-UNITY | holy wars | home |
| home box | home keys | home machine |
| Home Network Administration Protocol | home page | Home Phoneline Networking Alliance |
| HomePNA | home row keys | homogeneous |
| homogenous | homomorphism | honeypot |
| Honeywell | Honeywell-800 Business Compiler | HOOD |
| HOOK | hook | hop |
| Hope | Hope+ | Hope+C |
| Hopfield model | Hopfield network | horizontal application |
| horizontal encoding | horizontal loop combination | horizontal microcode |
| horizontal scan rate | horizontal tabulation | Horn clause |
| hose | hosed | HOS-STPL |
| host | host adapter | Host Command Facility |
| Host Control Interface | host-host layer | hosting |
| hostname | host number | hosts file |
| Hot Fix | HotJava | Hotline |
| Hotline Communications Ltd. | Hotline Connect | hotlink |
| hotlist | Hotmail | hot spot |
| Hot Standby Routing Protocol | Hot Swapable Routing Protocol | Hot Swappable Routing Protocol |
| hot swapping | HOTT | house wizard |
| Houston Automatic Spooling Program | Howe, Denis | how many nibbles are in a byte |
| how many nibbles in a byte | HP | hp2ps |
| H/PC | HPCC | HPcode |
| HPCode-Plus | HPF | HPFS |
| HP-GL | HP-GL/2 | HP-IB |
| HPL | HPLOT | HP-MPE |
| HP-PA | HPPI | HPR |
| HP-SUX | HP-UX | HP VEE |
| hqx | hr | href |
| hs | HSB | HSC |
| HSCSD | HSL-FX | HSM |
| HSRP | HSSI | HSV |
| HT | ht | HTH |
| HTLM | HTML | HTML+ |
| htmlcommentbox.com | HTTL | HTTP |
| HTTP/1.0 | HTTP cookie | HTTPd |
| HTTP proxy server | HTTPS | HTTP server |
| hu | hub | Hubnet |
| hubs | Hudson | hue |
| hue, saturation, brightness | hue, saturation, value | huff |
| Huffman | Huffman code | Huffman coding |
| Huffman encoding | Hugh Loebner | HUGO |
| HUGS | Human-Computer Interaction | Human-Computer Interface |
| Human Interface Device | Human Interface Technology Laboratory | humanist technology |
| humma | humor | humour |
| hung | Hungarian Notation | Hungry Programmers |
| hungry puppy | Hungry ViewKit | hungus |
| Hunt the Wumpus | Hurd | HVD |
| Hybrid | Hybrid Fiber Coax | hybrid multiprocessing |
| hybrid testing | hydra code | hydrofluorocarbon |
| HyperBase | Hyper-C | HyperCard |
| hypercube | Hyperion | hyperlink |
| Hyper-Man | hypermedia | HyperNeWS |
| Hyperscript | hyperspace | HyperSPARC |
| Hyperstrict | HyperTalk | hypertext |
| hypertext link | Hypertext Markup Language | Hypertext Transfer Protocol |
| HyperText Transmission Protocol, Secure | hypervisor | hyperware |
| hypotenuse | hysterical reasons | Hytelnet |
| HyTime | i18n | I2O |
| i386 | i486 | i487 |
| i860 | IA | IA32 |
| IAB | IAD | IAL |
| IAM | IANA | IANAL |
| IAP | I-APL | IAR |
| IAS | IAW | IAYSDAH |
| IBEX | IBM | IBM 1130 |
| IBM 1403 | IBM 1620 | IBM 1710 |
| IBM 2741 | IBM 3270 | IBM 360 |
| IBM 370 | IBM 370ESA | IBM 370XA |
| IBM 3720 | IBM390 | IBM 650 |
| IBM 700 series | IBM 701 | IBM 704 |
| IBM 7040 | IBM 705 | IBM 709 |
| IBM 7090 | IBM 7094 | IBM 801 |
| IBM compatible | IBM Customer Engineer | IBM discount |
| IBM PC | IBM PC AT | IBM PCjr |
| IBM PC XT | IBM System/36 | IBM Systems Engineer |
| IBM zSeries | Ibpag2 | Iburg |
| IC | ICA | ICAM |
| ICANN | I-CASE | ICBM address |
| ICE | icebreaker | ICES |
| ICETRAN | ICI | ICL |
| ICMP | ICMP Router Discovery Protocol | I-Comm |
| iCOMP | Icon | icon |
| Icon-Based Parser Generation System 2 | Iconicode | ICONIX Software Engineering, Inc. |
| IC-Prolog | IC Prolog II | ICQ |
| ICSI | ICT | ICW |
| ICWS | Id | id |
| I-D | ID10T | IDAMS |
| IDD | IDE | IDEA |
| IDEAL | ideal | Idealized CSP |
| Idealized Instruction Set | IDEF | IDEF0 |
| idempotent | identifier | ideogram |
| I didn't change anything! | idk | IDL |
| IDMS | IDMSX | Id Nouveau |
| IDOL | IDS/I | IDSN |
| id Software | IDSS | IE |
| ie | IEC | IEC 559 |
| IEEE | IEEE 1076 | IEEE 1394 |
| IEEE 488 | IEEE 754 | IEEE 802 |
| IEEE 802.1 | IEEE 802.2 | IEEE 802.3 |
| IEEE 802.3u | IEEE 802.3z | IEEE 802.4 |
| IEEE 802.5 | IEEE Computer Society | IEEE Floating Point Standard |
| IEEE Standard 1149.1 | IEF | IEN |
| IEPG | IESG | IETF |
| IF1 | IF2 | IFAC |
| IFC | ifdef out | IFDL |
| IFF | iff | IFIP |
| IFP | IFS | IFX |
| If you want X, you know where to find it. | IGC | IGES |
| IGL | IGMP | IGP |
| IGPL | IGS | IGU |
| IHS | IHV | IIcx |
| IIDMS/R | IIL | IINREN |
| IIOP | IIR | IIRC |
| IIS | IIT | IITF |
| IITRAN | il | ILBM |
| ILF | ILIAD | I-Link |
| ILISP | ill-behaved | ILLIAC |
| Illiac IV | Illinois Functional Programming | ILOC |
| Ilog Solver | iMac | image |
| image formats | image map | image processing |
| image recognition | imaging | Imago Europe plc |
| Imago On-line | imake | IMAO |
| IMAP | imc | IMD |
| IMHO | IML | immediate version |
| Imminent Death Of The Net Predicted! | IMNSHO | IMO |
| IMP | impact printer | impedance |
| imperative | imperative language | imperative programming |
| Imperial College of Science, Technology and Medicine | Imperial Software Technology | IMPlementation language |
| implication | implicit parallelism | implicit type conversion |
| implies | imply | import |
| imprecise probability | IMProved Mercury autocode | IMR |
| IMS | IMS 6100 | Imsai |
| IMS/Data Base | IMS/Data Communications | IMSE |
| IMTC | in | Ina Jo |
| InARP | in-band signaling | in-band signalling |
| inc | incantation | include |
| include war | inclusive | incomparable |
| incremental analysis | incremental backup | incremental constraint solver |
| Incremental Prototyping Technology for Embedded Realtime Systems | increment operator | indent |
| indentation | indent style | Independent Computing Architecture |
| Independent Logical File | Independent Verification and Validation | index |
| Index Data | IndexedDB | Indexed Sequential Access Method |
| index.htm | index.html | index register |
| indices | indirect address | indirect addressing |
| indirection | indirect jump | induction |
| inductive inference | inductive relation | Industrial Programming, Inc. |
| Industrial Robot Language | Industry Standard Architecture | inetd |
| inews | infant mortality | infeasible path |
| inference | inference engine | inference rule |
| infimum | infinite | Infinite Impulse Response |
| infinite loop | Infinite Monkey Theorem | infinite set |
| infinity | infix notation | infix syntax |
| inflate | INFN | Infobahn |
| Info BASIC | infobot | Informatics Corporation |
| information | Information Algebra | Information and Communication Technology |
| Information Appliance | Information Builders | Information Engineering Facility |
| information highway | Information Infrastructure Task Force | Information Innovation |
| information island | Information Management | Information Management System |
| information overload | Information Processing Language | Information Resource Management |
| information superhighway | Information Systems Factory | information technology |
| information technology governance | Information Technology Infrastructure Library | Informix |
| InfoSeek | InfoStreet, Inc. | infotainment |
| InfoWord Office | infrared | Infrared Data Association |
| infrastructure | Inglish | INGRES |
| inheritance | initgame | initialise |
| Initial Microprogram Load | Initial Operational Test and Evaluation | Initial Program Load |
| Initial Program Loader | initiator | injection |
| inkjet printer | ink printer | inline |
| inline element | inline image | INMOS transputer |
| inner class | inner join | inner product |
| InnovAda | inode | in-order traversal |
| inout | IN point | Inprise Corporation |
| Input | input | input device |
| input/output | input/output redirection | inquiry/response system |
| INRIA | insanely great | insertion sort |
| INSIGHT | Insignia Solutions, Inc. | inspection |
| installable file system | installed user base | installer |
| instance | instance variable | instantiate |
| instantiation | Institute for Global Communications | Institute of Electrical and Electronics Engineers, Inc. |
| Institut National de Recherche en Informatique et Automatique | instruction | Instruction Address Register |
| instructional technology | instruction mnemonic | instruction prefetch |
| instruction register | instruction scheduling | instruction set |
| instruction set architecture | Instruction Set Processor | instrument |
| int | INTCODE | integer |
| Integer SPECbaserate | Integer SPECbaseratio | Integer SPECrate |
| Integer SPECratio | integrated circuit | Integrated Database Management System |
| Integrated Development Environment | Integrated Drive Electronics | Integrated Information Technology |
| Integrated Modelling Support Environment | Integrated Project Support Environment | Integrated Services Digital Network |
| Integrated Systems Architecture | Integrated Systems Laboratory | integration |
| integration testing | integrity | integrity constraint |
| Intel | Intel 4004 | Intel 4040 |
| Intel 486 | Intel 486DX | Intel 486SX |
| Intel 487SX | Intel 8008 | Intel 80186 |
| Intel 80188 | Intel 80286 | Intel 80386 |
| Intel 80386DX | Intel 80386SX | Intel 8048 |
| Intel 80486 | Intel 8051 | Intel 8080 |
| Intel 8085 | Intel 8086 | Intel 8088 |
| Intel 80x86 | Intel 8751 | Intel Comparative Microprocessor Performance index |
| Intel Corporation | IntelDX4 | Intel i960 |
| INTELLECT | intellectual property | intelligent backtracking |
| intelligent database | Intelligent Input/Output | Intelligent I/O |
| intelligent key | intelligent terminal | IntelliMouse |
| Intel Literature Sales | Intelsat | Intel x86 |
| intensional | Intent to Package | INTERACTIVE |
| interactive | Interactive and Batch EXecutive | Interactive CourseWare |
| Interactive Data analysis Language | Interactive Data Entry/Access | Interactive Data Language |
| Interactive Development Environment | Interactive Development Environments | Interactive Software Engineering |
| Interactive System Productivity Facility | Interactive Voice Response | Interagency Interim National Research and Education Network |
| InterBase | INTERCAL | Interchange File Format |
| INTERCOM | Interdata | Interest Group in Pure and Applied Logics |
| interesting | inter-exchange carrier | interface |
| interface analysis | Interface Architect | Interface Definition Language |
| Interface Description Language | Interface Message Processor | Interior Gateway Protocol |
| interlace | interlaced image | interlacing |
| Interlan | Interleaf | interleave |
| interleaving | INTERLINK | Interlisp |
| Interlisp-10 | Interlisp-D | Intermedia |
| Intermedia Interchange Format | intermediate code | Intermediate Distribution Frame |
| Intermediate Programming Language | Intermediate System | Intermediate System-Intermediate System |
| intermercial | Intermetrics, Inc. | intermodulation distortion |
| internal field separators | Internal Translator | International Algebraic Language |
| International Atomic Time | International Business Machines | International Computers Limited plc |
| International Core War Society | International Data Encryption Algorithm | International Electrotechnical Commission |
| International Federation for Information Processing | International Function Point Users Group | internationalisation |
| internationalization | International Multimedia Teleconferencing Consortium | International Olympiad in Informatics |
| International Organisation for Standardisation | International Organization for Standardization | International Phonetic Alphabet |
| International Programmable Airline Reservation System | International Smalltalk Association | International Standard |
| International Telecommunications Union | International Traffic in Arms Regulation | Internaut |
| Internet | Internet Access Provider | Internet Adapter |
| Internet address | internet address | Internet Architecture Board |
| Internet Assigned Numbers Authority | Internet backbone | Internet Chess Server |
| Internet Control Message Protocol | Internet Corporation for Assigned Names and Numbers | Internet-Draft |
| Internet Engineering and Planning Group | Internet Engineering Steering Group | Internet Engineering Task Force |
| Internet Experiment Note | Internet Explorer | Internet Express |
| Internet Foundation Classes | Internet Go Server | Internet Group Management Protocol |
| Internet Information Server | Internet Inter-ORB Protocol | Internet Message Access Protocol |
| Internet Monthly Report | Internet Network Information Center | internet number |
| Internet Open Trading Protocol | Internet Protocol | Internet Protocol Control Protocol |
| Internet Protocol version 4 | Internet Protocol version 6 | Internet provider |
| Internet Public Library | Internet Registry | Internet Relay Chat |
| Internet Research Steering Group | Internet Research Task Force | Internet Security Association and Key Management Protocol |
| Internet Server Application Programming Interface | Internet Service Provider | Internet Society |
| Internet Telephony | Internet Telephony Service Providers | internetworking |
| Internetwork Packet eXchange | Internet Worm | Internex On-Line |
| InterNIC | interoperability | interoperable database |
| inter-packet gap | interpolation | Interpress |
| interpreted | interpreter | Interpretive Menu Processor |
| Inter-process Communication | interrupt | interrupt handler |
| interrupt list | interrupt priority level | interrupt request |
| interrupts | Intersil 6100 | Intersil 6120 |
| interstitial | Intertec | interupt |
| interval | InterViews | interworking |
| intranet | Intrinsics | introspection |
| introspection annotation | Intrusion Countermeasure Electronics | Intrusive Testing |
| Intuition | intuitionism | intuitionistic logic |
| intuitionistic probability | intuitionist logic | invariant |
| inverse | Inverse Address Resolution Protocol | inverse comment convention |
| inverted index | invoking a method | InWorld VR |
| IO | io | I/O |
| IOI | Iomega Corporation | I-OOA |
| I/O redirection | IOS | Iota |
| IOT&E | IOW | IP |
| IPA | iPad | IP address |
| IPARS | I-Pay | IPC |
| ipconfig | IPCP | IPE |
| Iperf | IPL | IP next generation |
| IPng | IP number | IPS |
| IPSE | IPsec | IPT |
| IP Telephony | IPv4 | IPv6 |
| IPX | IPXCP | IQ |
| iq | IQL | IR |
| ir | IrBUS | IRC |
| ircop | IRC penis war | IrDA |
| IrDA-C | IrDA Control | IrDA Data |
| IRDATA | IRDP | IRDS |
| IRET | IRIS | Iris |
| IRISA | IRIS Explorer | IRIX |
| IRL | IRM | iron |
| Iron Age | iron box | Ironman |
| ironmonger | IRQ | irrational number |
| irrefutable | IRSG | IRTF |
| IRUS | Irvine Dataflow | Irvine Research Unit in Software |
| IS | is | IS-11172 |
| IS-13818 | ISA | Isabelle |
| Isabelle-92 | Isabelle-93 | ISA bus |
| ISAKMP | ISAM | ISAPI |
| ISAPI filter | ISBL | ISDE |
| ISDN | ISE | ISEE |
| I see no X here. | ISETL | ISF |
| ISINDEX | ISIS | IS-IS |
| ISL | ISLisp | ISMAP |
| ISO | ISO 10646 | ISO 3166 |
| ISO 639-1 | ISO 639-2 | ISO 8072 |
| ISO 8073 | ISO 8208 | ISO 8326 |
| ISO 8327 | ISO 8485 | ISO 8613 |
| ISO 8649 | ISO 8650 | ISO 8805 |
| ISO 8807 | ISO 8822 | ISO 8823 |
| ISO 8825 | ISO 8859 | ISO 8859-1 |
| ISO 8879 | ISO 9000 | ISO 9072 |
| ISO 9660 | ISO 9735 | ISOC |
| ISO C | isochronous | isochronous transfer |
| ISODE | ISO Development Environment | ISO/IEC 10646-1 |
| ISO/IEC 26300 | isolated | ISO Latin 1 |
| isometric joystick | isometry | isomorphic |
| isomorphism | isomorphism class | ISO Pascal |
| ISO seven layer model | ISP | ISPBX |
| ISPF | ISPL | ISPS |
| IST | ISTAR | ISTM |
| ISV | ISWIM | IT |
| it | ITAR | Iterated Function System |
| iteration | iterative deepening | iterator |
| Iternet | IT governance | ITHACA |
| ITIL | ITP | ITS |
| it's a feature | ITSP | ITU |
| ITU-T | ITU-T X.680 | ITU X.209 |
| Ivan | Ivan Sutherland | Iverson's Language |
| IVR | ivs | IVTRAN |
| IV&V | IVY | IWay |
| IWBNI | IXC | IXI Limited |
| IXO | IYFEG | J |
| J2EE | J2ME | J2SE |
| J3 | J73 | jabber |
| JACAL | jaccl | jack in |
| Jack Kilby | Jackson method | Jacquard, Joseph-Marie |
| Jacquard loom | JAD | JADE |
| Jade | jadeTeX | JAffer's Canonical ALgebra |
| jaggies | JaM | jam |
| James Clark | James' DSSSL Engine | James Gosling |
| James H. Clark | JAM Programming Language | JANET |
| JANET IP Service | Janus | japh |
| jar | jargon | Jargon File |
| Java | Java 2 | Java 2 Platform |
| Java 2 Platform, Enterprise Edition | Java 2 Platform, Micro Edition | Java 2 Platform, Standard Edition |
| Java 2 SDK | Java 2 Software Development Kit | Java archive |
| JavaBeans | Java Community Process | Java Database Connectivity |
| Java Development Kit | Java Message Service | Java Native Interface |
| Java Open Language Toolkit | Java Remote Method Protocol | Java Run-Time Environment |
| JavaScript | JavaScript Object Notation | Java servelet |
| JavaServer Faces | JavaServer Pages | Java servlet |
| Java Servlet Development Kit | Java Virtual Machine | Java VM |
| JAZ | Jaz | Jaz Drive |
| JAZELLE | JBIG | JBOD |
| JBOPS | jc | JCL |
| JCOOL | JCP | JCS-13 |
| JDBC | JDK | JEAN |
| Jean E. Sammet | Jean-Maurice-Émile Baudot | JEDR |
| Jef Raskin | Jenga Code | Jenkins |
| Jerry Sussman | JES | JES2 |
| JES3 | JFCL | JFDI |
