List of computing and IT abbreviations

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There are many abbreviations associated with the computer industry — PC, IT, CPU etc. Add them to this listing, sorted alphabetically by abbreviation. Internet slang gives rise to a number of abbreviations not listed here, as do many common file extensions and file formats.

Contents

0–9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z


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[edit] 0–9

[edit] A

  • AA — Anti-Aliasing
  • AAA — Authentication Authorization, Accounting
  • AABB — Axis Aligned Bounding Box
  • AAC — Advanced Audio Coding (audio compression format defined by the MPEG-2 standard)
  • AAL — ATM Adaptation Layer
  • AALC — ATM Adaptation Layer Connection
  • AARP — AppleTalk Address Resolution Protocol
  • ABI — Application Binary Interface
  • ABM — Asynchronous Balanced Mode
  • ABR — Area Border Router
  • ABR — Auto Baud — Rate Detect
  • ABR — Available Bit Rate
  • AC — Alternating Current
  • AC — Acoustic Coupler
  • ACID — Atomiticy Consistency Isolation Durability
  • ACL — Access Control List
  • ACL — Active Current Loop
  • ACM — Association for Computing Machinery
  • ACPI — Advanced Configuration and Power Interface
  • ACD — Automatic Call Distributor
  • ACF — Advanced Communications Function
  • ACF NCP — Advanced Communications Function — Network Control Program
  • ACK — ACKnowledgement
  • ACR — Allowed Cell Rate
  • ACR — Attenuation to Crosstalk Ratio
  • AD — Active Directory
  • AD — Administrative Domain
  • ADC — Analog-To-Digital Converter
  • ADC — Apple Display Connector (DVI variant)
  • ADB — Apple Desktop Bus
  • ADCCP — Advanced Data Communications Control Protocol/Procedures
  • ADO — ActiveX Data Objects
  • ADSL — Asymmetric Digital Subscriber Line (variant of DSL)
  • AE — Adaptive Equalizer
  • AES — Advanced Encryption Standard
  • AF — Anisotropic Filtering
  • AFP — Apple Filing Protocol
  • AGP — Accelerated Graphics Port (sometimes used with a suffix indicating the port's bandwidth, like AGP4x)
  • AH — Active Hub
  • AI — Artificial Intelligence
  • AIX — Advanced Interactive Executive
  • Ajax — Asynchronous JavaScript and XML
  • AL — Active Link
  • AL — Access List
  • ALGOL — Algorithmic Language
  • ALSA — Advanced Linux Sound Architecture
  • ALU — Arithmetic and Logical Unit
  • AM — Active Matrix
  • AM — Access Method
  • AM — Active Monitor
  • AM — Amplitude Modulation
  • AMD — Advanced Micro Devices
  • AMR — Audio Modem Riser
  • ANN — Artificial Neural Network
  • ANSI — American National Standards Institute
  • ANT — Another Neat Tool
  • AoE — ATA over Ethernet
  • AOP — Aspect-Oriented Programming
  • APCI — Application-Layer Protocol Control Information
  • API — Application Programming Interface
  • APIC — Advanced Programmable Interrupt Controller
  • APIPA — Automatic Private IP Addressing
  • APL — A Programming Language
  • APS — Accunet Packet Service
  • APR — Apache Portable Runtime
  • ARM — Advanced RISC Machines
  • ARP — Address Resolution Protocol
  • ARPA — Address and Routing Parameter Area
  • ARPA — Advanced Research Projects Agency (see also DARPA)
  • ARPANET — Advanced Research Projects Agency Network
  • AS — Access Server
  • ASCII — American Standard Code for Information Interchange
  • ASG — Abstract Semantic Graph
  • ASIC — Application Specific Integrated Circuit
  • ASMP (computing) — Asymmetric Multiprocessing
  • ASN.1 — Abstract Syntax Notation 1
  • ASP — Application Service Provider
  • ASP (MS ASP) — Active Server Pages
  • AST — Abstract Syntax Tree
  • ASSP — Application Specific Standard Product
  • AT — Advanced Technology
  • AT — Access Time
  • AT — Active Terminator
  • ATA — Advanced Technology Attachment
  • ATAG — Authoring Tool Accessibility Guidelines
  • ATAPI — Advanced Technology Attachment Packet Interface
  • ATM — Asynchronous Transfer Mode
  • AVC — Advanced Video Coding
  • AVI — Audio Video Interleaved
  • AWT — Abstract Windowing Toolkit

[edit] B

  • B2B — Business-to-Business
  • B2C — Business-to-Consumer
  • Bash — Bourne-again shell
  • BASIC — Beginner's All-Purpose Symbolic Instruction Code
  • BBP — Baseband Processor
  • BBS — Bulletin Board System
  • BCD — Binary Coded Decimal
  • BEEP — Blocks Extensible Exchange Protocol
  • BER — Bit Error Rate
  • BFD — Binary File Descriptor
  • BFS — Breadth-First Search
  • BGP — Border Gateway Protocol
  • BiDi — Bi-Directional
  • bin — binary
  • BINAC — Binary Automatic Computer
  • BIND — Berkeley Internet Name Daemon
  • BIOS — Basic Input Output System
  • BJT — Bipolar Junction Transistor
  • bit — binary digit
  • Blog — Web Log
  • BMP — Basic Multilingual Plane
  • BNC — Bayonet Neill-Concelman
  • BOINC — Berkeley Open Infrastructure for Network Computing
  • BOOTP — Bootstrap Protocol
  • BPEL — Business Process Execution Language
  • BPL — Broadband over Power Lines
  • bps — bits per second
  • BRR — Business Readiness Rating
  • BSA — Business Software Alliance
  • BSD — Berkeley Software Distribution (Unix variant)
  • BSS — Block Started by Symbol
  • BT — BitTorrent
  • BTAM — Basic Telecomunications Acess Method (an IBM OS/360 API)
  • BTKATC — Between The Keyboard And The Chair; An acronym commonly used in the Technical Support Realm and in other IT instances. An error referring to the source of a linguistic or programming error. Also spelled "BCAK" (Between Chair And Keyboard).
  • BW — Bandwidth

[edit] C

  • CA — Certificate Authority
  • CAD — Computer-Aided Design
  • CAE — Computer-Aided Engineering
  • CAID — Computer Aided Industrial Design
  • CAI — Computer-Aided Instruction
  • CAM — Computer-Aided Manufacturing
  • CAPTCHA — Completely Automated Public Turing Test to tell Computers and Humans Apart
  • CAQ — Computer Aided Quality
  • CASE — Computer-Aided Software Engineering
  • cc — C Compiler
  • CD — Compact Disc
  • CDE — Common Desktop Environment
  • CDMA — Code Division Multiple Access
  • CDP — Continuous Data Protection
  • CD-R — CD-Recordable
  • CD-ROM — CD Read-Only Memory
  • CD-RW — CD-Rewritable
  • CERT — Computer Emergency Response Team
  • CFWS — Comment and/or Folding White Space
  • CES — Consumer Electronics Show
  • CF — Compact Flash
  • CFD — Computational Fluid Dynamics
  • CFG — Context-Free Grammar
  • CFG — Control Flow Graph
  • CG — Computer Graphics
  • CGA — Color Graphics Array
  • CGI — Common Gateway Interface
  • CGI — Computer-Generated Imagery
  • CGT — Computational Graph Theory
  • CHAP — Challenge-Handshake Authentication Protocol
  • CHS — Cylinder-Head-Sector
  • CIFS — Common Internet Filesystem
  • CIM — Common Information Model
  • CISC — Complex Instruction Set Computer
  • CJK — Chinese, Japanese, and Korean
  • CJKV — Chinese, Japanese, Korean, and Vietnamese
  • CLI — Command Line Interface
  • CLR — Common Language Runtime
  • CM — Configuration Management
  • CM — Content Management
  • CMOS — Complementary Metal-Oxide Semiconductor
  • CMS — Content Management System
  • CN — Canonical Name
  • CN — Common Name
  • CNC — Computer Numerical Control
  • CNR — Communications and Networking Riser
  • COBOL — Common Business-Oriented Language
  • COM — Component Object Model
  • CORBA — Common Object Request Broker Architecture
  • COTS — Commercial Off-The-Shelf
  • CPA — Cell Processor Architecture
  • CPA — Control Panel Applet
  • CPA — Converged Packet Access
  • CPAN — Comprehensive Perl Archive Network
  • CP/M — Control Program/Monitor
  • cps — characters per second
  • CPU — Central Processing Unit
  • CR — Carriage Return
  • CRAN — Comprehensive R Archive Network
  • CRC — Cyclic Redundancy Check
  • CRLF — Carriage Return Line Feed
  • CRM — Customer Relationship Management
  • CRT — Cathode Ray Tube
  • CS — Cable Select
  • CS — Computer Science
  • CSE — Computer Science and Engineering
  • CSRF — Cross-Site Request Forgery
  • CSS — Cascading Style Sheets
  • CSS — Content-Scrambling System
  • CSS — Closed Source Software
  • CSS — Cross-Site Scripting
  • CSV — Comma-Separated Values
  • CT — Computerized Tomography
  • CTAN — Comprehensive TeX Archive Network
  • CTCP — Client-To-Client Protocol
  • CTI — Computer Telephony Integration
  • CTS — Clear To Send
  • CTSS — Compatible Time-Sharing System
  • CUA — Common User Access
  • CVS — Concurrent Versioning System

[edit] D

  • DAC — Digital-To-Analog Converter
  • DAC — Discretionary Access Control
  • DAO — Data Access Objects
  • DAO — Disk-At-Once
  • DAP — Directory Access Protocol
  • DARPA — Defense Advanced Research Projects Agency
  • DAT — Digital Audio Tape
  • DB — Database
  • DBA — Database Administrator
  • DBCS — Double Byte Character Set
  • DBMS — Database Management System
  • DCC — Direct Client-to-Client
  • DCCA — Debian Common Core Alliance
  • DCL — Data Control Language
  • DCMI — Dublin Core Metadata Initiative
  • DCOM — Distributed Component Object Model
  • DD — Double Density
  • DDE — Dynamic Data Exchange
  • DDL — Data Definition Language
  • DDoS — Distributed Denial of Service
  • DDR — Double Data Rate
  • DEC — Digital Equipment Corporation
  • DES — Data Encryption Standard
  • dev — device
  • DFA — Deterministic Finite Automaton
  • DFD — Data Flow Diagram
  • DFS — Depth-First Search
  • DHCP — Dynamic Host Configuration Protocol
  • DHTML — Dynamic HTML
  • DIMM — Dual Inline Memory Module
  • DIN — Deutsches Institut für Normung
  • DIP — Dual In-line Package
  • DIVX — Digital Video Express
  • DKIM — Domain Keys Identified Mail
  • DL — Download
  • DLL — Dynamic Link Library
  • DLP — Digital Light Processing
  • DMA — Direct Memory Access
  • DMCA — Digital Millennium Copyright Act
  • DML — Data Manipulation Language
  • DMR — Dennis M. Ritchie
  • DN — Distinguished Name
  • DND — Drag-and-Drop
  • DNS — Domain Name System
  • DOCSIS — Data Over Cable Service Interface Specification
  • DOM — Document Object Model
  • DoS — Denial of Service
  • DOS — Disk Operating System
  • DP — Dot Pitch
  • DPI — Dots Per Inch
  • DPMI — DOS Protected Mode Interface
  • DPMS — Display Power Management Signaling
  • DRAM — Dynamic Random Access Memory
  • DRI — Direct Rendering Infrastructure
  • DRM — Digital Rights Management
  • DRM — Direct Rendering Manager
  • DSDL — Document Schema Definition Languages
  • DSDM — Dynamic Systems Development Method
  • DSL — Digital Subscriber Line
  • DSL — Domain-Specific Language
  • DSLAM — Digital subscriber line access multiplexer
  • DSN — Database Source Name (ODBC)
  • DSN — Dataset Name? (OS/390)
  • DSP — Digital Signal Processor
  • DSSSL — Document Style Semantics and Specification Language
  • DTD — Document Type Definition
  • DTE — Data Terminal Equipment
  • DTP — Desktop Publishing
  • DTR — Data Terminal Ready
  • DVD — Digital Versatile Disc
  • DVD — Digital Video Disc
  • DVD-R — DVD-Recordable
  • DVD-ROM — DVD-Read Only Memory
  • DVD-RW — DVD-Rewritable
  • DVI — Digital Visual Interface
  • DVR — Digital Video Recorder (see also PVR)