| JFET | JFGI | JFIF |
| jiffy | Jim Clark | Jini |
| JIPS | JIT | jitter |
| JK flip-flop | jm | J.M.E. Baudot |
| JMHO | JMS | JNI |
| JNT Association | jo | job |
| Job Control Language | Job Entry System | Jobs |
| job security | jock | joe |
| joe code | John Atanasoff | John Gilmore |
| John Mauchly | John McCarthy | Johnniac |
| JOHNNIAC Open Shop System | John Ousterhout | John Tukey |
| John Vincent Atanasoff | John von Neumann | join |
| Joint Academic NETwork | Joint Bi-level Image Experts Group | Joint Photographic Experts Group |
| Joint Technical Committee | Joint Test Action Group | Joliet |
| jolix | JOLT | Jonathan's Own Version Of Emacs |
| Jon Postel | JOOP | Joseph-Marie Jacquard |
| Josephson Junction | JOSS | Jossle |
| journal | journalling | jove |
| JOVIAL | Joy | Joyce |
| joystick | Joy, William | jp |
| JPEG | JPEG-2000 | JPEG File Interchange Format |
| jpg | JPL | JPLDIS |
| J. Presper Eckert | J. Random | J. Random Hacker |
| JRE | JRL | JRMP |
| JS | JSA | JSDK |
| JSF | JSON | JSP |
| JSTL | JTAG | JTB |
| JTC | JTC1/SC24 | JTS |
| juggling eggs | Jughead | juice jacking |
| jukebox | jump | jumper |
| jump off into never-never land | jump trace buffer | Junction FET |
| Junction Field Effect Transistor | Juno | jupiter |
| Just a Bunch Of Disks | just-in-time | JVM |
| Jym | K | K5 |
| K56flex | K6 | K7 |
| KA9Q | KADS | kahuna |
| Kaleidoscope | Kali | kamikaze packet |
| Kamin's interpreters | kana | kangaroo code |
| kanji | KAOS | KAP |
| Karel | katakana | Katmai New Instructions |
| KB | KBMS | kbps |
| KBS | KC-85/1 | KC85/2 |
| KC85/3 | KC85/4 | KCL |
| ke | KEE | keep-alive |
| Keldysh Institute of Applied Mathematics | ken | Kent Applicative Operating System |
| Ken Thompson | Kent Recursive Calculator | Kerberos |
| Kermit | kern | kernal |
| kernel | Kernel Parlog | kernel style |
| Kernel User Interface Package | kerning | Kevo |
| key | keyboard | Keyboard Commando |
| keyboard plaque | Keyboard Send Receive | Keyboard Video Mouse |
| Keyed-Hashing Message Authentication | Keyed Sequenced Data Set | key escrow |
| key field | key frame | keylogger |
| KeyNote Software | keypad | keypal |
| KeySpell | keyword | keyword in context |
| KFX | kg | kgbvax |
| kh | Khornerstone | Khwarizmi |
| ki | kibibyte | KIBO |
| kiboze | kick | kicking dead whales down the beach |
| Kid | KIDASA Software | killer micro |
| killer poke | kill file | kilo- |
| kilobaud | kilobit | kilobits per second |
| kilobyte | kiloflops | kiosk |
| KIPS | KIS | KISS |
| KISS Principle | kit | KL0 |
| KL1 | Klamath | KLB |
| Kleene closure | Kleene star | Kleene, Stephen Cole |
| Klerer-May System | KLOC | klone |
| KL-ONE | kludge | kluge |
| kluge around | km | KMODEL |
| KMS | kn | knapsack problem |
| KNI | Knights of the Lambda-Calculus | knowbot |
| Knowbot Information Service | knowledge | Knowledge Analysis and Design System |
| knowledge base | knowledge-based system | knowledge level |
| Knowledge Management System | Knowledge Query and Manipulation Language | knowledge representation |
| Knowledge Sharing Effort | Knowledge Systems Laboratory | Known Lazy Bastard |
| Knuth | Kodak | Kohonen |
| KOMPILER | Konrad Zuse | Korf, Richard |
| Korn Shell | kp | KQML |
| KR | kr | K&R |
| KRC | K&R C | kremvax |
| KRL | KRS | K&R style |
| KRYPTON | ksh | KSL |
| KSR | KTH | kthx |
| KUIP | Kungliga Tekniska Högskolan | KUTGW |
| Kvatro Telecom AS | Kvikkalkul | KVM |
| kw | KWIC | ky |
| Kyoto Common Lisp | kyrka | kz |
| L0 | L0pht | l10n |
| L1 cache | L2 cache | L2CAP |
| L2TP | L6 | la |
| label | label edge router | Label Forwarding Information Base |
| label switched path | label switching | Label Switching Router |
| Lab for Computer Science | Laboratoire lorrain de recherche en informatique et ses applications | Laboratory INstrument Computer |
| Laboratory Virtual Instrument Engineering Workbench | LaborNet | Labtech Notebook |
| LabVIEW | Lace | lace card |
| ladder logic | LADY | lag |
| Lakota | LALR | lalr.ss |
| Lambada-Calculus | LAMBDA | lambda abstraction |
| lambda-calculus | lambda expression | lambda lifting |
| LambdaMOO | Lambda Prolog | lamer |
| LAMINA | lamp-post error | LAN |
| LAN administrator | LANCE | language |
| language-based editor | language code | Language for Communicating Systems |
| Language for the On-Line Investigation and Transformation of Abstractions | Language H | language lawyer |
| Language Of Temporal Ordering Specification | Language Sensitive Editor | language-sensitive editor |
| languages of choice | Laning and Zierler | Lan Kanal Adapter |
| LANL | Lan Manager | LANtastic |
| LAP | LAP4 | LAPB |
| LAPD | LAPM | LAPSE |
| laptop | laptop computer | LaQuey |
| Larch | Larch/C++ | LARCH/CLU |
| Large Installation Systems Administration | Larry Wall | LART |
| larval stage | lase | laser |
| laser printer | Lasherism | last call optimisation |
| last-in first-out | LAT | latch |
| latency | LaTeX | Latin 1 |
| lattice | LAU | laundromat |
| LAURE | LAVA | law |
| LAWN | Lawrence Livermore Labs | Lawrence Livermore National Laboratory |
| LAX | layer | layer 1 |
| layer 2 | layer 3 | layer 4 |
| layer 5 | layer 6 | layer 7 |
| Layer Two Tunneling Protocol | laziness | lazy evaluation |
| lazy list | Lazy SML | lazy sml2c |
| Lazy Standard ML | lb | LBA |
| LBE | LBL | LBX |
| lc | LCC | lcc |
| LCD | LCF | LCL |
| lclint | LCP | LCS |
| ld | LDAP | LDB |
| LDL | LDL1 | LDP |
| LDT | LE/1 | leading |
| LEAF | leaf | Leaf Distribution Limited |
| leaf site | League for Programming Freedom | leak |
| leaky heap | Lean | LEAP |
| leapfrog attack | leap second | learning curve |
| leased line | least fixed point | least recently used |
| least significant bit | least upper bound | leaves |
| LEC | LECOM | LED |
| LEDA | Leda | LED page printer |
| LED printer | leech | leet |
| left arrow | left brace | left bracket |
| left join | left outer join | left parenthesis |
| LeFun | legacy | legacy code |
| legacy software | legacy system | legal |
| legalese | LEGOL | Le-Lisp |
| lemma | Lempel-Ziv compression | Lempel-Ziv Welch compression |
| Lenat, Doug | lenient evaluation | LEO |
| Leo | LER | LERP |
| less than | LessTif | let floating |
| letterbomb | level 1 cache | level 2 cache |
| LEVEL5 OBJECT | level one cache | level-sensitive scan design |
| level two cache | Lex | lexeme |
| lexer | lexical analyser | lexical analysis |
| lexical scope | lexical scoping | lexiphage |
| LF | LFIB | LG |
| LGDF | LGEN | LGN |
| lha | LHARC | lhs |
| li | Liana | Liar |
| liar paradox | lib | libg++ |
| library | Library of Efficient Data types and Algorithms | librery |
| LIDO | LiE | LIF |
| life | life-cycle | LIFIA |
| LIFO | lifted domain | LIGHT |
| light client | light-emitting diode | light-emitting resistor |
| light pen | light pipe | light-weight |
| Lightweight Directory Access Protocol | light-weight process | like kicking dead whales down the beach |
| like nailing jelly to a tree | like this | Lila |
| Lilith | LILLIAC IV | lilo |
| Lily | LIMDEP | LIM EMS |
| LIMP | Linc | Lincoln Reckoner |
| LINCtape | Linda | LindaLISP |
| line | line 666 | linear address space |
| linear argument | linear assignment | linear function |
| Linear Graph Notation | linear logic | linear map |
| linear programming | linear space | linear topology |
| linear transformation | linear type | line conditioning |
| line eater | line editor | line feed |
| line noise | line printer | line probing |
| lines of code | lines per minute | line starve |
| Lingo | LINGOL | link |
| Link Access Procedure on the D channel | Link Access Protocol Balanced | Link Access Protocol for Modems |
| linkage editor | Link Control Protocol | link-dead |
| link editor | linked list | linker |
| link farm | link loader | link rot |
| links | Link State Routing Protocol | LINPACK |
| lint | Linux | Linux Documentation Project |
| Linux Loader | Linux Network Administrators' Guide | Linux User Group |
| lion food | Lions Book | LIPL |
| liquid crystal display | LIS | LISA |
| Liskov, Barbara | Liskov substitution principle | Lisp |
| LISP 1 | LISP 1.5 | LISP 2 |
| LISP70 | LISP A | LISP Extended Algebraic Facility |
| Lispkit | Lispkit Lisp | Lisp-Linda |
| Lisp Machine | LISP Machine LISP | Lisp Object-Oriented Programming System |
| LISP, Objects, and Symbolic Programming | Lisptalk | LispView |
| list | list comprehension | List Enhanced |
| listless | Listproc | lists |
| Listserv | Liszt | lite |
| literal | literate programming | literature |
| LITHE | lithium lick | LitProg |
| LITTLE | little-endian | Little Smalltalk |
| live data | Live Free Or Die! | livelock |
| LiveScript | liveware | lk |
| LKA | LL | LLC |
| LLGen | LLM3 | LLNL |
| LLP | LM3 | LMAO |
| LMDS | lmgtfy.com | LML |
| LM-Prolog | LMTP | LNF |
| LO | L&O | load |
| load balancing | load-bearing printf | lobotomy |
| LOC | local area network | Local Area Terminal |
| local bus | locale | local echo |
| local exchange carrier | localisation | localised |
| locality | local loop | local loopback addresses |
| Local Mail Transfer Protocol | Local Multipoint Distribution System | locals |
| Local Shared Resources | LocalTalk | local variable |
| location | Loch Ness Monster Bug | locked and loaded |
| locked up | lock-in | Locus |
| Loebner Prize | log | logarithmus dualis |
| LogC | logic | logical |
| logical address | Logical Block Addressing | logical complement |
| Logical Interchange Format | Logical Link Control | Logical Link Control and Adaptation Protocol |
| logical relation | logical shift | logical shift left |
| logical shift right | Logical Unit | Logical Unit 6.2 |
| Logical Unit Number | logic bomb | Logic Design Language |
| logic emulator | Logic for Computable Functions | logic gate |
| logic programming | Logic Replacement Technology | logic variable |
| LOGIN | log in | LOGISCOPE |
| Loglan | Loglan'82 | Loglan-88 |
| LOGLISP | LOGO | log off |
| LOGOL | logon | log out |
| Lojban | LOL | LOLITA |
| Lolli | LOM | longitudinal parity |
| Longitudinal Redundancy Check | LOOK | Look Ahead Left-to-right parse, Rightmost-derivation |
| Look ahead LR | look and feel | Looking Glass |
| LOOKS | loop | loop-and-a-half |
| loop combination | loop fusion | LOOPN |
| LOOPS | loop through | loose bytes |
| LOP | lord high fixer | Lore |
| Lorem ipsum | Lorenz attractor | LORIA |
| lose | loser | losing |
| loss | lossage | lossless |
| lossless audio compression | Lossless Predictive Audio Compression | lossy |
| lossy audio compression | lost in the noise | lost in the underflow |
| LOTIS | LOTOS | lots of MIPS but no I/O |
| Lotus 1-2-3 | Lotus Development Corporation | Lotus Notes |
| Lotus Notes Formula Language | LotusScript | loudspeaker |
| Lout | love | low-bandwidth |
| Low Bandwidth X | low earth orbit | Lower Layer Protocol |
| lower set | Low Insertion Force | LOWL |
| low-level language | low pass filter | Low Voltage Differential |
| LPAC | LPC | LPF |
| LPG | LPI | LPL |
| lpm | LP MUD | lpr |
| LPS | lp spooler | LPT |
| lr | LRC | LRLTRAN |
| LRU | ls | LSA |
| LSB | LSE | LSL |
| LSML | L-Soft | LSP |
| LSR | LSSD | LSYD |
| lt | LT-2 | LTL |
| LTPS | LTR | LTR3 |
| lu | LU6.2 | lub |
| Lubarsky's Law of Cybernetic Entomology | Lucent Technologies | LUCID |
| Lucid Emacs | Lucinda | Lucy |
| LUG | luminance | lump uncurrying |
| LUN | lunatic fringe | Lund Simula |
| Lund Software House AB | lurk | lurker |
| lurking | luser | Luser Attitude Re-adjustment Tool |
| LUSTRE | lv | lvalue |
| LVD | LWP | ly |
| LYaPAS | Lycos | lylafklc |
| lynix | LYNX | Lynx |
| LynxOS | Lynx Real-Time Systems | LYRIC |
| LZ77 compression | LZ78 compression | LZ compression |
| lzexe | lzh | LZH compression |
| LZW compression | M | m2 |
| M2toM3 | M3 | m4 |
| M5 | ma | MAC |
| Mac | Mac-1 | MAC-360 |
| MACA | MAC address | MACAnalyst |
| Macaulay | MacBinary | MACDesigner |
| macdink | MACE | Mach |
| Machiavelli | machinable | machine |
| machine code | machine cycle | MAchine INdependent SAIL |
| machine instruction | machine language | machine learning |
| Mach Interface Generator | machoflops | Mac II |
| Mac IIcx | Macintosh | Macintosh Common Lisp |
| Macintosh file system | Macintosh II | Macintosh IIcx |
| Macintosh Operating System | Macintosh user interface | Macintoy |
| Macintrash | MACL | MacLisp |
| MacMinix | Mac OS | Mac OS X |
| Mac Playmate | MacPPP | MACRO |
| macro | macro- | macrology |
| Macromedia | macro preprocessor | Macro SAP |
| macrotape | MACSYMA | MacTCP |
| MacX | MAD | Mad/1 |
| Madaline | MADCAP | MADTRAN |
| maggotbox | MAGIC | magic |
| magic bullet | magic cookie | magic number |
| Magic Paper | magic smoke | Magic Switch Story |
| Magma | Magma2 | MagmaLISP |
| magnetic disk | Magnetic Ink Character Recognition | magnetic stripe |
| magnetic tape | magnetic tape drive | magneto-optical disk |
| magneto-optical drive | magnetostrictive delay line | MAGNUM |
| Magritte | mail | Mail Application Programming Interface |
| mail bomb | mailbox | mail bridge |
| mail exchanger | Mail Exchange Record | mail exploder |
| mail filter | mail gateway | mail hub |
| mailing list | mail merge | mail path |
| mail server | Mail Transfer Agent | Mail Transport Agent |
| mail user agent | Mail Users' Shell | main |
| MAINBOL | Main Distribution Frame | mainframe |
| mainframe programmer/analyst | main loop | main memory |
| MAINSAIL | main store | maintainer |
| maintainer script | maintenance | Maisie |
| major delivery | Majordomo | major release |
| Make | Makedoc | makefile |
| Maker Interchange Format | MAL | Malamud |
| MALI | mall | malloc |
| malware | malware as a service | MAN |
| man | managed code | management |
| Management Information Base | Management Information System | manager/html |
| Manager of Business Applications | Manchester Autocode | Manchester encoding |
| Mandala | Mandelbrot, Benoit | Mandelbrot set |
| mandelbug | Mandy Rice-Davis Applies | manged |
| mangle | mangler | mango |
| MANIAC | man-in-the-middle attack | man page |
| MANTIS | mantissa | manual testing |
| Manufacturer Resource Planning | Manufacturers Automation Protocol | Manufacturing Automation Protocol |
| manularity | Many Integrated Core Architecture | MAO |
| MAP | map | MAPI |
| Maple | mapping | marbles |
| Marc Andreessen | Margaret Hamilton | marginal |
| Marginal Hacks | Maril | marketroid |
| Mark I | Markov | Markov chain |
| Markov model | Markov process | Markowitz |
| mark-sweep garbage collection | markup | Marlais |
| Mars | Marseille Prolog | marshaling |
| marshalling | MARSYAS | Martian |
| Martin Marietta Laboratories Moorestown | MARVIN | Mary |
| MAS | MASCOT | Mask Read-Only Memory |
| MASM | MasPar Unity | masquerading |
| Massachusetts Institute of Technology | massage | Massey Hope |
| Massively Multiplayer Online Game | Massively Multiplayer Online Role-Playing Game | master |
| master boot record | Matchmaker | Material Requirements Planning |
| Mathcad | Mathematica | Mathematical Analysis without Programming |
| Mathematical Analyzer, Numerical Integrator and Computer | Mathematics in Recognizable Form Automatically Compiled | MathJax |
| MATHLAB | MATH-MATIC or MATHMATIC | math-out |
| MathWorks | MATLAB | Matrix |
| Matrix Compiler | MATRIX MATH | Matrix Math eXtensions |
| MAU | Mauchly, John W. | mawk |
| maximal free expression | maximin | MAXIMOP |
| maximum Maytag mode | maximum seek time | maximum segment size |
| Maximum Transmission Unit | Maxis Software | MB |
| MBASIC | Mbogo, Dr. Fred | MBONE |
| MBps | mbps | MBS |
| MC | mc | MC68000 |
| MC68010 | MC68020 | MC68030 |
| MC68040 | MC6809 | MCA |
| MCAD | MCC | McCulloch-Pitts neuron |
| MCDBA | MCDST | McG360 |
| MCGA | MCI | MCI Mail |
| MCL | M-Code | MCP |
| MCP-1600 | MCPD | MCS |
| MCSA | MCSD | MCSE |
| mcvax | mcvert | MD |
| md | MD5 | MDA |
| MDAC | MDCT | MDF |
| MDI | MDL | Mean Time Between Failures |
| Mean Time Between Faults | Mean Time To Recovery | measure |
| measurement | meatspace | meatware |
| media | Media Access Control | Media Access Unit |
| Media Converter | Media Gateway Control Protocol | Medium Access Control |
| meeces | Meet | meg |
| mega- | megabits per second | megabyte |
| megabytes per second | megaflop | megaflops |
| MegaHertz | megapenny | MEGO |
| Mei | Mel | MELD |
| MELDC | Melinda | Mel Kaye |
| Mellor | meltdown | Melvin Conway |
| member function | membership function | meme |
| meme plague | memetic algorithm | memetics |
| Memex | memo function | memoisation |
| memoised function | memoization | memoized function |
| memory | memory address space | memory dump |
| memory farts | memory leak | memory location |
| memory management | Memory Management Unit | memory mapped I/O |
| memory protection | memory smash | Memory Type Range Registers |
| MEMS | Mentat | MENTOR |
| menu | menu bar | menuitis |
| MENYMA/S | Mercury Autocode | mercury delay line |
| MERISE | Merlin | MEROON |
| Mesa | mesh | MESI protocol |
| message | message board | Message Digest 5 |
| message digest function | Message Handling System | message passing |