[edit] E

  • EAI — Enterprise Application Integration
  • EAP — Extensible Authentication Protocol
  • EBCDIC — Extended Binary Coded Decimal Interchange Code
  • EBML — Extensible Binary Meta Language
  • ECC — Elliptic Curve Cryptography
  • ECMA — European Computer Manufacturers Association
  • EDI — Electronic Data Interchange
  • EDO — Extended Data Out
  • EDSAC — Electronic Delay Storage Automatic Computer
  • EDVAC — Electronic Discrete Variable Automatic Computer
  • EEPROM — Electronically-Eraseable Programmable Read-Only Memory
  • EFF — Electronic Frontier Foundation
  • EFI — Extensible Firmware Interface
  • EFM — Eight-to-Fourteen Modulation
  • EGA — Enhanced Graphics Array
  • EGP — Exterior Gateway Protocol
  • eID — electronic ID card
  • EIDE — Enhanced IDE
  • EIGRP — Enhanced Interior Gateway Routing Protocol
  • EISA — Extended Industry Standard Architecture
  • ELF — Extremely Low Frequency
  • ELF — Executable and Linkable Format
  • ELM — Electronic Mail
  • EMACS — Editor Macros
  • EMS — Expanded Memory Specification
  • ENIAC — Electronic Numerical Integrator And Computer
  • EOF — End of File
  • EOL — End of Life
  • EOL — End of Line
  • EOM — End of Message
  • EPROM — Eraseable Programmable Read-Only Memory
  • ERP — Enterprise Resource Planning
  • ESCON — Enterprise Systems Connection
  • ESD — Electrostatic Discharge
  • ETL — Extract, Transform, Load
  • ESR — Eric Steven Raymond
  • EUC — Extended Unix Code
  • EULA — End User License Agreement

[edit] F

  • FAP — FORTRAN Assembly Program
  • FAT — File Allocation Table
  • FAQ — Frequently Asked Questions
  • FBDIMM — Fully Buffered Dual Inline Memory Module
  • FCB — File Control Block
  • FDD — Floppy Disk Drive
  • FDDI — Fiber Distributed Data Interface
  • FDMA — Frequency-Division Multiple Access
  • FEC — Forward Error Correction
  • FEMB — Front-End Motherboard
  • FET — Field Effect Transistor
  • FICON — Fiber Connectivity
  • FIFO — First In First Out
  • FHS — Filesystem Hierarchy Standard
  • FLAC — Free Lossless Audio Codec
  • FLOPS — FLoating-Point Operations Per Second
  • FLOSS — Free/Libre/Open Source Software
  • FOLDOC — Free On-line Dictionary of Computing
  • FOSDEM — Free and Open source Software Developers' European Meeting
  • FOSI — Formatted Output Specification Instance
  • FOSS — Free and Open Source Software
  • FPGA — Field Programmable Gate Array
  • FPU — Floating Point Unit
  • FS — File System
  • FSB — Front Side Bus
  • FSF — Free Software Foundation
  • FSM — Finite State Machine
  • FTTC — Fiber To The Curb
  • FTTH — Fiber To The Home
  • FTTP — Fiber To The Premises
  • FTP — File Transfer Protocol
  • FQDN — Fully Qualified Domain Name
  • FUCT — Failed Under Continuous Test
  • FUD — Fear Uncertainty Doubt
  • FWS — Folding White Space

[edit] G

  • G11N — Globalization
  • Gb — Gigabit
  • GB — Gigabyte
  • GCC — GNU Compiler Collection (formerly GNU C Compiler)
  • GCJ — GNU Compiler for Java
  • GCR — Group Code Recording
  • GDB — GNU Debugger
  • GDI — Graphics Device Interface
  • GFDL — GNU Free Documentation License
  • GIF — Graphics Interchange Format
  • GIGO — Garbage In, Garbage Out
  • GIMP — GNU Image Manipulation Program
  • GIMPS — Great Internet Mersenne Prime Search
  • GIS — Geographic Information System
  • GLUT — OpenGL Utility Toolkit
  • GNOME — GNU Network Object Model Environment
  • GNU — GNU's Not Unix
  • GOMS — Goals, Operators, Methods, and Selection rules
  • GPG — GNU Privacy Guard
  • GPGPU — General-Purpose Computing on Graphics Processing Units
  • GPIB — General-Purpose Instrumentation Bus
  • GPL — General Public License
  • GPL — General-Purpose Language
  • GPRS — General Packet Radio Service
  • GPT — GUID Partition Table
  • GPU — Graphics Processing Unit
  • GRUB — Grand Unified Boot-Loader
  • GSM — Global System for Mobile Communications
  • GTK+ — GIMP Toolkit
  • GUI — Graphical User Interface
  • GUID — Globally Unique IDentifier
  • GWT — Google Web Toolkit

[edit] H

  • HAL — Hardware Abstraction Layer
  • HBA — Host Bus Adapter
  • HCI — Human Computer Interaction
  • HD — High Density
  • HDD — Hard Disk Drive
  • HD-DVD — High Definition DVD
  • HDL — Hardware Description Language
  • HF — High Frequency
  • HHD — Hybrid Hard Drive
  • HID — Human Interface Device
  • HIG — Human Interface Guidelines
  • HIRD — Hurd of Interfaces Representing Depth
  • HMA — High Memory Area
  • HP — Hewlett-Packard
  • HPC — High-Performance Computing
  • HPFS — High Performance File System
  • HT — Hyper Threading
  • HTM — Hierarchical Temporal Memory
  • HTML — Hypertext Markup Language
  • HTTP — Hypertext Transport Protocol
  • HTTPd — Hypertext Transport Protocol Daemon
  • HTX — HyperTransport eXpansion
  • HURD — Hird of Unix-Replacing Daemons
  • HVD — Holographic Versatile Disc
  • Hz — Hertz

[edit] I

  • I2C — Inter-Integrated Circuit
  • I18N — Internationalization
  • IANA — Internet Assigned Numbers Authority
  • iBCS — Intel Binary Compatibility Standard
  • IBM — International Business Machines
  • IC — Integrated Circuit
  • ICANN — Internet Corporation for Assigned Names and Numbers
  • ICE — In-Circuit Emulator
  • ICE — Intrusion Countermeasure Electronics
  • ICMP — Internet Control Message Protocol
  • ICP — Internet Cache Protocol
  • ICT — Information and Communication Technology
  • IDE — Integrated Development Environment
  • IDE — Integrated Drive Electronics
  • IDL — Interface Definition Language
  • IE — Internet Explorer
  • IEC — International Electrotechnical Commission
  • IEEE — Institute of Electrical and Electronics Engineers
  • IETF — Internet Engineering Task Force
  • IFL — Integrated Facility for Linux
  • IGMP — Internet Group Management Protocol
  • IGRP — Interior Gateway Routing Protocol
  • IHV — Independent Hardware Vendor
  • IIOP — Internet Inter-Orb Protocol
  • IIS — Internet Information Services
  • IM — Instant Messaging
  • IMAP — Internet Message Access Protocol
  • IME — Input Method Editor
  • INFOSEC — Information Systems Security
  • I/O — Input/Output
  • IP — Intellectual Property
  • IP — Internet Protocol
  • IPC — Inter-Process Communication
  • IPL — Initial Program Load
  • IPP — Internet Printing Protocol
  • IPsec — Internet Protocol security
  • IPX — Internetwork Packet Exchange
  • IRC — Internet Relay Chat
  • IrDA — Infrared Data Association
  • IRQ — Interrupt Request
  • IS — Information Systems
  • ISA — Industry Standard Architecture
  • ISAM — Indexed Sequential Access Method
  • ISDN — Integrated Services Digital Network
  • ISO — International Organization for Standardization
  • ISP — Internet Service Provider
  • ISPF — Interactive System Productivity Facility
  • ISV — Independent Software Vendor
  • IT — Information Technology
  • ITU — International Telecommunication Union

[edit] J

  • J2CE — Java 2 Cryptographic Edition
  • J2EE — Java 2 Enterprise Edition
  • J2ME — Java 2 Micro Edition
  • J2SE — Java 2 Standard Edition
  • JAXB — Java Architecture for XML Binding
  • JAX-RPC — Java XML for Remote Procedure Calls
  • JAXP — Java API for XML Processing
  • JBOD — Just a Bunch of Disks
  • JCL — Job Control Language
  • JCP — Java Community Process
  • JDBC — Java Database Connectivity
  • JDK — Java Development Kit
  • JDS — Java Desktop System
  • JFC — Java Foundation Classes
  • JFET — Junction Field-Effect Transistor
  • JFS — IBM Journaling Filesystem
  • JINI — Jini Is Not Initials
  • JIT — Just-In-Time
  • JMX — Java Management Extentions
  • JMS — Java Message Service
  • JNDI — Java Naming and Directory Interface
  • JNI — Java Native Interface
  • JPEG — Joint Photographic Experts Group
  • JRE — Java Runtime Environment
  • JS — JavaScript
  • JSON — JavaScript Object Notation
  • JSP — Jackson Structured Programming
  • JSP — JavaServer Pages
  • JTAG — Joint Test Action Group
  • JUG — Java Users Group
  • JVM — Java Virtual Machine
  • jwz — Jamie Zawinski

[edit] K

  • K&R — Kernighan and Ritchie
  • KB — Keyboard
  • Kb — Kilobit
  • KB — Kilobyte
  • KB — Knowledge Base
  • KDE — K Desktop Environment
  • kHz — Kilohertz
  • KISS — Keep It Simple, Stupid
  • KVM — Keyboard, Video, Mouse