| Message Passing Interface | message switching | Message Transfer Agent |
| Message Transport Agent | Messaging Application Programming Interface | Messaging Applications Programming Interface |
| mess-dos | META | meta |
| META 5 | meta bit | MetaCard |
| Meta-CASE tool | metaclass | Meta Class System |
| Meta-Crystal | metadata | Metadata Information Partners |
| META element | metafile | METAFONT |
| metaheuristic | Meta-II | metainformation |
| Meta-IV | METAL | metalanguage |
| Metal Oxide Semiconductor | Metal Oxide Semiconductor Field Effect Transistor | metaphone |
| metaprogram | metasyntactic variable | metasyntax |
| META tag | Meta-Vlisp | Met-English |
| METEOR | meter | method |
| method invocation | methodology | Methods |
| me too | metre | metric |
| metric space | Metropolitan Area Network | M-expression LISP |
| MFC | MFE | MFLOPS |
| MFM | MFTL | mg |
| MGCP | mh | MHDL |
| MHEG | MHS | MHz |
| MIB | MIB Variable | MIC |
| Mic-1 | Mic-2 | MICE |
| mice | Michigan Algorithm Decoder | mickey |
| mickey mouse program | MICR | micro |
| micro- | microarray | Micro Assembly Language |
| microcentury | Micro Channel Architecture | microchip art |
| microcode | Microcom Networking Protocol | microcomputer |
| microcontroller | MicroDroid | microelectromechanical system |
| Microelectronics and Computer Technology Corporation | MicroEmacs | microfloppies |
| microfortnight | MicroGnuEmacs | Micro Instrumentation and Telemetry Systems |
| Micro Interpreter for Knowledge Engineering | microkernel | microLenat |
| microlog | micrometre | Micro ML |
| Micron | micron | Micron Electronics, Inc. |
| Micronetics Standard MUMPS | Micro$oft | microperation |
| microphone | microPLANNER | microprocesor |
| microprocessor | Microprocessor without Interlocked Pipeline Stages | microprogramming |
| microReid | MICRO SAINT | microsecond |
| Microserf | Microslop | Microsloth Windows |
| Microsoft | Microsoft Access | Microsoft Basic |
| Microsoft Certified Application Developer | Microsoft Certified Database Administrator | Microsoft Certified Desktop Support Technician |
| Microsoft Certified Professional Developer | Microsoft Certified Solution Developer | Microsoft Certified System Engineer |
| Microsoft Certified Systems Administrator | Microsoft Certified Systems Developer | Microsoft Corporation |
| Microsoft Data Access Components | Microsoft Disc Operating System | Microsoft Disk Operating System |
| Microsoft DOS | Microsoft Excel | Microsoft Exchange |
| Microsoft Extended | Microsoft Foundation Classes | Microsoft IIS |
| Microsoft IntelliMouse Explorer | Microsoft Internet Information Server | Microsoft Mail |
| Microsoft Mail Application Program Interface | Microsoft Network | Microsoft Networking |
| Microsoft Office | Microsoft Office Small Business Edition | Microsoft Point to Point Encryption |
| Microsoft Project | Microsoft SQL Server | Microsoft Windows |
| Microsoft Word | MicroStation | microtape |
| Microware Corporation | Microwave Hardware Description Language | MIDAS |
| Midas | Midas-WWW | middle-endian |
| middleware | MIDI | mid-level network |
| MIF | MIG | MIGRAINES |
| MII | MIIS | MIKE |
| mil | Milarepa | MILITRAN |
| mill | millennium bug | millennium meltdown |
| milli- | millihelen | milliLampson |
| millisecond | MILNET | MIMD |
| MIME | mimencode | Mimer SQL |
| MIME type | MIMIC | MIMOLA |
| mind mouse | mind uploading | Minerva software |
| Minesweeper, Chess, Solitaire Expert | minicomputer | Mini Disc |
| minifloppy | minimal automaton | minimax |
| Mini-ML | minimum seek time | Mini PL/I |
| Ministra | MINITAB II | MINIX |
| Minnesota Internet Users Essential Tool | MINT | MiNT |
| Mint Is Not TRAC | Minuet | MINUIT |
| minus | minus infinity | MIPS |
| MIPS project | MIPS R2000 | MIPS R2010 |
| MIPS R3000 | MIPS R4000 | MIPS Technologies, Inc. |
| Miracula | Miranda | MIRFAC |
| mirror | mirroring | mirror site |
| MIS | misbug | MIS Director |
| misfeature | MISHAP | Missed'em-five |
| missile address | missing | miswart |
| MIT | MIT AI Lab | MITI |
| MITILAC | MIT Licence | MIT License |
| MIT Lisp Machine | MITRE Corporation | MIT Research Laboratory for Electronics |
| MITS | MIT Scheme | MIX |
| MIXAL | MIX Communications | M-JPEG |
| MJS | mk | ML |
| ml | ML-2000 | MLAB |
| ML/I | MLISP | ML Kit |
| MLL | ML-lex | ML-Linda |
| ML Threads | ML-Twig | mm |
| Mma | mmap | MMCD |
| MMDF | MMI | MML |
| MMO | MMOG | MMORPG |
| MMS | MMU | MMX |
| MMX technology | mn | mnemonic |
| MNP | mo | Mobile Subscriber Integrated Services Directory Number |
| Mobile Triton | mobo | MOBSSL-UAF |
| moby | mockingbird | Mockingboard |
| Mock Lisp | mod | mod_autoindex |
| modal | modal logic | modam |
| MODCAL | Mode | mode |
| mode bit | MODEF | MODEL |
| model | model checking | modeling |
| modeling language | modelling | modelling language |
| Modelsim | Model-View-Controller | Model-View-Presenter |
| modem | MODEM7 | moderator |
| Modified Frequency Modulation | modifier | M O drive |
| MODSIM | MODSIM II | Modula |
| Modula-2 | Modula-2* | Modula-2+ |
| Modula-3 | Modula-3* | Modula-3pi |
| Modula-P | Modula-Prolog | Modula/R |
| modular arithmetic | Modular C | MODUlar LAnguage |
| Modular Prolog | Modular SB-Prolog | module |
| Modulex | modulo | modulo arithmetic |
| modulo operator | Mohammed Al-Khawarizmi | molly-guard |
| monad | monadic | Mongolian Hordes technique |
| moniter | monitor | monkey, scratch |
| monkey sort | monkey up | Mono |
| monochrome | Monochrome Display Adapter | monoid |
| monotonic | MONSTR | Montage |
| Monte Carlo | monty | MOO |
| Moof | Moore bound | Moore graph |
| Moore's Law | moose call | MooZ |
| Mops | MORAL | more |
| moria | morphing | Morse code |
| MORTRAN | MOS | Mosaic |
| Mosaic Communications Corporation | Moscow ML | MOSFET |
| Mosiac | MOS Technologies | MOS Technology |
| most general unifier | Most Significant Bit | motd |
| mother | motherboard | Motif |
| Motion JPEG | Motion Picture Experts Group | Motorola |
| Motorola 14500B | Motorola 6800 | Motorola 68000 |
| Motorola 6801 | Motorola 68010 | Motorola 68020 |
| Motorola 68030 | Motorola 68040 | Motorola 68050 |
| Motorola 68060 | Motorola 6809 | Motorola 680x0 |
| Motorola 68HC11 | Motorola 68LC040 | Motorola 88000 |
| Motorola, Inc. | mount | Mouse |
| mouse | mouse ahead | mouse around |
| mouse arrest | mouse belt | mouse droppings |
| mouse elbow | mouse mat | mouse pad |
| mouse trails | mouso | Moving JPEG |
| Moving Picture Expert Group | Moving Picture Experts Group | Moving Pictures Experts Group |
| Moxie | Mozilla | Mozilla Foundation |
| Mozilla Public License | mp | MP1 |
| MP-1 | MP2 | MP3 |
| MP3Pro | MPC | MPC Level 1 Specification |
| MPC Level 2 Specification | MPEG | MPEG-1 |
| MPEG-1 audio layer 1 | MPEG-1 audio layer 3 | MPEG-1 layer 3 |
| MPEG-2 | MPEG-21 | MPEG-2.5 audio layer 3 |
| MPEG-2 AAC Low Profile | MPEG-2 audio layer 3 | MPEG-2 Low Sampling Frequencies Extention |
| MPEG-2 LSF | MPEG-2 MC | MPEG-2 Multi Channel Extention |
| MPEG-3 | MPEG-4 | MPEG-4 AAC Main Profile |
| MPEG-4 AAC SSR | MPEG-4 Advanced Audio Coding Scalable Sampling Rate | MPEG-4 Harmonics, individual lines and noise |
| MPEG-4 Harmonic Vector eXCitation | MPEG-4 HILN | MPEG-4 HVXC |
| MPEG-7 | MPEGplus | MPG |
| mpg | MPI | MPL |
| MPL II | MPLS | MPLS domain |
| MP/M | MPP | MPPE |
| MPPL | MPR II | M-Prolog |
| MPS III | MPSX | MPV |
| MPX | mq | MQG |
| mr | MRAM | MRDA |
| MRDS | MRI | MROC |
| MROM | MRP | MRP II |
| MRS | ms | MS Access |
| MSAU | MSB | MS-BASIC |
| MS-DOG | MS-DOS | MSG.84 |
| msgGUI | MSIE | MSM |
| MS Mail | MSN | MS Office |
| MS Project | MSS | MS-Windows |
| MswLogo | MS Word | MSX |
| MSX-DOS | mt | MTA |
| MTBF | mtc | M Technology Association |
| MTOS | MTS | MTTR |
| MTU | Mu | mu |
| MUA | MUCAL | MUD |
| muddie | Muddle | mudhead |
| MUD Object Oriented | muFP | Muhammad al-Khwarizmi |
| Muhammad ibn Musa al-Khwarizmi | Muieblackcat | mu-law |
| Mule | Mul-T | Multi-BinProlog |
| multiboot | multiC | MultiCal System |
| multicast addressing | multicast backbone | Multi-channel Memorandum Distribution Facility |
| multician | Multi-Color Graphics Array | Multics |
| Multics Relational Data Store | Multiflow Computer | Multi-Garnet |
| multihomed host | multilayer perceptron | MultiLisp |
| multimedia | Multimedia and Hypermedia information coding Expert Group | MultiMedia Compact Disc |
| MultiMedia Extension | Multimedia Integrated Conferencing for European Researchers | Multimedia Internet Mail Extensions |
| Multimedia Messaging Services | Multimedia PC | Multimedia Personal Computer |
| multimedia system | multi-part key | Multi-Pascal |
| multiple access | Multiple Access with Colision Avoidance | multiple boot |
| Multiple Document Interface | multiple inheritance | Multiple Instruction Multiple Data |
| Multiple Instruction/Multiple Data | Multiple Master | multiple perspective software development |
| multiple value | Multiple Virtual Storage | multiplexer |
| multiplexing | multiplexor | Multiplexor Channel |
| multiplex printer | Multipop-68 | multiprocessing |
| multiprocessor | multiprogramming | Multiprotocol Label Switching |
| Multipurpose Internet Mail Extensions | multiscan | MultiScheme |
| Multistation Access Unit | multisync | Multisystem eXtention Interface Bus |
| multitasking | Multi-tasking Program for Microcomputers | multithreaded |
| multithreading | MultiTOS | multi-user |
| Multi-User Dimension | Multi-User Dungeon | Multi-User Shared Hallucination |
| Multi-Version Concurrency Control | multi-way branch | MuMath |
| mumblage | mumble | mumble mode |
| MUMPS | munch | munching |
| munching squares | munchkin | mundane |
| mung | munge | MUP |
| MU-Prolog | Murphy's Law | Muse |
| museum | MUSH | Music |
| Musical Instrument Digital Interface | Musicam | MuSimp |
| MUSL | mutant | Mutation Testing |
| MuTeX | mutex | mutter |
| mutual exclusion | mutually recursive | mutual recursion |
| mux | mv | MV* |
| MVC | MVCC | MVP |
| MVS | MVS/ESA | MVS/OE |
| MVS/Open Edition | MVS/SP | MVS/XA |
| mw | MX | mx |
| MXI | MXIbus | MX Record |
| my | My Favourite Toy Language | MYOB |
| MySpace | MySQL | MySQL AB |
| MYSTIC | MZ | mz |
| N | N10 | na |
| nadger | NAG | Nagling Coalescence |
| nagware | nailed to the wall | nailing jelly |
| naive | naive user | NAK |
| name capture | named | named pipe |
| name resolution | name service switching | namespace |
| naming convention | NaN | NAND |
| nano- | nanoacre | nanobot |
| nanocomputer | nanofortnight | nanometre |
| nanosecond | nanotechnology | Napier |
| NAPLPS | NAPSS | narrowband |
| narrowing | NAS | nasal demons |
| NASI | nastistical | NASTRAN |
| nastygram | NAT | Nathan Hale |
| National Advanced Systems | National Bureau of Standards | National Center for Supercomputing Applications |
| national characters | National Database Language | National Information Infrastructure |
| National Information Services and Systems | National Institute of Standards and Technology | National Research and Education Network |
| National Science Foundation | National Science Foundation Network | National Semiconductor |
| National Semiconductor 32000 | National Software Reuse Directory | National Spatial Data Infrastructure |
| National Television Standards Committee | native compiler | Native Language System |
| NATURAL | natural deduction | Natural English |
| natural language | Natural Language Information Analysis Method | natural language processing |
| natural number | nature | NAU |
| nav bar | navigating | navigation |
| navigation bar | Navigator | Nawk |
| NB | NBFCP | NBS |
| NBT | NC | nc |
| NCD | NCP | NCR Corporation |
| NCRL | NCR Language | NCS |
| NCSA | ND | NDIS |
| NDL | NDS | ne |
| neat hack | neats vs. scruffies | Nebula |
| NEC | NEC 780-C | needs assessment |
| neep-neep | negation by failure | negative acknowledgement |
| neighborhood bike code | NELIAC | Neon |
| neophilia | Neptune | nerd |
| Nerd pride | NERECO | NESL |
| nested class | net | net.- |
| netaddress | NetBEUI | NetBIOS |
| NetBIOS Frames Control Protocol | NetBios over TCP/IP | NetBOLLIX |
| NetBSD | netbui | netburp |
| netCDF | Netcom On-line Communication Services, Inc. | netdead |
| Netfind | net.god | NetHack |
| netiquette | NETL | netlag |
| NetLingo | netload | Netmarq Limited |
| netmask | NetNanny | netnews |
| net.personality | netpipes | net.police |
| netquette | Netrek | netrock |
| Netscape | Netscape Communications Corporation | Netscape Navigator |
| Netscape Public License | netsplit | netstat |
| netter | NetWare | NetWare Core Protocol |
| Netware Directory Services | Netware Input/Output Subsystem | NetWare Link State Protocol |
| network | network address | Network Addressable Unit |
| Network Address Translation | Network Address Translator | Network Administrator |
| Network Application Support | Network Attached Storage | network byte order |
| network card | network closet | Network Computing Devices |
| network database | Network Definition Language | Network Device Interface Specification |
| network engineer | Network extensible Window System | Network File System |
| Network Filing System | Network Information Center | Network Information Service |
| Network Information System | networking | network interface card |
| network interface controller | network layer | network layer reachability information |
| network management | network meltdown | Network News Transfer Protocol |
| network node | Network Node Interface | network number |
| Network Operating System | network operating system | Network Operations Center |
| network operator | network redirector | network segment |
| Network Solutions, Inc. | network storm | Network Termination |
| network, the | Network Time Protocol | network topology |
| network transparency | NetX | Net:X |
| neural nets | neural network | neuron |
| Neutral Interconnect | neutrosophic | neutrosophic logic |
| neutrosophic probability | neutrosophic set | neutrosophic statistics |
| Neutrosophy | Never Offline | newbie |
| New Flavors | newgroup wars | New Jersey |
| newline | NEWP | NEW Programming language |
| NeWS | news | NewsClip |
| newsfroup | newsgroup | newsletter |
| Newspeak | Newsqueak | news reader |
| New Storage System | new talk | New Testament |
| Newton | Newton-Raphson iteration | Newton's method |
| NewWave | NewYacc | New York State Educational Reasearch ETwork |
| New York University | NEXOR | Nexpert Object |
| NeXT, Inc. | Next Program Counter | NEXTSTEP |
| nf | NFA | NFQL |
| NFR | NFS | NFT |
| ng | NGL | NHOH |
| ni | NIAL | NIAL Systems Ltd. |
| NIAM | nibble | Nibble Mode DRAM |
| NIC | NIC.DDN.MIL | NICE |
| nick | nickle | NICOL I |
| NIFOC | Nightmare File System | night mode |
| NIH | NIHCL | NII |
| NIKL | Niklaus Wirth | NIL |
| niladic | Ninety-Ninety Rule | Nintendo |
| NIOS | nipple | NIS |
| NISO | NISS | NIST |
| NJCL | nl | NLANR |
| NLM | NLP | NLRI |
| NLS | NLSP | NLX |
| NMI | nML | NMU |
| NN | nn | NNI |
| NNTP | no | NOC |
| NODAL | Nodal Switching System | noddy |
| node | Node.js | Node Package Manager |
| noise | noise margin | noise shaping |
| NOL | NOMAD | NOMEX underwear |
| Nominal Semidestructor | non-algorithmic procedure | non-constructive proof |
| nondeterminism | nondeterministic | nondeterministic automaton |
| nondeterministic polynomial time | Nondeterministic Turing Machine | non-impact printer |
| non-interlaced | nonintrusive testing | nonlinear |
| Non-Maintainer Upload | Non-Maskable Interrupt | non-optimal solution |
| Nonpareil | non parity | non-polynomial |
| Non Return to Zero Inverted | nontrivial | Non-Uniform Memory Access |
| non-uniform quantising logarithmic compression | Non-Uniform Rational B Spline | non-volatile |
| non-volatile memory | Non-Volatile Random Access Memory | non-volatile storage |
| noob | no-op | NOR |
| NORC COMPILER | NorCroft | NORD PL |
| NORDUnet | norm | normal distribution |
| normal form | normalisation | normalised |
| normal order reduction | normed space | northbridge |
| NorthWestNet | NOS | NOT |
| Not-a-Number | notebook | NoteCards |
| Notepad | Notes | Nother |
| not ready for prime time | notspot | notwork |
| Nova | Novell Data Systems | Novell DOS |
| Novell, Inc. | Novell NetWare | NOWEB |
| no-write allocation | NP | np |
| NPC | NP-complete | NP-hard |
| NP-hilarious | NPL | npm |
| NPPL | N-Prolog | NP time |
| NP tricky | NQS | Nqthm |
| nr | NREN | nroff |
| NRZ | NRZI | ns |
| NS16000 | NS32000 | NSA line eater |
| NSAPI | NSDI | NSE |
| NSF | NSFIP | NSFNET |
| NSI | nslookup | NSRD |
| NSS | NT | NT1 |
| NT5 | ntalk | NTAS |
| NT File System | NTFS | n-tier |
| NTIS | NTMBS | NTP |
| NTSC | NTU | nu |
| NuBus | nu-calculus | NUCLEOL |
| nude | nuke | null |
| nullary | null modem | null-terminated multibyte string |
| NUMA | Number 5 Electronic Switching System | number crunching |
| number keys | numbers | number sign |
| numeric keypad | Numeris | Nuprl |
| NU-Prolog | nurbs | Nu Thena |
| nut loose on keyboard | NUXI problem | NVL |
| NVRAM | NVS | NWNET |