[edit] L

  • L10N — Localization
  • LAMP — Linux Apache MySQL (Perl, PHP, or Python)
  • LAN — Local Area Network
  • LBA — Logical Block Addressing
  • LCD — Liquid Crystal Display
  • LCOS — Liquid Crystal On Silicon
  • LDAP — Lightweight Directory Access Protocol
  • LE — Logical Extents
  • LED — Light-Emitting Diode
  • LF — Line Feed
  • LF — Low Frequency
  • LFS — Linux From Scratch
  • lib — library
  • LIF — Low Insertion Force
  • LIFO — Last In First Out
  • LILO — Linux Loader
  • LKML — Linux Kernel Mailing List
  • LM — LanManager
  • LGPL — [GNU] Lesser General Public License
  • LOC — Lines of Code
  • LPI — Linux Professional Institute
  • LSB — Least Significant Bit
  • LSB — Linux Standard Base
  • LSI — Large-Scale Integration
  • LTR — Left-to-Right
  • LUG — Linux User Group
  • LUN — Logical Unit Number
  • LV — Logical Volume
  • LVM — Logical Volume Management
  • LZW — Lempel-Ziv-Welch

[edit] M

  • MAC — Mandatory Access Control
  • MAC — Media Access Control
  • MAN — Metropolitan Area Network
  • MANET — Mobile Ad-Hoc Network
  • MAPI — Messaging Application Programming Interface
  • Mb — Megabit
  • MB — Megabyte
  • MBCS — Multi Byte Character Set
  • MBR — Master Boot Record
  • MCA — Micro Channel Architecture
  • MCSA — Microsoft Certified System Administrator
  • MCSD — Microsoft Certified System Developer
  • MCSE — Microsoft Certified System Engineer
  • MDA — Mail Delivery Agent
  • MDA — Model-Driven Architecture
  • MDA — Monochrome Display Adapter
  • MDI — Multiple Document Interface
  • ME — [Windows] Millennium Edition
  • MF — Medium Frequency
  • MFC — Microsoft Foundation Classes
  • MFM — Modified Frequency Modulation
  • MGPT — Machine Generated Problem Tracking
  • MHz — Megahertz
  • MICR-Magnetic Ink Character Reader
  • MIDI — Musical Instrument Digital Interface
  • MIMD — Multiple Instruction, Multiple Data
  • MIPS — Million Instructions Per Second
  • MIPS — Microprocessor without Interlocked Pipeline Stages
  • MIS — Management Information Systems
  • MISD — Multiple Instruction, Single Data
  • MIT — Massachusetts Institute of Technology
  • MIME — Multipurpose Internet Mail Extensions
  • MMI — Man Machine Interface.
  • MMIO — Memory-Mapped I/O
  • MMORPG — Massively Multiplayer Online Role-Playing Game
  • MMU — Memory Management Unit
  • MMX — Multi-Media Extensions
  • MNG — Multiple-image Network Graphics
  • MoBo — Motherboard
  • MOO — MUD Object Oriented
  • MOSFET — Metal-Oxide Semiconductor FET
  • MOTD — Message Of The Day
  • MPAA — Motion Picture Association of America
  • MPEG — Motion Pictures (Coding) Experts Group
  • MPL — Mozilla Public License
  • MPU — Microprocessor Unit
  • MS — Memory Stick
  • MS — Microsoft
  • MSB — Most Significant Bit
  • MS-DOS — Microsoft DOS
  • MT — Machine Translation
  • MTA — Mail Transfer Agent
  • MTU — Maximum Transmission Unit
  • MSA — Mail Submission Agent
  • MSDN — Microsoft Developer Network
  • MSI — Medium-Scale Integration
  • MUA — Mail User Agent
  • MUD — Multi-User Dungeon
  • MVC — Model-View-Controller
  • MVP — Most Valuable Professional
  • MVS — Multiple Virtual Storage
  • MX — Mail exchange

[edit] N

  • NACK — Negative ACKnowedgement
  • NAK — Negative AcKnowedgement Character
  • NAS — Network-Attached Storage
  • NAT — Network Address Translation
  • NCP — NetWare Core Protocol
  • NCQ — Native Command Queuing
  • NCSA — National Center for Supercomputing Applications
  • NDPS — Novell Distributed Print Services
  • NDS — Novell Directory Services
  • NEP — Network Equipment Provider
  • NEXT — Near-End CrossTalk
  • NFA — Nondeterministic Finite Automaton
  • GNSCB — Next-Generation Secure Computing Base
  • NFS — Network Filesystem
  • NI — National Instruments
  • NIC — Network Interface Card
  • NIM — No Internal Message
  • NIO — New I/O
  • NIST — National Institute of Standards and Technology
  • NLP — Natural Language Processing
  • NLS — National Language Support
  • NP — Non-Deterministic Polynomial-Time
  • NPL — Netscape Public License
  • NPU — Network Processing Unit
  • NS — Netscape
  • NSA — National Security Agency
  • NSPR — Netscape Portable Runtime
  • NMI — Non-Maskable Interrupt
  • NNTP — Network News Transfer Protocol
  • NOC — Network Operations Center
  • NOP — No OPeration
  • NOS — Network Operating System
  • NSS — Novell Storage Service
  • NSS — Network Security Services
  • NSS — Name Service Switch
  • NT (Windows) — New Technology
  • NTFS — NT Filesystem
  • NTLM — NT Lan Manager
  • NTP — Network Time Protocol
  • NUMA — Non-Uniform Memory Access
  • NURBS — Nonuniform Rational B-Spline
  • NVRAM — Non-Volatile Random Access Memory

[edit] O

  • OASIS — Organization for the Advancement of Structured Information Standards
  • ODBC — Open Database Connectivity
  • OEM — Original Equipment Manufacturer
  • OFTC — Open and Free Technology Community
  • OLAP — Online Analytical Processing
  • OLE — Object Linking and Embedding
  • OLED — Organic Light Emitting Diode
  • OLPC — One Laptop per Child
  • OLTP — Online Transaction Processing
  • OMG — Object Management Group
  • OO — Object-Oriented
  • OO — Open Office
  • OOo — OpenOffice.org
  • OOP — Object-Oriented Programming
  • OPML — Outline Processor Markup Language
  • ORB — Object Request Broker
  • OS — Open Source
  • OS — Operating System
  • OSCON — O'Reilly Open Source Convention
  • OSDN — Open Source Developer Network
  • OSI — Open Source Initiative
  • OSI — Open Systems Interconnection
  • OSPF — Open Shortest Path First
  • OSS — Open Sound System
  • OSS — Open-Source Software
  • OSS — Operational Support Systems
  • OSTG — Open Source Technology Group (formerly OSDN)
  • OUI — Organizationally Unique Identifier

[edit] P

  • P2P — Peer-To-Peer
  • PAN — Personal Area Network
  • PAP — Password Authentication Protocol
  • PARC — Palo Alto Research Center
  • PATA — Parallel ATA
  • PC — Personal Computer
  • PCB — Printed Circuit Board
  • PCB — Process Control Block
  • PCI — Peripheral Component Interconnect
  • PCIe — PCI Express
  • PCMCIA — Personal Computer Memory Card International Association
  • PCM — Pulse-Code Modulation
  • PCRE — Perl Compatible Regular Expressions
  • PD — Public Domain
  • PDA — Personal Digital Assistant
  • PDF — Portable Document Format
  • PDP — Programmed Data Processor
  • PE — Physical Extents
  • PEBKAC — "Problem Exists Between Keyboard And Chair"
  • PERL — Practical Extraction and Reporting Language
  • PGA — Pin Grid Array
  • PGP — Pretty Good Privacy
  • PHP — PHP: Hypertext Preprocessor
  • PIC — Peripheral Interface Controller
  • PID — Proportional-Integral-Derivative
  • PID — Process ID
  • PIM — Personal Information Manager
  • PINE — Program for Internet News & Email
  • PIO — Programmed Input/Output
  • PKCS — Public Key Cryptography Standards
  • PKI — Public Key Infrastructure
  • PLC — Power Line Communication
  • PLC — Programmable Logic Controller
  • PLD — Programmable Logic Device
  • PL/I — Programming Language One
  • PL/M — Programming Language for Microcomputers
  • PL/P — Programming Language for Prime
  • PLT — Power Line Telecoms
  • PMM — Personal Memory Manager
  • PMM — POST Memory Manager
  • PNG — Portable Network Graphics
  • PnP — Plug-and-Play
  • PoE — Power over Ethernet
  • POP — Point of Presence
  • POP3 — Post Office Protocol v3
  • POSIX — Portable Operating System Interface
  • POST — Power-On Self Test
  • PPC — PowerPC
  • PPI — Pixels Per Inch
  • PPP — Point-to-Point Protocol
  • PPPoA — PPP over ATM
  • PPPoE — PPP over Ethernet
  • PPTP — Point-to-Point Tunneling Protocol
  • PS — PostScript
  • PS/2 — Personal System/2
  • PSU — Power Supply Unit
  • PSVI — Post-Schema-Validation Infoset
  • PV — Physical Volume
  • PVG — Physical Volume Group
  • PVR — Personal Video Recorder
  • PXE — Pre Execution Environment
  • PXI — PCI Extensions for Instrumentation

[edit] Q

  • QDR — Quad Data Rate
  • QA — Quality Assurance
  • QFP — Quoted For Permanence.
  • QoS — Quality of Service
  • QOTD — Quote of the Day
  • Qt — Quasar Toolkit
  • QTAM — Queued Telecomunications Acess Method (an IBM OS/360 API)

[edit] R

  • RACF — Resource Access Control Facility
  • RAD — Rapid Application Development
  • RADIUS — Remote Authentication Dial In User Service
  • RAID — Redundant Array of Independent Disks
  • RAID — Redundant Array of Inexpensive Disks
  • RAR — Type of archive file run on WinRAR
  • RDM — Relations Database Management
  • RDS — Relations Database System
  • RAIT — Redundant Array of Inexpensive Tapes
  • RAM — Random Access Memory
  • RARP — Reverse Address Resolution Protocol
  • RC — Release Candidate
  • RC — Run Commands
  • RC — Runtime Configuration
  • RCS — Revision Control System
  • RDBMS — Relational Database Management System
  • RDF — Resource Description Framework
  • REFAL — REcursive Functions Algorithmic Language
  • REST — Representational State Transfer
  • regex — Regular Expression
  • RF — Radio Frequency
  • RFC — Request For Comments
  • RFE — Request For Enhancement
  • RFI — Radio Frequency Interference
  • RFID — Radio Frequency Identification
  • RGB — Red, Green, Blue
  • RGBA — Red, Green, Blue, Alpha
  • RHL — Red Hat Linux
  • RHEL — Red Hat Enterprise Linux
  • RIA — Rich Internet Application
  • RIAA — Recording Industry Association of America
  • RIP — Raster Image Processor
  • RIP — Routing Information Protocol
  • RISC — Reduced Instruction Set Computer
  • RLE — Run-Length Encoding
  • RLL — Run Length Limited
  • RMI — Remote Method Invocation
  • RMS — Richard Matthew Stallman
  • ROM — Read Only Memory
  • ROMB — Read-Out Motherboard
  • RPC — Remote Procedure Call
  • RPM — RPM Package Manager
  • RSA — Rivest Shamir Adleman
  • RSI — Repetitive Strain Injury
  • RSS — Rich Site Summary, RDF Site Summary, or Really Simple Syndication
  • RTC — Real-Time Clock
  • RTE — Real-Time Enterprise
  • RTFM — Read The Fucking Manual. (Can also be interpreted as the less offensive "Read the Friendly Manual".) Common answer to basic and often repeated questions, that could be avoided in the first place just by looking at the manual.
  • RTL — Right-to-Left
  • RTOS — Real Time Operating System
  • RTS — Ready To Send