| NYAP | nybble | nyet.gif |
| nyetwork | nym | nym server |
| Nyquist frequency | Nyquist Theorem | NYSERNET |
| NYU OMNIFAX | nz | O |
| O2 | Oaklisp | OAP |
| OASIS Open Document Format for Office Applications | OATH | Ob- |
| OBDC | OBE | Oberon |
| Oberon-2 | Oberon-V | OBEX |
| obfuscated | Obfuscated C Contest | obi-wan error |
| OBJ | OBJ0 | OBJ2 |
| OBJ3 | object | ObjectBroker |
| ObjectCenter | Object CHILL | object code |
| Object-code Buffer Overrun Evaluator | Object Compatibility Standard | Object Constraint Language |
| Object Database Management Group | Object Data Management Group | Objecteering |
| Object Exchange | objectfuscated code | object identifier |
| Objectionable-C | Objective C | Objective CAML |
| Objective Modula-2 | Objective PASCAL | Object Linking and Embedding |
| Object Lisp | ObjectLOGO | Object Management Group |
| Object management system | object method | Object Modelling Technique |
| Object Oberon | object-orientation | object-oriented |
| object-oriented analysis | object-oriented database | object-oriented design |
| Object-Oriented Fortran | object-oriented language | Object-Oriented Pascal |
| object-oriented polymorphism | object-oriented programming | object-oriented programming language |
| Object-oriented SQL | Object-Oriented Turing | Objectory |
| ObjectPAL | Object Pascal | Object Persistence Framework |
| object relational mapping | object relational modelling | Object Request Broker |
| Object Role Modeling | Object Value | Objectworks |
| Object Z | Objlog | OBJT |
| ObjVlisp | ObjVProlog | Obliq |
| oblique stroke | Oblog | OBOE |
| OBSCURE | observational equivalence | Oc |
| OC-12 | OC-3 | OC-48 |
| OCAL | occam | occam 2 |
| Occam's Razor | occlude | occurs check |
| OCL | OCLC | OC-n |
| OCODE | OCP | OCR |
| OCS | octal | Octave |
| octet | octothorpe | OCX |
| OD390 | ODA | ODBC |
| ODC | Ode | ODI |
| ODIF | ODMA | ODMG |
| odometry | ODP | ODS |
| ODSA | ODT | OEM |
| OFA | off-by-one error | Office |
| office automation | Office By Example | Office Workstations Limited |
| Official Production System | off-line | off-line world |
| offset | offshoring | off-side rule |
| off the trolley | ogg | Ogg Vorbis |
| OHCI | Ohm | Ohm, Georg Simon |
| ohnosecond | OIC | OID |
| OIL | OLAP | OLAP Council |
| OLC | OLDAS | old fart |
| old talk | Old Testament | OLE |
| OLE custom controls | OLE DB | OLE for Process Control |
| OLGA | Olivetti | O-Logic |
| OLTP | OLWM | om |
| OMA | Omega | Omega-algebraic |
| Omega test | OMF | OMG |
| OMNICODE | OMNIFAX | OMNITAB |
| OMR | OMS | OMT |
| OMTool | ONC | Ondine |
| one | one-banana problem | one-dimensional array |
| one-line fix | one-liner wars | ones complement |
| One-Time Password | One Time Programmable Read-Only Memory | one-way function |
| one-way hash function | on-line | On-Line Analytical Processing |
| Online Computer Library Center, Inc. | On-Line Computer system | Online Media |
| On-line Process Synthesizer | Online Public Access Catalog | On-Line Transaction Processing |
| Ontic | onto | ontology |
| OnX | OO | OOA |
| OOD | OODB | OODBMS |
| OOF | OOGL | OOo |
| OOP | OOPL | OOPS |
| OOPSLA | OOSD | OOZE |
| op | OPAC | Opal |
| OPC | op code | open |
| open box testing | open brace | OpenBSD |
| open/closed principle | open-collar worker | Open DataBase Connectivity |
| Open Data-link Interface | Open DeathTrap | Open Desktop |
| Open Distributed Processing | Open Distributed System Architecture | OpenDoc |
| OpenDocument | Open Document Architecture | Open Document Interchange Format |
| Open Document Management API | OpenGL | Open Graphics Library |
| Open Group | OpenInsight | open interval |
| Open Look | Open Network Computing | OpenOffice.org |
| open parenthesis | Open Prolog | Open Scripting Architecture |
| Open Search | Open Shortest-Path First | Open Shortest-Path First Interior Gateway Protocol |
| Open Software Foundation | open source | Open Source Definition |
| Open Source Initiative | Open source license | OpenStep |
| open switch | Open System Architecture | Open Systems Interconnect |
| Open Systems Interconnection | Open Telecom Platform | Open Trading Protocol |
| OpenTransport | Open University | OpenVMS |
| OpenWindows | operand | operating |
| operating system | Operating System/360 | Operating System/Multiprogramming of Fixed Tasks |
| operational database | Operational Data Store | operational requirements |
| operational semantics | operational test and evaluation | operational testing |
| operation code | operations support technician | operator |
| Operator Control Language | operator overloading | OPF |
| Opportunity Management System | OPS | OPS5 |
| OPS83 | Optical Carrier 12 | Optical Carrier 3 |
| Optical Carrier 48 | Optical Carrier n | Optical Character Recognition |
| optical computing | optical diff | optical disc drive |
| optical disk drive | optical drive | optical fiber |
| optical fibre | optical grep | Optical Mark Reader |
| optical mouse | Optical Signal Processor | optical storage |
| Optical Storage Technology Association | Optical Time Domain Reflectometer | Optical Time Domain Reflectometry |
| optimal | Optimal Flexible Architecture | optimise |
| optimising compiler | optimism | optimize |
| option | OPTRAN | Opus |
| OR | Oracle | Oracle 7 |
| Oracle Card | Oracle*CASE | Oracle Co-operative Applications |
| Oracle Corporation | Oracle Parallel Server | Oracle Rdb |
| Oracle Toolkit | Orange Book | ORB |
| Orbit | Orca | Order Code Processor |
| order-embedding | ordering | ordinal |
| ordinary differential equation | ordinate | OREGANO |
| O'Reilly and Associates | org | Organic Mode |
| Orient84/K | Original Equipment Manufacturer | ORKID |
| ORM | orphaned i-node | orphan process |
| ORTHOCARTAN | orthogonal | orthogonal instruction set |
| Orwell | OS | OS2 |
| OS/2 | OS/360 | OS/390 |
| OS-9 | OSA | OSA extension |
| OSAX | Osborne 1 | Osborne, Adam |
| Osborne Computer Corporation | OSCAR | OSD |
| OSE | OSF | OSI |
| OSI Model | OSI Reference Model | OSI-RM |
| OSI seven layer model | O'small | OS/MFT |
| OS/MVT | OSP | OSPF |
| OSQL | OSSL | OSTA |
| OS/VS1 | OS/VS2 | OT |
| OTDR | OT&E | OTI |
| OTOH | OTP | OTPROM |
| OTT | Ottawa Euclid | Ousterhout, John K. |
| Ousterhout's dichotomy | Ousterhout's fallacy | Ousterhout's false dichotomy |
| out | outer join | outline font |
| out-of-band | output | output device |
| Outside Awareness Port | outside-in testing | outsourcing |
| overclocking | Overdrive | overflow |
| overflow bit | overflow flag | overflow pdl |
| overhead | overloading | overriding |
| overrun | overrun screw | overuse strain injury |
| OWHY | OWL | Owl |
| Ox | Oz | oz |
| Oz-Email | P+ | P1754 |
| p2c | P2P | P3L |
| P4 | P6 | pa |
| PABX | PACE | Packard Bell Electronics, Inc. |
| packed decimal | Packed Encoding Rules | packet |
| Packet Assembler/Disassembler | packet driver | Packet in Plastic Grid Array |
| Packet InterNet Groper | packet radio | packet sniffer |
| packet sniffing | packet switch | packet-switched |
| packet switching | Packet Switch Node | packet writing |
| PackIt | PACT I | PACTOLUS |
| PAD | padded cell | Paddle |
| PAGE | page | paged |
| Page Description Language | Paged Memory Management Unit | page fault |
| page in | pagelet | page mode |
| Page Mode DRAM | Page Mode Dynamic Random Access Memory | page out |
| pager | paging | PaiLisp |
| pain in the net | Paintbrush | PAISley |
| Pajek | PAL | Palace |
| palette | palmtop | Palo Alto Research Center |
| Palo Alto Research Centre | PAM | Pam |
| Pandora | panic | PANON |
| PANS | Pansophic | Pantone |
| PAP | Paper Feed Control Character | papermail |
| paper-net | paper tape | paraconsistent probability |
| PARADE | PARADIGM PLUS | Paradigms of AI Programming |
| Paradise | Paradox | paradox |
| Paradox Application Language | Paragon | Paralation |
| Paralation C | Paralation LISP | ParAlfl |
| Parallaxis | parallel | Parallel Advanced Technology Attachment |
| Parallel ATA | Parallel C | parallel computer |
| parallel computing | Parallel FORTH | Parallel Fortran |
| Parallel Haskell | parallelism | Parallel Pascal |
| parallel port | Parallel Presence Detect | parallel processing |
| parallel processor | parallel random-access machine | parallel reduction |
| Parallel Server Option | Parallel SML | Parallel Sysplex |
| Parallel Virtual Machine | param | parameter |
| parameter RAM | parametric polymorphism | paraML |
| paranoid programming | ParaSoft Corp | Parasol |
| PARC | ParcPlace Systems | parent |
| parentheses | parent message | parent process |
| Pari | Paris | parity |
| parity bit | parity error | Parkinson's Law of Data |
| Park-Miller | Parlance | Parlog |
| Parlog++ | parm | PARMACS |
| ParMod | PARS | parse |
| PARSEC | parsed | parser |
| parser generator | parsing | Parsley |
| Partial Differential Equation LANguage | partial equivalence relation | partial evaluation |
| partial function | partial key | partially ordered set |
| partial order | Partial Response Maximum Likelihood | partition |
| partitioned data set | PARTS | PARULEL |
| PASC | Pascal | Pascal- |
| Pascal-80 | Pascal+CSP | Pascal-F |
| Pascal-FC | Pascal/L | Pascal-Linda |
| Pascal-m | Pascal-P | Pascal P4 |
| Pascal Plus | Pascal/R | Pascal-S |
| Pascal-SC | pasos2 | Pasqual |
| PASRO | PASSIM | passive matrix display |
| passphrase | passw0rd | password |
| Password Authentication Protocol | paste | pastie |
| PAT | PATA | patch |
| patch pumpkin | patch space | PATCHY |
| path | path coverage testing | pathname |
| pathname separator | pathological | Path Pascal |
| pathspec | pattern matching | pattern recognition |
| PAW | PAW++ | payware |
| PB Cache | PBCAK | PBD |
| PBEM | PBKAC | PBM |
| PBX | PC | pC++ |
| PC-1834 | PC200 | PC-7150 |
| PCA | P-CAD | PC AT |
| PCB | PC Card | PCCTS |
| PCF | PCI | PCI bus |
| PCI Configuration Utility | PCI Mezzanine Card | PCI slot |
| PC-ism | PCjr | PCL |
| PCLIPS | PCM | PCMCIA |
| PCMIA | PCN | PC-NFS |
| P-code | PC Pursuit | PC-RT |
| PCS | PC-Scheme | PCS/Geneva |
| PC support | PC-TALK III | PCTE |
| PCTE+ | PC-TILES | PCU |
| PC-ware | pcx | PD |
| PDA | PDC | PDC Prolog |
| PDEL | PDELAN | PDES |
| PDF | PDFTeX | PDH |
| PDIL | pdksh | PDL |
| PDL2 | PDM | PDP |
| PDP-10 | PDP-11 | PDP-20 |
| PDP-6 | PDP-7 | PDP Assembly Language |
| PDS | PDSA cycle | PDS/MaGen |
| PDU | PE | pe |
| PeaceNet | peak envelope power | Peano |
| Peano arithmetic | PEARL | Pebble |
| Pebbleman | PEBCAK | PEBKAC |
| PECOS | Pedagogic Algorithmic Language | PEEK |
| PEEL | peephole optimisation | peephole optimization |
| peer | peer-to-peer | peer-to-peer network |
| Pegasus | PEIPA | PEM |
| PENCIL | pencil and paper | penis war |
| Pentium | Pentium 2 | Pentium 3 |
| Pentium II | Pentium III | Pentium II Xeon |
| Pentium Pro | peon | PeopleSoft |
| PEP | Pepper | PEPsy |
| PER | percent | Perceptional Adaptive Subband Coding |
| perceptron | percussive maintenance | perf |
| perfect programmer syndrome | PERFORM | period |
| periodic group | peripheral | Peripheral Component Interconnect |
| peripheral device | Peripheral Technology Group | Perl |
| Perl5 | perl-byacc | Perl profiler |
| permanent link | Permanent Virtual Circuit | Permanent Virtual Connection |
| permission | permutation | perplexity |
| persistence | persistent | Persistent Functional Language |
| persistent memory | Personal Communication Network | Personal Communication Services |
| personal computer | Personal Computer Memory Card International Association | Personal Digital Assistant |
| Personal Identification Number | Personalized Array Translator | person of no account |
| perspective | PERT | pessimal |
| pessimising compiler | peta- | petabyte |
| petaflops | petdingo | Peter P. Chen |
| Petri net | PETSCII | PEX |
| pf | PFE | PFL |
| pfm | pForth | Pfortran |
| PFP | pg | PGA |
| PGA370 | PGP | PH |
| pH | ph | phacker |
| phage | phase | phase alternating line |
| Phase Encoded | phase of the moon | phase-shift keying |
| phase space | phase-wrapping | PHIGS |
| Philip R. Bagley | Philips | Philips SCC68070 |
| Phil Katz | philosophy | phishing |
| PHOCUS | Phoenix | phone freaking |
| phone mail | phone phreaking | Phonetastic |
| Phong shading | phosphor fatigue | photo CD |
| Photoshop | PHP | PHP: Hypertext Preprocessor |
| phpmyadmin | phreak | phreaking |
| physical | physical address | physical addressing |
| physical file | physical layer | physical memory |
| physical memory address | Physical Sequential | Physical Transport Network |
| Physics Analysis Workbench | PI | pi |
| PIC | pi-calculus | Pick BASIC |
| PICL | PICNIC | pico- |
| picosecond | PICS | PICT |
| PicTeX | pictogram | pictograph |
| Pictorial Janus | picture | picture element |
| Picture Quality Scale | PID | pidgen+ |
| Pidgin | PIE | pif |
| piggybacking | pig, run like a | PIGUI |
| PIL | PILE | PIL/I |
| PILOT | pilot error | Pilot European Image Processing Archive |
| PIM | PIN | PINBOL |
| Pine | pin feed | ping |
| ping command | ping-flood | pinging |
| ping-pong | Pin Grid Array | Pink-Shirt Book |
| pin-out | PIO mode | PIP |
| pipe | pipeline | pipeline break |
| Pipeline Burst Cache | pipelined | Pipelined Burst Cache |
| pipeline stall | pipelining | PIPEX Ltd. |
| piping | piracy | pirate |
| PIRL | pistol | PIT |
| PITA | pixel | pixels per inch |
| pixmap | pizza box | PJPEG |
| PK | pk | PKE |
| PKI | PKLITE | PKUNZIP |
| PKWARE, Inc. | PKZIP | pl |
| PL1 | PL/1 | PL-11 |
| PL360 | PL516 | PL-6 |
| PL.8 | Pla | PLACE |
| PLAGO | plaid screen | PLAIN |
| plain ASCII | Plain Old Documentation | Plain Old Telephone Service |
| Plain Old Telephone System | plain TeX | plaintext |
| PLAN | Plan 9 | Planet |
| plan file | PLANIT | Plankalkül |
| PLANNER | Planner-73 | PLANS |
| plants | PLASMA | Plastic Pin Grid Array |
| platform | Platform for Internet Content Selection | Platform Independent Graphical User Interface |
| platinum-iridium | Platon | PLAY |
| play by electronic mail | Playground | Play, Inc. |
| playpen | Playstation | playte |
| PLC | PL/C | PL Cornell |
| PLD | plenum cable | pleonasm |
| plesiochronous | Plesiochronous Digital Hierarchy | Pleuk grammar development system |
| Plexus | PL/I | PL/I-FORMAC |
| pling | plingnet | PLisp |
| PL/I SUBSET | PL/I Subset G | PLITS |
| PLL | PL/M | PLMK |
| plokta | plotter | PL/P |
| PL/PROPHET | PL/S | PL/Seq |
| PL/SQL | PLTL | plug and play |
| plug and pray | Plug Compatible Manufacturer | Pluggable Authentication Module |
| plugh | plug-in | PLUM |
| Plumber | plumbing | Plural EuLisp |
| PLUS | plus | PLUSS |
| ply | PM | pm |
| pm2 | P-mail | PMBX |
| PMC | PML | PMP |
| pn | pnambic | PNG |
| PNP | PNU-Prolog | POA |
| PoB | POC | POCAL |
| pocket calculator | pocket computer | pod |
| P.O.D. | podcast | POE |
| POFAC | POFOD | POGO |
| point | point-and-drool interface | point-and-grunt interface |
| pointed domain | pointer | pointer swizzling |
| pointing device | pointing stick | Point Of Contact |
| point of presence | point of sale terminal | Point-to-Point Protocol |
| Point-to-Point Protocol over ATM | Point-to-Point Protocol over Ethernet | Point-to-Point Tunneling Protocol |
| Poisson distribution | POJO | poke |
| Pokémon exception handling | Polka | poll |
| polling | Poly | polygon pusher |
| POLYGOTH | polylithism | Poly/ML |
| polymorphic | polymorphic lambda-calculus | polymorphism |
| polynomial | polynomial-time | polynomial-time algorithm |
| polyvinyl chloride | POM | pompom |
| Ponder | Pong | POOL |
| POOL2 | POOL-I | Pooling Agreement for Technical Assistance |
| POOL-T | POP | PoP |
| pop | POP++ | POP-1 |
| POP-10 | Pop-11 | POP-2 |
| POP3 | POP-9X | POPART |
| POPCORN | pop-down menu | POPJ |
| Poplar | POPLER | POPLOG |
| POPLOG ML | POP server | PopTalk |
| PopularitY of Programming Languages | POR | porn |
| porno | pornography | port |
| portability | portable | Portable AIRTIME |
| Portable Commodore 64 | Portable Common Loops | Portable Common Tool Environment |
| portable computer | Portable Document Format | Portable Forth Environment |
| Portable Network Graphics | Portable Object Adapter | Portable Operating System Interface |
| Portable Pixmap | Portable Scheme Debugger | Portable Scheme Interpreter |
| Portable Standard Lisp | Portable Tool Interface | Port Address Translation |
| PORTAL | portal | porting |
| Port Language | portmapper | port number |
| POS | POSE | poset |
| positional representation | POSIX | POSIX Threads |
| POST | post | postcardware |
| posted write-through | Postel, Jon | postfix notation |
| postfix syntax | POSTGRES | PostgreSQL |
| posting | postmaster | post office problem |
| Post Office Protocol | post-order traversal | POSTQUEL |
| PostScript | Postscript point | Post, Telephone and Telegraph administration |
| POSYBL | potential difference | POTS |
| pound | pound on | pound sign |
| POWER | PowerBuilder | power cycle |
| powerdomain | PowerFuL | power hit |
| Power Mac | Power Macintosh | power-on reset |
| power-on self-test | PowerOpen | PowerOpen Association |