[edit] S

  • SAN — Storage Area Network
  • SAR — Search And Replace[1]
  • SATA — Serial ATA
  • SAX — Simple API for XML
  • SBP-2 — Serial Bus Protocol 2
  • sbin — superuser binary
  • SCADA — Supervisory Control And Data Acquisition
  • SCID — Source Code in Database
  • SCM — Software Configuration Management
  • SCP — Secure Copy
  • SCPI — Standard Commands for Programmable Instrumentation
  • SCSI — Small Computer System Interface
  • SD — Secure Digital
  • SDDL — Security Descriptor Definition Language
  • SDI — Single Document Interface
  • SDIO — Secure Digital Input Output
  • SDK — Software Development Kit
  • SDL — Simple DirectMedia Layer
  • SDN — Service Delivery Network
  • SDR — Software-Defined Radio
  • SDRAM — Synchronous Dynamic Random Access Memory
  • SDSL — Symmetric DSL
  • SEAL — Semantics-directed Environment Adaptation Language
  • SEI — Software Engineering Institute
  • SFTP — Secure FTP
  • SFTP — Simple File Transfer Protocol
  • SFTP — SSH File Transfer Protocol
  • SGI — Silicon Graphics, Incorporated
  • SGML — Standard Generalized Markup Language
  • SHA — Secure Hash Algorithm
  • SIGGRAPH — Special Interest Group on Graphics,
  • SIMD — Single Instruction, Multiple Data
  • SIMM — Single Inline Memory Module
  • SIP — Session Initiation Protocol
  • SIP — Supplementary Ideographic Plane
  • SISD — Single Instruction, Single Data
  • SLI — Scalable Link Interface
  • SLIP — Serial Line Internet Protocol
  • SLM — Service Level Management
  • SLOC — Source Lines of Code
  • SPMD — Single Program, Multiple Data
  • SMA — SubMiniature version A
  • SMB — Server Message Block
  • SMBIOS — System Management BIOS
  • SMC — SMC Networks (company)
  • SMIL — Synchronized Multimedia Integration Language
  • S/MIME — Secure/Multipurpose Internet Mail Extensions
  • SMP — Supplementary Multilingual Plane
  • SMP — Symmetric Multi-Processing
  • SMS — Short Message Service
  • SMS — Systems Management Server
  • SMT — Simultaneous Multithreading
  • SMTP — Simple Mail Transfer Protocol
  • SNA — Systems Network Architecture
  • SNMP — Simple Network Management Protocol
  • SOA — Service-Oriented Architecture
  • SOAP — Simple Object Access Protocol
  • SoC — System-on-a-Chip
  • SO-DIMM — Small Outline DIMM
  • SOHO — Small Office/Home Office
  • SOI — Silicon On Insulator
  • SP — Service Pack
  • SPA — Single Page Application
  • SPF — Sender Policy Framework
  • SPI — Serial Peripheral Interface
  • SPI — Stateful Packet Inspection
  • SPARC — Scalable Processor Architecture
  • SQL — Structured Query Language
  • SRAM — Static Random Access Memory
  • SSD — Software Specification Document
  • SSH — Secure Shell
  • SSI — Server Side Includes
  • SSI — Single-System Image
  • SSI — Small-Scale Integration
  • SSID — Service Set Identifier
  • SSL — Secure Socket Layer
  • SSP — Supplementary Special-purpose Plane
  • su — superuser
  • SUS — Single UNIX Specification
  • SVG — Scalable Vector Graphics
  • SVGA — Super Video Graphics Array
  • SVD — Structured Vlsi Design Methodology
  • SWT — Stardard Widget Toolkit

[edit] T

  • B-TRAPP (Belinda Trapp) — A term meaning crappy computer, or Scott Sharps mom.
  • TAO — Track-at-Once
  • TB — Terabyte
  • Tcl — Tool Command Language
  • TCP — Transmission Control Protocol
  • TCP/IP — Transmission Control Protocol/Internet Protocol
  • TCU — Telecommunication Control Unit
  • TDMA — Time Division Multiple Access
  • temp — temporary (variable, file, directory, etc.)
  • TEOS — Trusted Email Open Standard
  • TFT — Thin Film Transistor
  • TI — Texas Instruments
  • Tk —
  • TLA — Three-Letter Acronym
  • TLD — Top-Level Domain
  • TLS — Thread-Local Storage
  • TLS — Transport Layer Security
  • tmp — temporary (variable, file, directory, etc.)
  • TNC — Terminal Node Controller
  • TNC — Threaded Neill-Concelman
  • TSO — Time Sharing Option
  • TSP — Traveling Salesman Problem
  • TSR — Terminate and Stay Resident
  • TTA — True Tap Audio
  • TTL — Transistor-Transistor Logic
  • TTL — Time To Live
  • TTS — Text-to-Speech
  • TTY — Teletype
  • TUCOWS — The Ultimate Collection of Winsock Software
  • TUG — TeX Users Group

[edit] U

  • UAAG — User Agent Accessibility Guidelines
  • UART — Universal Asynchronous Receiver Transmitter
  • UCS — Universal Character Set
  • UDDI — Universal Description, Discovery, and Integration
  • UDMA — Ultra DMA
  • UDP — User Datagram Protocol
  • UE — User Experience
  • UEFI — Unified Extensible Firmware Interface
  • UHF — Ultra High Frequency
  • UI — User Interface
  • UL — Upload
  • ULA — Uncommitted Logic Array
  • UMA — Upper Memory Area
  • UMB — Upper Memory Block
  • UML — Unified Modeling Language
  • UML — User-Mode Linux
  • UMPC — Ultra-Mobile Personal Computer
  • UNC — Universal Naming Convention
  • UPS — Uninterruptible Power Supply
  • URI — Uniform Resource Identifier
  • URL — Uniform Resource Locator
  • URN — Uniform Resource Name
  • USB — Universal Serial Bus
  • usr — user
  • USR — U.S. Robotics
  • UTC — Coordinated Universal Time
  • UTF — Unicode Transformation Format
  • UUCP — Unix to Unix Copy
  • UUID — Universally Unique Identifier
  • UVC — Universal Virtual Computer

[edit] V

  • var — variable
  • VAX — Virtual Address eXtension
  • VCPI — Virtual Control Program Interface
  • VR — Virtual Reality
  • VRML — Virtual Reality Modeling Language
  • VB — Visual Basic
  • VBA — Visual Basic for Applications
  • VBS — Visual Basic Script
  • VESA — Video Electronics Standards Association
  • VFAT — Virtual FAT
  • VFS — Virtual File System
  • VG — Volume Group
  • VGA — Video Graphics Array
  • VHF — Very High Frequency
  • VLAN — Virtual Local Area Network
  • VLB — Vesa Local Bus
  • VLF — Very Low Frequency
  • VLSI — Very-Large-Scale Integration
  • VM — Virtual Machine
  • VM — Virtual Memory
  • VOD — Video On Demand
  • VoIP — Voice over IP
  • VPN — Virtual Private Network
  • VPU — Visual Processing Unit
  • VSAM — Virtual Storage Access Method
  • VSAT — Very Small Aperture Terminal
  • VT — Video Terminal?
  • VTAM — Virtual Telecommunications Access Method

[edit] W

  • W3C — World Wide Web Consortium
  • WAFS — Wide Area File Services
  • WAI — Web Accessibility Initiative
  • WAIS — Wide Area Information Server
  • WAN — Wide Area Network
  • WAP — Wireless Access Point
  • WAP — Wireless Application Protocol
  • WAV — WAVEform audio format
  • WBEM — Web-Based Enterprise Management
  • WCAG — Web Content Accessibility Guidelines
  • WCF — Windows Communication Foundation
  • WDM — Wavelength Division Multiplexing
  • WebDAV — WWW Distributed Authoring and Versioning
  • WEP — Wired Equivalent Privacy
  • Wi-Fi — Wireless Fidelity
  • WiMAX — Worldwide Interoperability for Microwave Access
  • WinFS — Windows Future Storage
  • WINS- Windows Internet Naming Service
  • WLAN — Wireless Local Area Network
  • WMA — Windows Media Audio
  • WOL — Wake-on-LAN
  • WOM — Wake-on-Modem
  • WOR — Wake-on-Ring
  • WPA — Wi-Fi Protected Access
  • WPAN — Wireless Personal Area Network
  • WPF — Windows Presentation Foundation
  • WSDL — Web Services Description Language
  • WSFL — Web Services Flow Language
  • WUSB — Wireless Universal Serial Bus
  • WWAN — Wireless Wide Area Network
  • WWID — World Wide Identifier
  • WWN — World Wide Name
  • WWW — World Wide Web
  • WYSIWYG — What You See Is What You Get
  • WZC — Wireless Zero Configuration

[edit] X

  • XAG — XML Accessibility Guidelines
  • XAML — eXtensible Application Markup Language
  • XDM — X Window Display Manager
  • XDMCP — X Display Manager Control Protocol
  • XCBL — XML Common Business Library
  • XHTML — eXtensible Hypertext Markup Language
  • XML — eXtensible Markup Language
  • XMMS — X Multimedia System
  • XMPP — eXtensible Messaging and Presence Protocol
  • XMS — Extended Memory Specification
  • XNS — Xerox Network Services
  • XP — Cross-Platform
  • XP — Extreme Programming
  • XPCOM — Cross Platform Component Object Model
  • XPI — Cross Platform Installer
  • XPIDL — Cross Platform IDL
  • XSD — XML Schema Definition
  • XSL — eXtensible Stylesheet Language
  • XSL-FO — eXtensible Stylesheet Language Formatting Objects
  • XSLT — XSL Transformations
  • XSS — Cross Site Scripting
  • XTF — Extensible Tag Framework
  • XUL — XML-based User-interface Language

[edit] Y

  • Y2K — Year Two Thousand
  • YACC — Yet Another Compiler Compiler
  • YAML — YAML Ain't Markup Language
  • YAST — Yet Another Setup Tool

[edit] Z

  • ZCAV — Zone Constant Angular Velocity
  • ZCS — Zero Code Suppression
  • ZIF — Zero Insertion Force
  • ZIFS — Zero Insertion Force Socket
  • ZISC — Zero Instruction Set Computer
  • ZOPE — Z Object Publishing Environment
  • ZMA — Zone Multicast Address
Contents

0–9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z


[edit] See also

[edit] External links

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