| PowerOpen Environment | PowerPC | PowerPC 601 |
| PowerPC G3 | PowerPC Platform | PowerPC Reference Platform |
| Powerpoint | power save mode | powerset |
| Powersoft Corporation | power supply | power supply unit |
| PP96 | PPC | PPCP |
| PPD | PPGA | ppi |
| PPL | PPLambda | PPM |
| PPN | PPP | PPPoA |
| PPPoE | P-Prolog | PPTP |
| PQS | PR | pr |
| pr0n | PRA | pragma |
| PRAM | Praxis Critical Systems | pre\box |
| PRE-CC | PRECCX | precedence |
| precedence lossage | precharge | precision |
| predecessor | predicate calculus | predicate logic |
| predict | predomain | pre-emptive multitasking |
| prefetch | prefix | prefix notation |
| prefix syntax | pre-order | pre-order traversal |
| PREP | prepaging | prepend |
| preprocessor | pre-sales support rep | presence detect |
| presentation layer | Presentation Manager | prestidigitization |
| PRESTO | Pretty Amazing New Stuff | Pretty Good Privacy |
| pretty pictures | prettyprint | pretzel key |
| preventive maintenance | PRI | primary cache |
| Primary Domain Controller | primary key | primary management domain |
| Primary Rate Interface | primary storage | Prime Computer |
| Primenet, Inc. | prime number theorem | prime time |
| primitive | Princeton University | principal type |
| PRINT | printed circuit board | printer |
| Printer Access Protocol | printer port | printf |
| PRINT I | printing discussion | print server |
| Print Services Facility | priority inheritance | priority interrupt |
| priority inversion | priority queue | priority scheduling |
| PRISM | Prisoner of Bill | privacy |
| Privacy Enhanced Mail | private | Private Automatic Branch eXchange |
| Private Branch Exchange | private key | private-key cryptography |
| Private Manual Branch eXchange | privileged instruction | PRL |
| PRMD | PRML | probabilistic |
| probabilistic automaton | Probability of Failure on Demand | Probe |
| problem state | Problem Statement Language/Problem Statement Analyser | PROC |
| procedural | procedural language | Procedural Language/SQL |
| procedure | proceedings | process |
| Process and Experiment Automation Real-Time Language | process data | Process Design Language 2 |
| process ID | process identifier | processing |
| processor | Processor Direct Slot | processor farm |
| Processor System Modeling Language | processor time | process scheduling |
| process table | PROCOL | Procomm |
| Procrustean string | Prodigy | ProDoc |
| product | production system | Professional Graphics Adapter |
| Professional Office System | professional programming | professional services |
| PROFILE | profile | PROFS |
| PROGENY | proglet | program |
| Program Composition Notation | program counter | Program Design Language |
| Program Evaluation and Review Technique | Program Information File | Programmable Airline Reservation System |
| Programmable Array Logic | Programmable Interrupt Controller | Programmable Logic Controller |
| Programmable Read-Only Memory | Programmed Data Processor | PROgrammed Graph REwriting Systems |
| programmer | Programmer Brain Damage | Programmer's Cheer |
| Programmers Hierarchical Interactive Graphics System | PROgrammer's Microapplication Language | Programmer's Switch |
| programming | programming fluid | programming language |
| Programming Language/Cornell | Programming Language/Systems | Program Temporary Fix |
| program transformation | Prograph | PROGRES |
| progressive coding | Progressive JPEG | progressive/sequential coding |
| PROJECT | project assurance | Project Athena |
| Project Guardian | projection | projective plane |
| Project MAC | project management | project planning |
| Prolog | Prolog++ | Prolog-2 |
| Prolog-D-Linda | Prolog-II | Prolog-III |
| Prolog-Linda | Prolog/Mali | PROM |
| PROMAL | Prometheus | promiscuous mode |
| PROM monitor | pron | Pronet |
| Pronunciation | proof | PROOF/L |
| proof theory | propeller head | propeller key |
| proportionally spaced font | Proposal Writing | proposition |
| propositional calculus | propositional logic | Proposition of a Language Useable for Structured Specifications |
| proprietary | PROSE | ProSet |
| PROSPER | Prospero | ProTalk |
| protected mode | PROTEUS | protocal |
| protocol | protocol analyser | protocol converter |
| Protocol Data Unit | protocol layer | protocol stack |
| protoduction | PROTON | Protosynthex |
| prototype | Prototyper | prototyping |
| provably difficult | provably unsolvable | provider |
| provocative maintenance | prowler | proxy |
| proxy ARP | proxy gateway | Proxy Server |
| proxy server | PS | PS1 |
| PS2 | PS/2 | PS 440 |
| PSA | PS-ALGOL | pSather |
| PSD | PSDN | pseudo |
| pseudocode | pseudoprime | pseudorandom number |
| PseudoScheme | pseudosuit | pseudo-tty |
| PSF | PSI | Psion |
| Psion Organiser | PSK | PSL |
| PSL/PSA | PSML | PSN |
| PSO | PSPP | PSTN |
| PSU | psychedelicware | psyton |
| pt | P-TAC | ptc |
| PTF | Pthreads | PTI |
| PTN | Ptolemy | PTT |
| PUB | pub | public directory |
| public domain | public domain software | public-key cryptography |
| Public-Key Cryptography Standards | public-key encryption | Public Key Infrastructure |
| Public Switched Telephone Network | PUBlishing | puff |
| PUFFT | pull | pull-down list |
| pull-down menu | pull media | Pulse Code Modulation |
| pumpkin | pumpkineer | pumpking |
| punch card | punched card | punt |
| Purdue Compiler-Construction Tool Set | Purdue University | pure functional language |
| pure lambda-calculus | PureLink | Pure Lisp |
| purely functional language | Purify | Purple Book |
| purple wire | Purveyor | push |
| push-button | Push Down List | push media |
| P value | PVC | PVM |
| PV-WAVE | pw | PWM |
| py | PYPL | Pythagoras |
| Pythagoras's Theorem | Pythagoras' Theorem | Pythagorean Theorem |
| Python | Q | QA |
| qa | QA4 | QAM |
| Qbasic | QBE | QBIC |
| QCA | QCIF | qdjanus |
| QDOS | QEMM386 | QIC |
| QL | Qlambda | QLISP |
| QLOG | QMQP | QMTP |
| QMW | Q'NIAL | QNX |
| QoS | QPE | QSAM |
| QT-OBJECTS | QTRADER | quad |
| Quadralay Corporation | Quadrature Amplitude Modulation | quadruple bucky |
| quadruplex | Quake | Qualcomm |
| quality | quality assurance | quality control |
| quality of service | Quality Systems & Software Ltd. | quantifier |
| Quantify | quantum | quantum bogodynamics |
| quantum cell | quantum cell wire | quantum computer |
| quantum computing | quantum dot | Quantum-dot Cellular Automata |
| quarter | Quarter CIF | Quarter Inch Cartridge |
| Quay Financial Software | QUEASY | Queen Mary and Westfield College |
| Queens Problem | Queens Puzzle | Queen's University |
| QUEL | query | Query By Example |
| query by image content | query expansion | ques |
| Quest | question mark | queue |
| Queued Sequential Access Method | QUICK | quick-and-dirty |
| QuickDraw | Quick Mail Queueing Protocol | Quick Mail Transfer Protocol |
| Quicksilver | Quicksort | QuickTime |
| quiesce | quiesce time | QUIKSCRIPT |
| QUIKTRAN | QUIN | quine |
| Quintec-Objects | quintillion | Quintus Prolog |
| quote chapter and verse | quotient | Qu-Prolog |
| Quty | qux | QWERTY |
| QX | R2000 | R2RS |
| R3.99RS | R3RS | R4RS |
| rabbit job | RACE | race condition |
| RACF | RAD | Raddle |
| Radio-frequency identification | Radio Frequency Interference | radio in the loop |
| radiosity | RADIUS | radix |
| RAID | RAIL | rainbow series |
| rain dance | RAIS | RAISE |
| RAISE Specification Language | RAL | RAM |
| Rambus DRAM | Rambus, Inc. | RAMDAC |
| RAM disk | RAM drive | RAMIS II |
| RAMTRON | random | random-access memory |
| Random Access Memory Digital-to-Analog Converter | randomness | random number |
| random testing | range | ransomware |
| Rapid Application Development | RapidCAD | Rapidly Extensible Language, English |
| rapid prototyping | Rapidwrite | RAPT |
| RARE | rare mode | RARP |
| RAS | RASP | raster |
| raster blaster | raster burn | raster font |
| rastergram | raster graphics | Raster Image Processor |
| rasterising | rasterizing | raster subsystem |
| Ratatosk | rat belt | RatC |
| RATEL | Rate monotonic scheduling | RATFIV |
| RATFOR | rational | RATional Fortran |
| Rationalized C | rave | rave on! |
| ravioli code | raw data | raw mode |
| RAWOOP-SNAP | ray casting | Rayleigh distribution |
| Ray Tomlinson | ray tracing | R:BASE |
| RBASIC | RBCSP | RBOC |
| rc | RC4 | RCA 1802 |
| RCA 1805 | RCC | rc file |
| RCL | rcp | RCS |
| Rdb | rdb | RDBA |
| RDBMS | RDF | RDI |
| RDL | RDOS | RDP |
| RDRAM | RDS | RE |
| re | read-eval-print loop | README file |
| Read-Only Memory | read-only user | real |
| RealAudio | real estate | real hack |
| reality check | realization | Really Simple Syndication |
| real mode | real number | real operating system |
| Real Programmer | Real Programmers Don't Use Pascal | Real Simple Syndication |
| Real Soon Now | real-time | Real-Time Common Design Language |
| Realtime Disk Operating System | Real-Time Euclid | Real-Time Mentat |
| Real-Time Object-Oriented Modeling | Real-Time Operating System | Real-Time Operating System Nucleus |
| Real-Time Pascal | Real Time Streaming Protocol | real-time structured analysis |
| Real-Time Transport Protocol | real user | Real Video |
| Real World | reaper | reassembly |
| reboot | REC | recent changes |
| recipe | recipient | Recital |
| RECOL | Recommended Standard | record |
| Record Management Services | records | Record Separator |
| rectangle slinger | recurrence relation | recurse |
| recursion | recursion theory | recursive |
| recursive acronym | recursive definition | recursive descent parser |
| Recursive Functional Algorithmic Language | Recursive Macro Actuated Generator | recursive type |
| Red | Red Book | Red Brick Intelligent SQL |
| Redcode | redex | Red Hat |
| RediLisp | redirection | redirector |
| RedNet Ltd. | redocumentation | REDUCE |
| Reduced Instruction Set Computer | reduction | reduction strategy |
| redundancy | Redundant Array of Independent Disks | Redundant Array of Independent Drives |
| Redundant Array of Inexpensive Disks | Redundant Array of Inexpensive Servers | Redundant Arrays of Inexpensive Disks |
| red wire | red zone | re-engineering |
| re-entrant | refactoring | REFAL |
| REF-ARF | reference | reference counting |
| referential integrity | referentially transparent | referential transparency |
| referer | referrer | REFINE |
| Refined C | Refined Fortran | reflexive |
| reflexive domain | Reflexive transitive closure | RefLisp |
| refresh | refreshable braille display | refreshable display |
| refresh rate | refuctoring | refutable |
| regex | regexp | Regina |
| regional network | register | register allocation |
| register assignment | register dancing | registered port |
| register set | register spilling | Register Transfer Language |
| registry | regression | regression testing |
| REG-SYMBOLIC | REGTRAL | regular expression |
| Regular Expression Converter | regular graph | rehi |
| Reid, Brian | reify | re-image |
| reincarnation, cycle of | reinvent the wheel | relation |
| relational algebra | relational calculus | relational database |
| relational database management system | relational data model | relational DBMS |
| relational language | relational model | RELATIVE |
| relatively prime | relative pathname | Relative Record Data Set |
| RELCODE | release | released version |
| REL English | relevance | reliability |
| Reliability, Availability, Serviceability | reliable communication | Reliable Data Protocol |
| religion of CHI | religious issues | REM |
| remailer | Remote Access Services | Remote Database Access |
| Remote Desktop Protocol | remote echo | Remote Job Entry |
| remote login | Remote Method Invocation | remote monitoring |
| Remote Operations Service Element | Remote Procedure Call | Remote Reference Layer |
| Remote Spooling Communication Subsystem | Remote Write Protocol | removable disk |
| removable hard disk | rendering | RenderMan Shading Language |
| rendezvous | REP | repeat |
| repeater | repeating group | repeat loop |
| repeat until | repetitive strain disorder | repetitive strain injury |
| REPL | replacement algorithm | Replay |
| replication | replicator | reply |
| Repondez s'il vous plait | Report Program Generator | repository |
| Representation Language Language | Request For Comments | request for proposal |
| Request For Technology | Required-COBOL | requirements |
| Requirements Acquisition and Controlled Evolution | requirements analysis | Requirements Engineering |
| Research Systems, Inc. | ResEdit | reserved memory |
| resolution | resolver | Resource Access Control Facility |
| Resource Description Framework | resource fork | Resource Reservation Protocol |
| Restricted EPL | restriction | Restructured EXtended eXecutor |
| restructuring | retcon | rete |
| RETI | Retrieve | retrocomputing |
| retronym | return from interrupt | return from the dead |
| Return To Zero | reusability | reuse |
| Reverse Address Resolution Protocol | Reverse ARP | reverse engineering |
| Reverse Polish Notation | reverse polish syntax | Revised ALGOL 60 |
| revision | Revision Control System | Revolutionary Surrealist Vandal Party |
| revolutions per minute | REX | REXX |
| REXXWARE | RF | RFC |
| RFC 1014 | RFC 1034 | RFC 1035 |
| RFC 1057 | RFC 1058 | RFC 1081 |
| RFC 1094 | RFC 1112 | RFC 1119 |
| RFC 1123 | RFC 1156 | RFC 1157 |
| RFC 1171 | RFC 1208 | RFC 1213 |
| RFC 1267 | RFC 1268 | RFC 1304 |
| RFC 1321 | RFC 1334 | RFC 1341 |
| RFC 1347 | RFC 1350 | RFC 1388 |
| RFC 1436 | RFC 1441 | RFC 1442 |
| RFC 1443 | RFC 1444 | RFC 1445 |
| RFC 1446 | RFC 1447 | RFC 1448 |
| RFC 1449 | RFC 1450 | RFC 1451 |
| RFC 1452 | RFC 1475 | RFC 1508 |
| RFC 1509 | RFC 1520 | RFC 1521 |
| RFC 1526 | RFC 1531 | RFC 1550 |
| RFC 1561 | RFC 1568 | RFC 1591 |
| RFC 1630 | RFC 1661 | RFC 1700 |
| RFC 1701 | RFC 1702 | RFC 1707 |
| RFC 1730 | RFC 1756 | RFC 1760 |
| RFC 1777 | RFC 1778 | RFC 1795 |
| RFC 1823 | RFC 1825 | RFC 1831 |
| RFC 1861 | RFC 1938 | RFC 1951 |
| RFC 1959 | RFC 1960 | RFC 2045 |
| RFC 2046 | RFC 2047 | RFC 2048 |
| RFC 2049 | RFC 2060 | RFC 2061 |
| RFC 2068 | RFC 2093 | RFC 2131 |
| RFC 2234 | RFC 2236 | RFC 2246 |
| RFC 2279 | RFC 2281 | RFC 2298 |
| RFC 2326 | RFC 2364 | RFC 2408 |
| RFC 2516 | RFC 2543 | RFC 2795 |
| RFC 2821 | RFC 3232 | RFC 4213 |
| RFC 792 | RFC 793 | RFC 821 |
| RFC 822 | RFC 826 | RFC 854 |
| RFC 903 | RFC 908 | RFC 959 |
| RFCOMM | RFE | RFI |
| RFID | RFP | RFT |
| RG58 | RG8 | RGB |
| Rhapsody | ribbon cable | rib site |
| rice box | Richard Gabriel | Richard Hamming |
| Richard Korf | Richard P. Feynman | Richard P. Gabriel |
| Richard Stallman | rich object | Rich Site Summary |
| Rich Text Format | RIFF | RIGAL |
| Rigel | right brace | right bracket |
| right-click | right join | right outer join |
| right parenthesis | Right Thing | Rijndael |
| ring network | ring topology | Riordan's Internet Privacy Enhanced Mail |
| RIP | rip | ripcording |
| RIPE | RIPEM | ripper |
| RISC | RISCiX | RISC OS |
| RiscPC | RISC System/6000 | Risk Based Testing |
| RISQL | RITL | RJ-11 |
| RJ-45 | RJE | RKM |
| RL | rl | RLaB |
| RLDRAM | RLE | RLF |
| RLL | rlogin | RMAG |
| RMAIL | RMI | RM-ODP |
| RMON | RMS | RNF |
| ro | roach | ROADS |
| Robert T. Morris | ROBEX | RoboHELP |
| robot | robot exclusion standard | robots.txt |
| robust | Rockwell Protocol Interface | Rocky Mountain Basic |
| rococo | ROCOF | roff |
| ROFL | ROFLMAO | rogue |
| rollback | ROM | ROM BIOS |
| ROME | Rom Kernel Manual | room |
| ROOM Methodology | room-temperature IQ | root |
| root bridge | root directory | root mode |
| root node | Root Normal Form | roots |
| root version | ROSE | Rosette |
| Roskind grammars | rot13 | rotary debugger |
| rotational latency | rotations per minute | ROTFL |
| ROTFLMAO | ROTFLMAOASTC | ROTFLOL |
| round-robin | round tape | round-trip time |
| route | routed | route flapping |
| routeing | routeing domain | route leak |
| router | routine | routing |
| Routing Information Protocol | routing policy | Routing Table Maintenance Protocol |
| row | Row Address Strobe | row-level locking |
| Royal Veterinary and Agricultural University | RPC | RPG |
| RPG-II | RPI | RPL |
| RPL-1 | RPM | rpm |
| RPN | Répondez s'il vous plait | RPT |
| RRL | RRS | RS |
| RS-232 | RS-232C | RS-232D |
| RS-422 | RS-423 | RS-449 |
| RS-485 | RS6000 | RS/6000 |
| RS6K | RSA | RSA Data Security, Inc. |
| RSA encryption | RSCS | Réseaux Associés pour la Recherche Européenne |
| Réseaux IP Européens | RS flip-flop | rsh |
| RSI | RSL | RSN |
| RSS | RSS feed | rstat |
| RSTS/E | RSVP | RT-11 |
| RTBM | RTC++ | RT-CDL |
| RTEE | RTF | RTFAQ |
| RTFB | RTFM | RTFM.Humanitarian |
| RTFS | RTI | RTL |
| RTL/1 | RTL/2 | RTM |
| RTMP | RTOS | RTP |
| RT-PC | RTS | RTSA |
| RTSP | RTT | RTTI |
| RTTY | ru | rubi |
| Ruby | rude | RUFL |
| run | RUNCIBLE | run commands |
| runes | runic | run-length encoding |
| Run Length Limited | run time | run-time environment |
| run-time error | run-time library | run-time support |
| run-time system | Run-Time Type Information | ruptime |
| RUSH | Russell | Russell, Bertrand |
| Russell's Attic | Russell's Paradox | rusty iron |
| rusty memory | RUTH | rw |
| rwho | RWP | Rx |
| RYFM | S | s/// |
| S3 | SA | sa |
| SA-110 | SAA | Saber-C |
| Saber-C++ | SAC | SAC-1 |
| SAC2 | sacadm | sacred |
| SAD | SAD SAM | SADT |
| SAFARI | safe | safe mode |
| safety | safety-critical system | saga |
| sagan | SAGE | SAIC |
| SAID | SAIL | SAINT |
| Saint Andrews Static Language | SAL | SALEM |
| Sales Automation | salescritter | Sales Force Automation |
| S-ALGOL | SALT | salt |
| salt mines | salt substrate | SAM |
| sam | SAM76 | Samba |
| SAME | same-day service | SAMeDL |
| samizdat | SAML | Sammet, Jean E. |
| sample | sample rate | sampling |
| sampling frequency | samurai | SAN |
| sandbender | sandbox | Sandman |
| San Francisco | sanity check | Santa Cruz Operation |
| SAP | SAP AG | SAPI |
| SAR | SAS | SASD |
| SASE | SASI | SASL |
| SASL+LV | SASL-YACC | SAS System |
| SATA | SATAN | Sather |
| Sather-K | satisfiability problem | saturation |
| Saturday-night special | sausage code | SAVE |
| save | save as | say |
| sb | SB AWE32 | SBCS |
| SBD | SBE | SBM |
| SB-Prolog | SBR | SBus |
| SC | sc | SCA |
| SCADA | scag | scalability |
| Scalable Coherent Interface | Scalable Processor ARChitecture | Scalable Sampling Rate |
| Scalable Vector Graphics | scalar | SCALLOP |
| SCAN | scan | scan design |
| SCANDISK | Scan-EDF | scanf |
| Scan-In, Scan-Out | scan line | scanner |
| scanno | scan path | scan register |
| scar tissue code | SCC | SCCS |
| SCEPTRE | Schachter's Hypothesis | scheduler |
| scheduling | Scheduling API | Scheduling Application Programming Interface |
| Schelog | schema | Schema Definition Set |
| Schema Representation language | schematic capture | schematic type variable |
| Schematik | Scheme | Scheme84 |
| Scheme88 | Scheme->C | Scheme Library |
| Scheme-Linda | Scheme Object System | Scheme Repository |
| Scheme-to-C | Schlaer-Mellor | Schoonschip |
| schrödinbug | SCI | Science and Engineering Research Council |
| Scientific Data Systems | Sci-Hub | SCL |
| SCM | SC/MP | SCO |
| Scode | SCOOP | SCOOPS |
| SCOPE | scope | Scorpion |
| Scott-closed | Scott domain | SCPI |
| SCPI Consortium | scram switch | SCRAP |
| scratch | scratch disk | scratch monkey |
| Scratchpad I | Scratchpad II | scream and die |
| Screamer | screaming tty | screen |
| screen blanker | screen dump | Screen Peace |
| screen popping | screen reader | screen refresh |
| screen saver | screen scraper | screen server |
| screen sharing | Screenwrite | screw |
| screwage | scribble | Scribe |
| SCRIPT | script | Scriptics |
| scripting language | scrog | SCROLL |
| scroll | scrollable list | scroll bar |
| scrolling | scrool | scrozzle |
| scruffies | SCSI | SCSI-1 |
| SCSI-2 | SCSI-3 | SCSI adapter |
| SCSI adaptor | SCSI controller | SCSI ID |
| SCSI initiator | SCSI interface | SCSI reconnect |
| SCSI target | ScumOS | scuzzy |
| SD | sd | sdcv |
| SDDI | SDE | SDF |
| SDH | SDI | SDK |
| SDL | SDL 92 | SDLC |
| SDM | SDMS | SDP |
| SDRAM | SDRC | SDR-RAM |
| SDR-SDRAM | SDS | SDS 92 |
| SDS 940 | SDSL | SE |
| se | SEA | Seagate Technology |
| SEAL | search | search algorithm |
| search-and-destroy mode | search engine | search problem |
| search term | Search The Fucking Web | SEC |
| SECC | SECD machine | secondary cache |
| secondary damage | secondary key | secondary storage |
| second generation | second generation computer | second generation language |
| second level cache | second normal form | Second-Order Lambda-calculus |
| second-system effect | sector interleave | sector interleaving |
| sector map | sector mapping | Secure File Transfer Protocol |
| Secure Hash Algorithm | Secure Multipurpose Internet Mail Extensions | Secure Shell |
| Secure Sockets Layer | security | Security Administrator's Integrated Network Tool |
| Security Association | Security Association ID | security through obscurity |
| security vulnerability | SED | Sed |
| SEE | seed | seek |
| seeking | seek time | SEESAW |
| see u see me | SEGA | Sega Genesis/MegaDrive |
| segfault | seggie | segment |
| segmentation | segmentation and reassembly | segmentation fault |
| segmented address space | segv | SEI |
| Seiko RC-4000 | SEL | Selective Dissemination of Information |
| selector | Self | Self-Extensible Language |
| Self Extracting Archive | self-reference | selvage |
| SEM | semantic gap | semantic network |
| semantics | semaphore | semi |
| Semi-Automatic Ground Environment | semicolon | semiconductor |
| Semidetached Mode | SENDIT | sendmail |
| sendmail.cf | Sendmail Inc. | Seneca |
| senior bit | sense | sensor |
| sentence | SE-ODP | SEP |
| separate compilation | SEPIA | SEPP |
| Seque | Sequel | sequence |
| Sequenced Packet Exchange | sequencer | Sequent |
| sequential coding | sequential file matching | Sequential Parlog Machine |
| sequential processing | SERC | SERCOS |
| serial | Serial Advanced Technology Attachment | Serial ATA |
| serial communications | Serial Communications Interface | Serial Interface adapter |
| serial IO chip | serialise | serialize |
| serial line | Serial Line Internet Protocol | Serial Line IP |
| Serial Peripheral Interface | serial port | Serial Presence Detect |
| serial processing | serial processor | Serial Storage Architecture |
| serve | servelet | server |
| serverlet | Server Message Block | server-parsed HTML |
| server room | servers | server-side |
| server-side include | service | serviceability |
| Service Access Point | Service Advertising Protocol | Service Discovery Protocol |
| service-oriented architecture | service provider | Service Set Identifier |
| servlet | session | Session Initiation Protocol |
| session layer | SES/workbench | SET |
| set | set abstraction | set associative cache |
| set complement | set comprehension | Set Equation Transformation System |
| Setext | SETL | SETL2 |
| SETL/E | Set Priority Level | SETS |
| set theory | set-top box | SEUS |
| seven layer model | Seven-Segment Display | SEX |
| sexadecimal | sex changer | SEXI |
| Seymour Cray | SFA | SFBI |
| SFD-ALGOL | SFFA | SFL |
| SFLV | sFTP | sg |
| SGCP | SGI | SGML |
| sgmls | SGML Tagger | SGRAM |
| sh | SHA | SHACO |
| SHADOW | shadowing | shadow ram |
| shallow binding | shambolic link | Shape_VC |
| ShapeTools | shar | sharchive |
| sharding | Share and enjoy! | shared memory |
| Shared Time Repair of Big Electronic Systems | shareware | shar file |
| sharp | Sharp APL | S-HDSL |
| shebang | SHEEP | shelf |
| shelfware | SHELL | shell |
| shell out | shell script | shell variable |
| shielded twisted pair | SHIFT | Shift In |
| shift left logical | Shift Out | shift right logical |
| shim | shitogram | Shockwave |
| shockwave | Shockwave Flash | shopbot |
| short card | Short Code | shortcut |
| Shorten | shortest job first | Short Message Service |
| shotgun debugging | shoulder surfing | shovelware |
| Show-And-Tell | showstopper | shriek |
| shrug report | sht | SHTF |
| shtml | Shub-Internet | SHUG |
| Shugart, Alan F. | Shugart Associates | Shugart Technology |
| SI | si | SIA |
| SIBO | SICL | SICS |
| SICStus Prolog | sidecar | side-effect |
| Siemens | Siemens Nixdorf Informationssteme, AG | Sierra |
| SIFT | SIG | Sig |
| sig | sig block | SIGBUS |
| SIGhyper | SIGLA | SIGMA |
| SIGNAL | signal | signalling rate |
| Signalling System 7 | signal-to-noise ratio | signature |
| sig quote | sig virus | SIL |
| Silage | silicon | silicon chip |
| Silicon Graphics, Inc. | Siliwood | silly walk |
| silo | Silver Book | silver bullet |
| SIM | SIMAN | SimCity |
| SimCity 2000 | SIMD | Similix |
| SIML/I | SIMM | Simone |
| Simonyi, Charles | SIMPAC | SIMPAS |
| SIMPL | SIMPLE | Simple Actor Language |
| Simple Authentication and Security Layer | Simple Gateway Control Protocol | Simple Mail Transfer Protocol |
| simple multicast protocol | Simple Network Management Protocol | Simple Network Management Protocol version 2 |
| Simple Network Paging Protocol | Simple Object Access Protocol | simplex |
| simplex method | simplex printer | SIMPL/I |
| Simplified Multicast Routing Protocol | SIMPL-T | SIMSCRIPT |
| SIMSCRIPT I.5 | SIMSCRIPT II.5 | simship |
| SIMULA | SIMULA 67 | SIMULA I |
| simulate | simulated annealing | Simulating Digital Systems |
| simulation | SIMulation ANalysis | Simulation Language for Alternative Modeling |
| Simulation Oriented Language | Simultaneous Engineering Environment | Simultaneous Peripheral Operation On-Line |
| simultaneous shipment | Simware, Inc. | SINA |
| since time T equals minus infinity | Sinclair, Clive | Sinclair PC200 |
| Sinclair Radionics | Sinclair Research | sine wave |
| single assignment | single assignment language | single-attached |
| Single Connection Attach | Single Connector Attachment | Single Data Rate Random Access Memory |
| Single Data Rate Synchronous Dynamic Random Access Memory | Single Document Interface | single-duplex |
| Single Edge Contact | Single Edge Contact Cartridge | Single Edge Processor Package |
| single-electron transistor | Single Electron Tunneling | Single Electron Tunneling Technology |
| single ended | Single Image Random Dot Stereogram | single inheritance |
| Single In-line Memory Module | Single Inline Pin Package | Single Instruction Multiple Data |
| Single Instruction/Multiple Data | Single-line Digital Subscriber Line | single-page web application |
| Single-pair High Speed Digital Subscriber Line | single program/multiple data | single quote |
| single sign-on | single sourcing | single static assignment |
| singleton variable | Single Virtual Storage | siod |
| SIP | SIPB | SIPLAN |
| SIPP | SI prefix | Siprol |
| SIR | SIRDS | Siri |
| SIRTS | SISAL | sit |
| SITBOL | site map | sitename |
| SIxteen Bit Organisers | sj | sk |
| Skel-ML | Sketchpad | S/Key |
| Skill | Skim | SkipJack |
| SKOL | skolemisation | S-K reduction machine |
| skrog | SKsh | SKU |
| skulker | SL | sl |
| SL5 | slack | slackware |
| SLAM | SLANG | S-Lang |
| slap on the side | slash | slashdot effect |
| slave tty | SLD resolution | sleep |
| SLIB | Slide | sliding-window |
| SLIM | slim | Slingshot |
| SLIP | SlipKnot | SLIPS |
| SLiRP | SLLIC | slog |
| Sloop | slop | slopsucker |
| slosh | Slot 1 | Slot 2 |
| Slot A | slurp | sm |
| smail | SMALGOL | SMALL |
| Small Business Edition | Small-C | Small Computer System Interface |
| small-office/home-office | Small Outline DIMM | Smalltalk |
| Smalltalk-80 | Smalltalk/V | SmallVDM |
| SMALLWORLD | SmallWorld | Smarandache logic |
| SMART | smart | Smart Battery Data |
| smart card | Smartdrive | SMARTdrv |
| smart terminal | smash case | smash sum |
| smash the stack | SMB | smbclient |
| smblib | SMBus | SMCC |
| SMDS | SMG | SMI |
| SMIL | smiley | smilies |
| S-MIME | SML | SML# |
| sml2c | SML/NJ | SMM |
| SMNP | smoke | smoke and mirrors |
| smoke-emitting diode | smoke test | smoking clover |
| SMoLCS | SMOP | SMP |
| SMPS | SMPT | SMRP |
| SMS | SMT | SMTP |
| smug report | smurf | sn |
| SNA | snacc | snaf |
| SNAFU principle | snag | snail mail |
| SNAP | snap | snap dump |
| Snappy | Snappy Video Snapshot | snarf |
| snarf & barf | snarf down | snark |
| sneakernet | sneck | snert |
| SNI | Sniff | sniff |
| sniffer | snivitz | SNMP |
| SNMP agent | SNMPv2 | SNOBOL |
| SNOBOL2 | SNOBOL3 | SNOBOL4 |
| SNOOPS | SNPP | SNR |
| S/N ratio | SNR bandwidth product | SO |
| so | SO 2 | SOA |
| SOAP | SOAR | social engineering |
| social network | social networking | social science number |
| socket | Socket 1 | Socket 2 |
| Socket 3 | Socket 370 | Socket 4 |
| Socket 5 | Socket 6 | Socket 7 |
| Socket 8 | SOCKS | SOCRATIC |
| SODA | SODAS | SO-DIMM |
| Sod's Law | SOE | SoftBench |
| soft boot | softcopy | Softlab |
| soft link | SoftModem | SoftVelocity Inc. |
| software | Software AG | software audit |
| Software BackPlane | software bloat | Software bus |
| software copyright | Software Description Database | Software Developers Kit |
| software development life cycle | software enabling | software engineering |
| Software Engineering Environment | software handshaking | software interrupt |
| Software in the Public Interest, Inc. | software laser | software law |
| software life-cycle | Software Method | Software Methodology |
| software metric | software patent | software piracy |
| software pirate | Software Practice and Experience | Software Productivity Centre |
| Software Publishing Certificate | Software Publishing Corporation | software reliability |
| software rot | software theft | Software through Pictures |
| software tool | Software Verification Research Centre | Software Writer's Language |
| softwarily | softy | SOH |
| SOHIO | SoHo | SOIF |
| SOJ | SOL | Solaris |
| SOLID | solid state | Solid State Disk |
| solid-state storage device | SOLO | solution |
| Solution Based Modelling | Solve | SOM |
| Somar DumpAcl | Somar Software | some random X |
| Sonata | SONET | Sony Playstation |
| SORCERER | sorcerer's apprentice mode | sort |
| sorting | SOS | sound |
| Sound Blaster | sound card | soundex |
| soundness | source | source code |
| source code control | source code escrow | source code management |
| source language | source-level debugger | source of all good bits |
| source package | source route | source routing |
| southbridge | SP | SP2 |
| SP/2 | space | space bar |
| space-cadet keyboard | space complexity | space key |
| space leak | SPACEWAR | SPADE |
| spaghetti code | spaghetti inheritance | spaghetti with meatballs code |
| spam | spamdex | spamming |
| spanning tree algorithm | SPAR | SPARC |
| SPARC International, Inc. | SPARCStation | SPARCstation 10 |
| SPARCstation 20 | SPARCsystem 4 | SPARC Xterminal 1 |
| SPARK | SPARK Annotation Language | SPARKS |
| sparse | Spatial Technologies | spawn |
| SPC | SPD | SPDL |
| SPE | Speakeasy | speaker |
| SPEC | Spec | spec |
| SPECbase_fp92 | SPECbase_int92 | SPECbaserate |
| SPEC CFP92 | SPEC CINT92 | SPECfp92 |
| SPECIAL | special-case | Special Interest Group |
| specialisation | specification | specific markup |
| SPECint92 | SPECmark | SPECmark89 |
| SPECOL | SPEC rate | SPECrate_base_fp92 |
| SPECrate_fp92 | SPECrate_int92 | SPEC ratio |
| Spectral Band Replication | Spectrum | speculative evaluation |
| speculative execution | Speech Application Programming Interface | speech recognition |
| Speech Recognition Application Program Interface | speech synthesis | SPEED |
| Speedcoding | Speedcoding 3 | SPEEDEX |
| speedometer | spell | spelling flame |
| Sperry Corporation | Sperry Univac | SPG |
| SPGA | SPI | Spice Lisp |
| SPID | spider | Spiderweb |
| spiffy | spike | spill |
| spim | spin | spin control |
| spinner | spiral model | SPIT |
| SPITBOL | spiware | SP/k |
| SPL | SPL/1 | SPLash! |
| splash screen | splat | SPL/I |
| SPLINTER | split | Split-C |
| splot | SPLX | SPM |
| SPMD | SPML | spod |
| spoiler | sponge | spoo |
| spoof | spoofing | spooge |
| SPOOL | Spool | spool |
| spooler | spool file | SpoolView |
| spray | spreadsheet | spread spectrum communications |
| SPRING | SPRINT | Sprintnet |
| Sprite | sprite | sprocket feed |
| SPS | SPSS | SPSS, Inc. |
| SPUR | SPX | spx |
| spyware | SQE | SQL |
| SQL2 | SQL3 | SQL Access Group |
| SQL/DS | SQL Module Language | SQL Server |
| SQL server | SQLWindows | SQR |
| SQRIBE | Square | square-headed boyfriend |
| square-headed girlfriend | square tape | Squeak |
| Squiggol | squirt the bird | SR |
| sr | SRAM | SRAPI |
| S. R. Bourne | SRC Modula-3 | SRDL |
| SR flip-flop | SRI | SRI International |
| SRL | SRP | SS7 |
| SSA | SSADM | SSBA |
| SSD | SSE | SSE-2 |
| ssh | SSH File Transfer Protocol | SSI |
| SSID | SSII | SSL |
| S/SL | SSLeay | SSMA |
| SSO | SSR | st |
| ST-506 | STAB | STAB-11 |
| stable | stable sort | STAC |
| stac compression | stack | Stack Environment Control Dump machine |
| stack frame | stacking order | stack loader |
| stack overflow | stack pointer | stack puke |
| stack traceback | STAGE2 | Staggered Pin Grid Array |
| staircase | staircasing | stale pointer bug |
| Stalker | stalker_portal | stalker_portal/c/version.js |
| Stallman, Richard M. | stand-alone | standard |
| Standard Commands for Programmable Instruments | Standard d'Echange et de Transfert | standard deviation |
| standard for robot exclusion | Standard for the exchange of product model data | Standard Generalised Markup Language |
| Standard Generalized Markup Language | standard input/output | Standard Instrument Control Library |
| standard interpretation | standard I/O | Standard Lisp |
| Standard ML | Standard ML of New Jersey | Standard Operating Environment |
| standard semantics | Standard Widget Toolkit | St Andrews Static Language |
| Stanford Artificial Intelligence Laboratory | Stanford Artificial Intelligence Language | Stanford Research Institute |
| Stanford University | STAPLE | Staple |
| STAR 0 | StarBurst | StarDict |
| StarDict console version | StarLISP | StarMOD |
| star network | Starset | STARSYS |
| start bit | start of authority | Start Of Header |
| Start Of Text | start tag | stat |
| state | state diagram | stateless |
| state machine | statement | state transition diagram |
| State University of New York | static | statically typed |
| static analysis | static database management system | static DBMS |
| static link | static method | static nested scope |
| static nested scoping | static RAM | static random-access memory |
| static scope | static typing | static variable |
| Station Management | Statistical Analysis System | Statistical Package for the Social Sciences |
| statistical time division multiplexing | statistics | StatMUX |
| status | STB | STD |
| STD 1 | STD 13 | STD 15 |
| STD 2 | STD 9 | stderr |
| stdin | stdio | stdio.h |
| STDM | stdout | STDWIN |
| steam-powered | Steelman | steganography |
| stemmer | stemming | STENSOR |
| STEP | Stephen Cole Kleene | Stephen Jobs |
| Stephen Kleene | stepper motor | Stepstone Corp |
| stepwise refinement | stereogram | Sterling Software, Inc. |
| Steve Jobs | Steve's Shell | Steve Wozniak |
| STFT | STFU | STFW |
| Sticks&Stones | sticky analysis | sticky bit |
| sticky content | stiffy | STIL |
| STING | STk | STMP |
| stochastic | stock-keeping unit | STOIC |
| stomp on | STONE | Stone Age |
| stone knives and bearskins | Stoneman | stop bit |
| stoppage | storage | Storage Allocation and Coding Program |
| Storage Area Network | Storage Management Services | storage media |
| store | store and forward | stored procedure |
| storm | Story of Mel | STP |
| StP | STP4 | Strachey, Christopher |
| Strand | Strand88 | Stratus |
| Strawman | STREAM | stream |
| streaming | Streaming SIMD Extensions | stream-oriented |
| STREAMS | strength reduction | STRESS |
| stress testing | strict | strict evaluation |
| strided | string | String EXpression Interpreter |
| stringly typed | STring Oriented Interactive Compiler | String Oriented Symbolic Language |
| String PRocessING language | string reduction | stripe |
| stripe set | striping | STROBES |
| stroke | StrongARM | strongly connected component |
| strongly typed | strong typing | Stroustrup, Bjarne |
| struct | structural recursion | structured analysis |
| Structured Analysis and Design Technique | structured design | structure diagram |
| structured language | structured programming | Structured Query Language |
| Structure of Management Information | strudel | STRUDL |
| STSC APL | stty | stub |
| stub network | stubroutine | STUDENT |
| Student PL/I | studly | studlycaps |
| Stuffit | Stupids | stupid-sort |
| Sturgeon's Law | STX | style |
| su | SUB | subband encoding |
| subclass | subject | subject index |
| subject-oriented programming | sublanguage | subnet |
| subnet address | subnet mask | subnet number |
| subroutine | subscribe | Subscriber Identity Module |
| subscribing | Subset-Equational Language | Substitute |
| substrate | subtype | subtyping |
| SuccessoR | successor | sucking mud |
| Sue | sufficiently small | SUGAR |
| suicideware | SUIF | suit |
| suitably small | Suite Synthetique des Benchmarks de l'AFUU | sum |
| Summary Object Interchange Format | SUMMER | SUMMER SESSION |
| sum of products | sum of products type | Sun |
| Sun-2 Workstation | Sun-3 Workstation | Sun-4 Workstation |
| sun lounge | Sun Microsystems, Inc. | SunOS |
| sunspots | sun-stools | SunView |
| SUNY | SUPER | Super 7 |
| Superbrain | SuperBrain II | superclass |
| supercombinators | supercompilation | supercomputer |
| SuperDrive | superhighway | SuperJanet |
| SUPERMAC | super minicomputer | SuperPaint |
| Super Pascal | superpipelined | superprogrammer |
| superscalar | super source quench | SuperTalk |
| superuser | Super VGA | Super Video Graphics Adapter |
| Super Video Graphics Adaptor | Super Video Graphics Array | supervisor mode |
| Supervisory Control and Data Acquisition | SuperZap | Supplementary Ideographic Plane |
| support | supremum | Sure |
| surfing | SURGE | surjection |
| surjective | surrogate key | suspension |
| Suzie COBOL | sv | SVC |
| SVG | SVGA | SVGA monitor |
| SVID | S-Video | SVR4 |
| SVRC | SVS | swab |
| SWAG | swap | swap file |
| swapped in | swapped out | swapping |
| swap space | Sweden | SweetLambda |
| swf | Swing | SWI-Prolog |
| Swiss Army Code | switch | Switched Multimegabit Data Service |
| switched virtual circuit | switched virtual connection | switching |
| switching hub | switch statement | swizzle |
| SWL | SWT | swung dash |
| sy | Sybase, Inc. | Sybase SQL Server |
| SYDEL | SYGMA | SYLK |
| syllogism | Sylvan | Symantec |
| SYMBAL | SymbMath | SYMBOLANG |
| Symbolic Assembler Program | SYMBOLIC ASSEMBLY | Symbolic Automatic INTegrator |
| symbolic inference | Symbolic Link | symbolic link |
| symbolic logic | Symbolic Mathematical Laboratory | symbolic mathematics |
| Symbolic Optimal Assembly Program | Symbolic Optimum DEUCE Assembly Program | Symbolics, Inc. |
| Symbol Manipulation Program | symlink | symmetric |
| symmetric key cryptography | Symmetric LISP | symmetric multiprocessing |
| symmetric multiprocessor | Symphony | SYMPL |
| SYN | sync | Synchronized Multimedia Integration Language |
| synchronous | Synchronous Data Link Control | Synchronous Digital Hierarchy |
| Synchronous DRAM | Synchronous Dynamic Random Access Memory | Synchronous Graphics RAM |
| Synchronous Graphics Random Access Memory | Synchronous idle | synchronous key encryption |
| Synchronous Optical NETwork | syncronous | synflood |
| synonym ring | syntactic salt | syntactic sugar |
| syntax | Syntax-Case | syntax directed translation |
| Syntax/Semantic Language | syntax tree | synthesis |
| Synthesizer Specification Language | sypware | SyQuest Technology, Inc. |
| sysadmin | sysape | Sysdeco Mimer AB |
| sys-frog | SYSKEY | SYSLISP |
| sysop | Sysplex | sysprog |
| system | System/360 | System/370 |
| System 5 | System 7.5 | System Account Manager |
| system administration | system administrator | system analysis |
| system analyst | system board | system call |
| system catalog | System Control Language | Systeme International |
| System F | System International | system management |
| System Management Bus | System Management Mode | System Management Server |
| system manager | system mangler | system operator |
| System Product Interpreter | system programming language | System R |
| Systems Administrators Guild | systems analysis | Systems Analysis Definition |
| systems analyst | Systems Application Architecture | Systems Development Life Cycle |
| systems jock | Systems Network Architecture | system software |
| systems operator | systems programmer | systems programming |
| system testing | system unit | System V |
| System V Interface Definition | Système International | Système International d'Unités |
| systolic array | SysVile | sz |
| T | T1 | T1 line |
| T1 rate | T3 | T3 line |
| TA | TAA | TAB |
| table | table locking | tablespace |
| TABLET | TABLOG | tab-separated values |
| TABSOL | Tabulating Machine Company | TAC |
| TACL | TACPOL | Tactile User Interface |
| tag | Tagged Image File Format | tagged queueing |
| tagged types | tag name | tail call optimisation |
| tail call optimization | tail circuit | tail recursion |
| tail recursion modulo cons | tail recursion optimisation | tail-strict |
| TAL | TALE | Taligent |
| talk | talk bomb | talker system |
| talk mode | TALL | tall card |
| Tandem Application Language | Tandem Computers | Tandy |
| Tanenbaum, Andrew | Tangible User Interface | tanked |
| TANSTAAFL | TAO | TAOS |
| TAP | tap | tape |
| tape archive | tape drive | tape head |
| Tape Operating System | TAPI | tar |
| tar and feather | tarball | targa |
| Targa Graphics Adapter | target | Target-Machine Description Language |
| TARTAN | taskbar | Task Control Block |
| task scheduling | TASM | TASS |
| taste | tatar | tau |
| tautological probability | tautological set | tautology |
| TAWK | Taxis | tayste |
| taz | TB | TBF |
| TBIL | TBK | Tbl |
| tc | T-carrier system | TCB |
| TCGS | TC/IX | Tcl |
| Tcl Consortium | tcl-debug | Tcl-DP |
| tclhttpd | TclX | TCM |
| TCO | Tcode | TCOL |
| TCOL.Ada | TCP | TCPIP |
| TCP/IP | tcsh | Tcsim |
| TCVN 5773 | TCVN 6056 | td |
| TDD | TDEL | TDF |
| TDFL | TDI | TDM |
| TDMA | TDR | Teamwork |
| Technical/Office Protocol | Technion | technology |
| Technology Enabled Relationship Manager | Technology of Object-Oriented Languages and Systems | TechRef |
| TECO | tee | TEI |
| telco | TELCOMP | Telecommunication Display Device |
| Telecommunications Device for the Deaf | Telecommunications Industry Association | telecommuting |
| teledildonics | telegraphy | telematics |
| TelEnet | TELEPAC | Telephone Application Program Interface |
| telephony | Telephony Application Programming Interface | Telephony User Interface |
| Telerat | Telescope User Interface | Telescript |
| Teletype | teletype | Teletype Corporation |
| teletypewriter | TeleUSE | television |
| Television Interface Adapter | TELNET | Telocator Alphanumeric Protocol |
| Telon | TELOS | TELSIM |
| template | template code | template wizard |
| TEMPLOG | TEMPO | Tempo |
| temporal database | temporal logic | Tempura |
| Ten15 | tendinitis | TenDRA |
| ten-finger interface | tennis elbow | tense |
| tensor product | tenured graduate student | tera- |
| terabyte | teraflop | teraflop club |
| TERM | TERMAC | termcap |
| terminak | terminal | Terminal Access Controller |
| Terminal Adapter | Terminal Adaptor | terminal brain death |
| terminal emulation | terminal emulator | terminal illness |
| terminal junkie | terminal node | Terminal Oriented Real Time Operating System |
| Terminal Oriented Social Science | Terminal Productivity eXecutive | terminal server |
| Terminal User Interface | Terminate and Stay Resident | termination analysis |
| terminator | term rewriting system | Terms Of Service |
| ternary | terpri | terrabyte |
| Terse | test | test coverage |
| test-driven development | testing | TET |
| TeX | TeX-78 | TeX-82 |
| Texas Instruments | Texinfo | TeX point |
| text | text-based | text editor |
| Text Encoding Initiative | text file | Text Processing Utility |
| Text Reckoning And Compiling | text segment | Text To Speech |
| Textual User Interface | texture | tf |
| TFDL | TFT | TFTP |
| tg | TGA | T-gen |
| TGS-II | TGS Systems | tgz |
| th | thanks in advance | That's not a bug, that's a feature! |
| T.H.E | The Cuckoo's Egg | The Dojo Toolkit |
| The Force | The Internet Account | The MathWorks, Inc. |
| The Metadata Company | The Microsoft Network | The Mythical Man-Month |
| The Network | THEO | theology |
| The Open Group | theory | theory change |
| The Real-Time Operating System Nucleus | There's More Than One Way To Do It | Theseus |
| The story of Mel | The story of Mel, a Real Programmer | The World Of Cryton |
| the X that can be Y is not the true X | thicket | thick Ethernet cable |
| thick film dielectric electroluminescence | thicknet | thin client |
| thin Ethernet cable | ThingLab | Think C |
| Thinking Machines Corporation | thinko | thinnet |
| third generation computer | third generation language | third normal form |
| This can't happen | this dictionary | This time, for sure! |
| thn | Thomas | thrash |
| thrashing | thread | threaded |
| threaded code | threading | Thread Language Zero |
| thread-safe | three-finger salute | three-letter acronym |
| three-tier | throughput | thud |
| Thumb | thumb | thumbnail |
| Thunderbird | thunk | TIA |
| tick | TickIT | Tickle |
| tickle a bug | tick-list features | TIFF |
| tiger team | tight loop | tilde |
| TILE Forth | Tim Berners-Lee | time bomb |
| time complexity | Time Complex Simulator | time division multiple access |
| time division multiplexing | Time Domain Reflectometer | timeout |
| time quantum | time-sharing | Time Sharing Option |
| time shifting | Time Simulator | time sink |
| time slice | times-or-divided-by | time T |
| Time to Live | time zone | Tim Peters |
| Timsort | TINC | Tinman |
| tinman+ | TINT | tint |
| Tiny | Tiny BASIC | Tiny Basic Interpreter Language |
| Tiny Clos | Tiobe | TIP |
| TIPL | tip of the ice-cube | tired iron |
| tits on a keyboard | tj | Tk |
| tk | TK-90X | TK-95 |
| T. Kohonen | TK!Solver | TL0 |
| TL1 | TLA | TLAs |
| TLB | TLD | TLI |
| TL/I | T Lisp | TLS |
| TLTR | TM | tm |
| TMDL | TMG | TMRC |
| TMRCie | TMS 9900 | tn |
| tn3270 | TNC | TNSTAAFL |
| TNX | TNXE6 | to |
| to a first approximation | toast | toaster |
| toasternet | to a zeroth approximation | toggle |
| TOK | token | token bus |
| token ring | Tomcat | TomeRaider |
| Tom Knight | tone | Tony Hoare |
| tool | toolbar | toolbook |
| Toolbuilder | Tool Builder Kit | Tool Command Language |
| TOOLS | toolsmith | TOP |
| top-down design | Top-Down Model | topic drift |
| topic group | topic map | topic thread |
| top-level domain | topology | TOPS-10 |
| TOPS-20 | Tornado | Toronto Euclid |
| torrent | TORTOS | TOS |
| Toshiba Corporation | TOSS | total function |
| totally ordered | totally ordered set | total ordering |
| toto | touchpad | touch screen |
| tourist | tourist information | Towers of Hanoi |
| Tower Technology Corporation | toy | Toy/Ada |
| toy language | Toyohashi University Parallel Lisp Environment | toy problem |
| toy program | tp | TPA |
| TPF | TP/IX | TPL |
| TPO | TPS | tptc |
| TPU | TPX | tr |
| TRAC | traceroute | trace scheduling |
| track | track ball | tracker ball |
| tracking | tracking cookie | tracking file |
| trackpad | TrackPoint | tractor feed |
| TrafoLa | Trafola-H | trampoline |
| TRANDIR | TRANQUIL | TRANS |
| transaction | Transaction Application Language | Transaction Processing Facility |
| transceiver | TRANSCODE | transducer |
| transfer | transfer full | transfer none |
| transfer of control | transfer rate | transfer syntax |
| transfinite induction | transformation | transient |
| Transient Program Area | transistor | Transistor-Transistor Logic |
| TRANSIT | transition ad | transitive |
| transitive closure | transit network | Translation Look-aside Buffer |
| Transmission Control Protocol | transparent | transparent audio coding |
| Transport Driver Interface | transport layer | Transport Layer Interface |
| Transport Layer Security protocol | Transport Level Interface | Transport Service Access Point |
| transputer | TRANS-USE | trap |
| trap door | trap-door function | trash |
| Trash-80 | traveling salesman problem | travelling salesman |
| travelling salesman problem | traversal | traverse |
| trawl | tree | tree-killer |
| tree shaking | TREET | TREETRAN |
| Tree Transformation Language | treeware | Trellis |
| Trellis Code Modulation | Trident | trigger |
| trigger finger | TRIGMAN | trillion |
| Trilogy | triple DES | tri state |
| trit | Triton | Triton II |
| Triton VX | Trivial File Transfer Protocol | TRO |
| troff | troglodyte | troglodyte mode |
| trojan | Trojan horse | Trojan:Win32/Ymacco.AAB8 |
| TROLL | troll | TRON |
| tron | Trouble Came Back | TRS |
| TRS-80 | Truchet point | True BASIC |
| true colour | true hacker | TRUENAME |
| TrueType | Trumpet | TRUSIX |
| truth table | TS | TSAP |
| TSEE | TSIA | Tsim |
| TSL-1 | TSO | TSP |
| TSR | TSV | tt |
| TTD | TTFN | TTL |
| TTS | tty | TTYL |
| TUB | TUBA | tube |
| tube time | Tuckals | TUI |
| Tukey, John | Tuki | tunafish |
| tune | tunneling | tunnelling |
| Tunny Emulator | TUPLE | tuple |
| tuple calculus | Tuple Space Smalltalk | tupling |
| Turbo C | Turbo C++ | Turbo Debugger |
| turbo nerd | Turbo Pascal | Turbo Prolog |
| Turing | Turing Machine | Turingol |
| Turing Plus | Turing tar-pit | Turing test |
| turist | TURN | turn-key |
| turtle graphics | TUTOR | Tuxedo |
| TV | tv | tw |
| TWAIN | tweak | tweening |
| tweeter | TWENEX | Twente Compiler Generator System |
| Twentel | twiddle | TWIG |
| twilight zone | twink | twinning |
| Twin Vector Quantization | twip | twirling baton |
| twisted pair | twisted pair only | Twitter |
| twm | two-binary, one-quaternary | twonkie |
| two-phase commit | twos complement | two-to-the-N |
| two-valued logic | TX-0 | TXL |
| TYMCOM-X | TYMNET | Tymshare, Inc. |
| type | type-ahead | type-ahead search |
| type assignment | type class | typed lambda-calculus |
| TypedProlog | typeface | type inference |
| type scheme | typo | typographical error |
| typography | TYPOL | typo squatter |
| tyt | TZ | tz |
| ua | UAN | UART |
| UAT | UAW | UBASIC |
| UBD | ubiquitous computing | uC++ |
| UCB | UCHO | U-Code |
| UCP | UCS | UCSD Pascal |
| UCS transformation format | UCX | udb |
| UDDI | UDF | UDMA |
| UDP | uemacs | UFO |
| UFO bug | ug | UGLIAC |
| UHELP | UI | uid |
| UIDL | UIL | UIMS |
| UIMX | UIS | uk |
| UKC | UKERNA | UKUUG Ltd. |
| ULCC | Ulm's Modula-2 System | ULP |
| Ultra64 | Ultra-ATA | Ultra DMA |
| Ultra-SCSI | Ultrix | um |
| UMB | UMB Scheme | UMDL |
| UML | uML | UMTS |
| unary | unary operator | UNC |
| UNCL | UNCOL | uncompression |
| uncountable | uncurry | uncurrying |
| undefined | undefined external reference | underflow |
| Undernet | underscore | under the hood |
| undocumented feature | U-NET Limited | unfold |
| unfold/fold | UNI | unicast |
| Unicode | UniCOMAL | Unicorny |
| unicos | Uniface | unification |
| Unified Han | Unified Modeling Language | unifier |
| UNIFORM | Uniform Naming Convention | Uniform Resource Citation |
| Uniform Resource Locater | Uniform Resource Locator | Uniform Resource Name |
| Uniform Resource Number | Unify | unify |
| Unify Corporation | Unihan | uninstaller |
| uninteresting | Uninterruptible Power Supply | union |
| Unipalm Group plc | Unipress Software, Inc. | uniprocessor |
| UNIQUE | Unique ID Listing | unique key |
| unique sales point | Unir Tech | UNISAP |
| Unisys Corporation | United Kingdom Education and Research Networking Association | United Kingdom Unix Users Group |
| United Technologies Research Cente | Unit Separator | unit testing |
| UNITY | Univac | Universal algebra |
| Universal Asynchronous Receiver/Transmitter | Universal Character Set | Universal Communications X |
| Universal Computer Protocol | Universal Debugger | Universal Description, Discovery, and Integration |
| Universal Disk Format | Universal Naming Convention | universal quantifier |
| Universal Resource Identifier | Universal Resource Locator | Universal Serial Bus |
| universal thunk | Universal Time | Universal Time Coordinated |
| universe of discourse | University of Arizona | University of California at Berkeley |
| University of Durham | University of East London | University of Edinburgh |
| University of Hawaii | University of Iceland | University of London Computing Centre |
| University of Michigan | University of Michigan Digital Library Project | University of Minnesota |
| University of Nijmegen | University of Pennsylvania | University of Tasmania |
| University of Twente | Unix | Unix box |
| Unix brain damage | Unix conspiracy | Unix International |
| Unixism | Unix man page | Unix manual page |
| Unix System V | Unix to Unix Copy | UnixWare |
| Unix weenie | Unix wizard | Unlicense |
| unnormalised | unproto | unshar |
| unshielded twisted pair | unstable | unswizzle |
| until | untyped | unwind-protect |
| unwind the stack | UN*X | unzip |
| up | uparrow | UPenn |
| upgradability | upgrade | upgradeability |
| upload | UPMAIL Tricia Prolog | upper bound |
| Upper Layer Protocol | upper memory block | Upper Side-Band modulation |
| Upright Database Technology AB | UPS | upstream |
| upthread | upward closure | Uranus |
| urban legend | URC | urchin |
| URI | URL | URL forwarding |
| URL redirection | URN | URouLette |
| US | us | usability |
| USAModSim | usa.net | US-ASCII |
| USB | USB 2.0 | USB Adapter Card Support |
| USB drive | USE | Usenet |
| Usenet news | Usenetter | USENIX |
| user | user acceptance testing | user base |
| User Brain Damage | User Datagram Protocol | user experience |
| user-friendly | user id | user identifier |
| user interface | user interface copyright | User Interface Language |
| user name | User Network Interface | user-obsequious |
| user-unctuous | Use the Source Luke | USG Unix |
| usim | USL | USP |
| USR | usr | US Robotics |
| U.S. Robotics, Inc. | USSA | UTC |
| UTF | UTF-8 | utility |
| utility-coder | utility program | utility software |
| UTOPIST | UTP | UTRC |
| UTSL | uucp | UUCPNET |
| uudecode | uuencode | UUNET PIPEX |
| UUPC | UX | uy |
| uz | V | V.10 |
| V.11 | V.17 | V.21 |
| V.22 | V.22bis | V.23 |
| V.24 | V.25 | V.25 bis |
| V.27 ter | V.28 | V.29 |
| V.32 | V.32bis | V.32ter |
| V.34 | V.35 | V.42 |
| V.42bis | V.90 | V.91 |
| va | vacuum tube | vadding |
| VAL | Valencia Simple Tasker | valency |
| Valid | validation | value |
| Value Added Network | value added reseller | value added retailer |
| valve | vampire tap | VAN |
| vanilla | vanity domain | vannevar |
| Vannevar Bush | vaporware | vapourware |
| VAR | var | varchar |
| variable | Variational Graphics eXtended | VAX |
| VAX DOCUMENT | VAXectomy | VAXen |
| vaxherd | vaxism | VAX MIPS |
| vaxocentrism | VAXset | VAXstation |
| VAX/VMS | VB | VBA |
| vbell | VBScript | vbx |
| vc | VCC filtering | VCD |
| VCID | VCL | VCODE |
| VCPI | VCR | vdiff |
| VDL | VDM | VDM++ |
| VDM-SL | VDSL | VDT |
| VDU | vdx | ve |
| vector | Vector C | vector font |
| vector graphics | vector processor | vector space |
| VECTRAN | VEE | veeblefeetzer |
| veeblefester | veeblefetzer | VEL |
| Vendor Independent Messaging | ventilator card | Ventura Publisher |
| Venus flytrap | verbage | verbiage |
| Verdi | verification | Verilog |
| Verilog SA | Veronica | Versa Module Europa |
| version | Version 7 | vertical application |
| vertical bar | vertical encoding | vertical loop combination |
| vertical microcode | Vertical Redundancy Check | vertical refresh rate |
| vertical scan rate | Very Efficient Speculative Parallel Architecture | Very high bit-rate Digital Subscriber Line |
| Very Large Database | Very Large Memory | Very Large Scale Integration |
| Very Long Instruction Word | Very Small Aperture Terminal | VESA |
| VESA Local Bus | VESPA | V.FAST |
| VFAT | V.FC | vg |
| VGA | VGQF | vgrep |
| VGX | VHDL | VHE |
| VHLL | vhost | VHS |
| vi | VIC-20 | victim cache |
| video | video adaptor | video card |
| Video Compact Disc | video compression | video conference |
| video conferencing | video dial tone | video display standard |
| video display terminal | Video Electronics Standards Association | Video Graphics Adapter |
| Video Graphics Adaptor | Video Graphics Array | video memory |
| Video on Demand | video RAM | video random-access memory |
| video terminal | videotex | Vienna Definition Language |
| Vienna Definition Method | Vienna Development Method | Vienna Development Method Specification Language |
| Vienna Fortran | Vietnamese | viewer |
| ViewPoints | Views | VIF |
| Vi Improved | VIM | Vincennes LISP |
| vines | Vine Technology | Vint Cerf |
| Vinton Cerf | Viola | virgin |
| virgule | Viron | virtual |
| virtual 86 mode | virtual address | virtual cache |
| virtual circuit | Virtual Circuit Identifier | virtual connection |
| Virtual Control Program Interface | Virtual Device Driver | Virtual Device Location |
| virtual disk | Virtual Home Environment | virtual host |
| Virtual LAN | Virtual Loadable Module | Virtual Local Area Network |
| Virtual Machine | virtual machine | Virtual Machine/Conversational Monitor System |
| Virtual Machine Environment | Virtual Machine/ESA | virtual machine manager |
| Virtual Machine/System Product | Virtual Machine/XA | virtual memory |
| Virtual Memory System | virtual path | virtual point of presence |
| virtual PoP | Virtual Private Network | virtual reality |
| Virtual Reality Modeling Language | Virtual Sequential Access Method | virtual server |
| virtual shredder | Virtual Software Factory | Virtual Storage Access Method |
| Virtual Storage Extended | Virtual Telecommunications Access Method | virus |
| viruses | visible bell | VisiCalc |
| visionary | visit | Visual BASIC |
| Visual Basic for Applications | Visual BASIC Script | visual bell |
| Visual C++ | Visual Component Library | Visual dBASE |
| Visual Display Unit | Visual FoxPro | Visual Interface |
| visualisation | visual language | visual programming |
| visual programming environment | visual programming language | VisualWorks |
| VITAL | VIVID | viz |
| VLAN | VLB | VLDB |
| Vlisp | VLIW | VLM |
| VLSI | VLSM | VM |
| VM/CMS | VME | VMEbus |
| VME Microsystems International Corporation | VM/ESA | VML |
| VMS | VM/SP | VM/XA |
| vn | vocoder | vocoding |
| VoD | voice mail | voice-net |
| Voice over IP | voice recognition | VoIP |
| volatile | volatile memory | volatile storage |
| volatile variable | voltage | Volume Table Of Contents |
| von Neumann architecture | von Neumann integer | von Neumann, John |
| von Neumann machine | von Neumann ordinal | voodoo programming |
| Voronoi diagram | Voronoi polygon | VOS |
| Voters Telecommunications Watch | voxel | V.pcm |
| VPL | VPN | VP-Planner |
| VQF | VR | VRAM |
| VRC | Vrije Universiteit, Amsterdam | VRML |
| VRTX | VSAM | VSAT |
| VSCM | VSE | V series |
| VSF | VSP | VSTa |
| VSX | VT | vt100 |
| vt220 | VTAM | VTC |
| VTOC | VTS | VTW |
| vu | VUE | VUIT |
| VULCAN | Vulcan death grip | Vulcan nerve pinch |
| vulnerability | vulture capitalist | VUP |
| VxD | VXI | VxWorks |
| W2K | W3 | W3C |
| W3 Consortium | WA-12 | wabbit |
| Wabi | WabiServer | wacco |
| Wafe | WAFL | WAIS |
| WAITS | wait state | waldo |
| walk | walking drives | walk off the end of |
| wall | wall clock time | wall follower |
| wallpaper | wall plate | wall time |
| WAM | WAN | Wang Laboratories |
| wango | Wang PC | wank |
| wannabee | want list | WAP |
| WAP Forum | warchalk | Ward Christensen |
| Ward Cunnigham | wardialer | wardriving |
| warez | WarGames | warlording |
| warm boot | Warm Silence Software | Warp |
| wart | washing machine | Wasserman |
| WATBOL | Watcom C/C++ | Watcom International |
| Watcom SQL | Watcom VX*REXX | Waterfall Model |
| water MIPS | WATFIV | WATFOR |
| wav | WAVE | wave a dead chicken |
| wave division multiplexing | Waveform Generation Language | wavelength division multiplexing |
| wavelet | wavetable | wavetable synthesis |
| WaZOO | wb | WBEM |
| WBMP | WBS | WCDMA |
| WCL | WD | WDASM |
| WDM | WE | Weak Head Normal Form |
| weakly typed | weak typing | weasel |
| web | Web 2.0 | web2c |
| web address | web authoring | Web-Based Enterprise Management |
| web browser | webcam | webcasting |
| WebCGM | WebCOMAL | web consortium |
| web cramming | WebCrawler | WebDAV |
| Web Distributed Authoring and Versioning | webhead | web host |
| web hosting | WEB - language | weblint |
| web log | web mail | webmaster |
| webmistress | webmonkey | WebObjects |
| web page | web proxy | Web Request Broker |
| web server | Web Service Definition Language | Web Services |
| Web Services Business Process Execution Language | website | web smith |
| Webster | Webster's Dictionary | wedged |
| wedgie | wedgitude | Weeble |
| weeds | weenie | Weenix |
| weighted search | well-behaved | well-connected |
| well-known port | well-ordered set | WEP |
| Wesley Clark | Western Digital Corporation | Westmount |
| wetware | wf | WFL |
| WfMC | WFW | WFWG |
| WG | WGL | whack |
| whacker | whales | whalesong |
| whatis | What's a spline? | What You Get Is What You Never Thought You Had |
| What You See Is All You Get | What You See Is What You Get | wheel |
| wheel bit | wheel wars | When It's Done |
| Whetstone | Which Stands For Nothing | while |
| while loop | Whirlwind | White Book |
| White book CD-ROM | white box testing | White pages |
| white paper | white point | Whitesmiths style |
| whitespace | white trash | WHNF |
| whois | whole number | Whopper |
| WHQL | WIBNI | WIC |
| Wide Area Information Servers | Wide Area Network | Wide Area Telecommunications Service |
| Wideband ATM | Wide SCSI | widget |
| wi-fi | Wi-Fi Protected Access | Wi-Fi Protected Access Pre-Shared Key |
| wiggles | wiki | WiLAN |
| Wild_LIFE | wild card | Wilf Hey |
| William Gibson | William Hamilton | William Joy |
| WIMP | WIMP environment | win |
| Win2K | Win32 | Win32s |
| WIN386.SWP | Win 95 | Win 98 |
| winchester | windowing | windowing system |
| window manager | Window RAM | Window Random Access Memory |
| Windows | Windows 1 | Windows 2 |
| Windows 2000 | Windows/286 | Windows 2K |
| Windows 3.0 | Windows 3.1 | Windows 3.11 |
| Windows/386 | Windows 4GL | Windows 94 |
| Windows 95 | Windows 98 | Windows 9X |
| Windows Application Binary Interface | Windows CE | Windows for Workgroups |
| Windows for Workgroups 3.1 | Windows for Workgroups 3.11 | Windows Hardware Quality Labs |
| window shopping | Windows Internet Naming Service | Windows Management Interface |
| Windows ME | Windows Messaging | windows messaging |
| Windows Millennium Edition | Windows NT | Windows NT 3.1 |
| Windows NT 3.5 | Windows NT 4 | Windows NT 5 |
| Windows NT Network Model | Windows Open Service Architecture | Windows Registry |
| Windows sockets | Windows XP | Windows XP Pro |
| Windows XP Professional Edition | window system | Windoze |
| Wind River Systems | winged comments | winkey |
| WinMaker Pro | WINS | Winsock |
| WinSoft Products Ltd | wintel | WINZIP |
| wired | Wired Equivalent Privacy | wirehead |
| wireless | Wireless Application Protocol | wireless bitmap |
| Wireless Encryption Protocol | wireless hotspot | wireless local area network |
| Wireless Local Loop | Wireless Transport Layer Security | wirewater |
| WISCII | wish list | Wisp |
| within delta of | within epsilon of | wizard |
| Wizard Book | wizardly | wizard mode |
| WizDOM | wk1 | WLAN |
| WLL | WMA | wmf |
| WMI | WML | WMV |
| WNPP | WO | Wolfram Research, Inc. |
| WOM | woman | WOMBAT |
| wombat | wombat.doc.ic.ac.uk | WonderPop |
| Woodenman | woofer | WOOL |
| Worcester Polytechnic Institute | Word | word |
| Word for Windows | WordNet | WordPerfect |
| WordPerfect Corporation | word processing | word processor |
| word size | word spamming | WordTech |
| word wrap | workaround | Work Breakdown Structure |
| workflow | Workflow Management Coalition | workgroup |
| working as designed | working memory | working set |
| working set model | Work Needed and Prospective Packages | work path |
| worksheet | workstation | World Time |
| World-Wide Wait | World-Wide Web | World Wide Web Consortium |
| World Wide Web Worm | WORM | worm |
| wormhole | wormhole routing | WOSA |
| WOSA Extensions for Financial Systems | WOSA/XFS | wound around the axle |
| WPA | WPA Pre-Shared Key | WPA-PSK |
| WPG | WPI | WPL+ |
| wp-login.php | WPOP | wps |
| WRAM | wrap around | wrapper |
| wrats nest | wrb | write |
| WRITEACOURSE | write-back | write buffer |
| Write-Once Read-Many | write-only code | write-only language |
| write-only memory | write protect | write-through |
| write-thru | writing system | Wrong Thing |
| WRT | ws | WSBPEL |
| WSDL | WSFN | WSL |
| WTF | WTFPL | WTH |
| WTLS | Wumpus | WWW |
| WWW browser | WWWW | WYGIWYNTYH |
| WYSIAYG | WYSIWYG | WYSWYG |
| X | X-1 | X11R4 |
| X11R5 | X11R6 | X.12 |
| X2 | X.208 | X.209 |
| X.21 | X.214 | X.215 |
| X.216 | X.217 | X.219 |
| X.224 | X.225 | X.226 |
| X.227 | X.229 | X.25 |
| X.28 | X.29 | X.3 |
| X3J16 | X3T10 | X.400 |
| X.409 | X.500 | X.680 |
| X.75 | x86 | x86 processor socket |
| XA | Xaw | Xbase |
| xbeeb | xbm | XC |
| X client | X Consortium | Xcoral |
| xdbx | X-Designer | X.desktop |
| XDL | XDR | XDS 530 |
| XDS 940 | xDSL | Xemacs |
| XENIX | Xeon | xerox |
| XEROX Corporation | Xerox Data Systems Model 530 | Xerox Data Systems Model 940 |
| XEROX Network Services | Xerox Network System | XEROX PARC |
| Xerox Star | XFree86 Project, Inc. | XFS |
| Xfun | XGA | XGA-2 |
| XHTML | Xi | XIE |
| Xilinx, Inc. | Xilinx Netlist Format | X Image Extension |
| Xlib | xlisp | xls |
| XML | xmlrpc.php | XML schema |
| XML Template Pages | XML User-Interface Language | XMM |
| XMODEM | XMODEM-1K | xmosaic |
| XMS | XNF | xnf2ver |
| XNS | XOFF | XON |
| XON/XOFF | Xopen | X/Open |
| X/open Portability Guide | X/Open System Interface | xor |
| XP | XPC | XperCASE |
| XPG | XPG3 | XPL |
| xpm | XPOP | XP Pro |
| Xpress Transport Protocol | X protocol | xref |
| XRemote | XRN | XSB |
| XScheme | x-scm | XSD |
| X server | XSI | XSL |
| XSLT | XT | Xt |
| XT bus architecture | xterm | X terminal |
| XTI | XTP | XTP Forum |
| XTRAN | XUI | XUL |
| Xv++ | XVGA | XView |
| XVT | X-Windows | X Window System |
| XWIP | xxgdb | XXX |
| Xy-pic | xyzzy | Y |
| Y2K | YA- | Yaa |
| YABA | yacc | YADE |
| YAFIYGI | YAGNI | Yahoo |
| Yale Haskell | Yamaha | YAML |
| YAML Ain't Markup Language | yank | YAPS |
| YASOS | YAUN | Yay |
| ye | Year 2000 | Yellow |
| Yellow Book | Yellow Book CD-ROM | Yellow Book, Jargon |
| Yellow Box | Yellow Pages | yellow wire |
| Yerk | Yet Another | Yet Another Compiler Compiler |
| Yet Another Scheme Object System | Yet Another Yacc | YGMTPO |
| YLISP | YMMV | YMODEM |
| YMODEM-G | yocto- | Yoda condition |
| YOL Computers | yotta- | yottabyte |
| You are not expected to understand this | You aren't gonna need it | Yourdon |
| Yourdon/Constantine | Yourdon/Demarco | Yourdon, Inc. |
| Yourdon methodology | Your mileage may vary | youtube.com |
| YouTube, Inc. | Yow! | yoyo mode |
| YP | YSM | yt |
| YTalk | yu | Yu-Shiang Whole Fish |
| Z | Z++ | Z-1013 |
| Z180 | Z3 | Z39.50 |
| Z8 | Z80 | Z8000 |
| za | ZAP | zap |
| ZAPP | Z-buffer | ZEBRA |
| Zed | Zen | zen |
| ZENO | zepto | Zermelo Fränkel set theory |
| Zermelo set theory | ZERO | zero |
| Zero and Add Packed | zero assignment | zero-content |
| Zero Insertion Force | zeroth | ZEST |
| ZetaLisp | zetta- | zettabyte |
| Zeus | ZFC | ZF expression |
| ZIF | zigamorph | ZIL |
| Zilog | Zilog Z280 | Zilog Z8 |
| Zilog Z80 | Zilog Z8000 | Zilog Z80000 |
| Zilog Z80A | zip | Zipcode |
| Zip disc | Zip disk | Zip Drive |
| zip file | zip function | zipped |
| zipped file | zipperhead | zm |
| ZMODEM | ZOG | ZOLA Technologies |
| zombie | zombie process | zone |
| Zoo | zoo | zoom |
| Zoomer | ZOPL | zorch |
| Zork | zorkmid | z/OS |
| zr | zsh | Z shell |
| ZUG | Zulu time | ZUSE |
| Zuse | Zuse, Konrad | zw |
| ZX-80 | ZX-81 | zxnrbl |
| ZX Spectrum | Zynet Ltd. | ZyXEL |
| { | {$formKeywords} | {IDF} |
| {log} | {searchTerms} | | |
| } | ~ | ~# |
| £ | µCurse | |
