List of computing and IT abbreviations

From Academic Kids

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.

See also

External links

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

Top of pageSee alsoExternal links

0-9

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 - Apple Display Connector (DVI variant)
  • ADB - Apple Desktop Bus
  • ADCCP - Advanced Data Communications Control Protocol/Procedures
  • ADO - ActiveX Data Object
  • ADSL - Asymmetric Digital Subscriber Line (variant of DSL)
  • AE - Adaptive Equalizer
  • AES - Advanced Encryption Standard
  • AGP - Accelerated Graphics Port (sometimes used with a suffix indicating the port's bandwidth, like AGP4x)
  • AH - Active Hub
  • AI - Artificial Intelligence
  • AIM - AOL Instant Messenger
  • AIX - Advanced Interactive Executive
  • AJAX - Asynchronous JavaScript and XML
  • AL - Active Link
  • AL - Access List
  • ALSA - Advanced Linux Sound Architecture
  • ALU - Arithmetic and Logical Unit
  • AM - Active Matrix
  • AM - Access Method
  • AM - Active Monitor
  • AMD - Advanced Micro Devices
  • AMI - American Megatrends Inc. (BIOS manufacturer)
  • AMR - Audio Modem Riser
  • ANSI - American National Standards Institute
  • ANT - Another Neat Tool
  • AoE - ATA-over-Ethernet
  • AOL - America Online
  • AOP - Aspect-Oriented Programming
  • APCI - Application-Layer Protocol Control Information
  • API - Application Programming Interface
  • APIC - Advanced Programmable Interrupt Controller
  • 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
  • ASN.1 - Abstract Syntax Notation 1
  • ASP - Application Service Provider
  • ASP (MS ASP) - Active Server Pages
  • AST - Abstract Syntax Tree
  • AT - Advanced Technology
  • AT - Access Time
  • AT - Active Terminator
  • ATA - Advanced Technology Attachment
  • ATAPI - Advanced Technology Attachment Packet Interface
  • ATG - Advanced Technology Group
  • ATI - Array Technology Industry
  • AT&T - American Telephone & Telegraph
  • AVC - Advanced Video Coding
  • AVI - Audio Video Interleaved
  • AWT - Abstract Windowing Toolkit

B

  • B2B - Business-to-Business
  • Bash - Bourne-again shell
  • BASIC - Beginner's All-Purpose Symbolic Instruction Code (acronym was added later)
  • BBS - Bulletin Board System
  • BCD - Binary Coded Decimal
  • BER - Bit Error Rate
  • BFD - Binary File Descriptor
  • BFS - Breadth-First Search
  • BiDi - Bi-Directional
  • BINAC - Binary Automatic Computer
  • BIND - Berkeley Internet Name Daemon
  • BIOS - Basic Input Output System
  • BJT - Bipolar Junction Transistor
  • Blog - Web Log
  • BMP - Basic Multilingual Plane
  • BNC - Bayonet Neill-Concelman
  • BOFH - Bastard Operator From Hell
  • BOOTP - Bootstrap Protocol
  • bps - bits per second
  • BSA - Business Software Alliance
  • BSD - Berkeley Software Distribution (Unix variant)
  • BSOD - Blue Screen of Death (MS Windows specific)
  • BSS - Block Started by Symbol
  • BT - BitTorrent
  • BW - Bandwidth

C

  • CA - Certificate Authority
  • CAD - Computer-Aided Design
  • CAE - Computer-Aided Engineering
  • CAID - Computer Aided Industrial Design
  • CAM - Computer-Aided Manufacturing
  • CAQ - Computer Aided Quality
  • CASE - Computer-Aided Software Engineering
  • CD - Compact Disc
  • CDE - Common Desktop Environment
  • CDMA - Code Division Multiple Access
  • CD-R - CD-Recordable
  • CD-ROM - CD Read-Only Memory
  • CD-RW - CD-Rewritable
  • CERT - Computer Emergency Response Team
  • 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
  • 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
  • Common Name?
  • CNC - Computer Numerical Control
  • CNR - Communication and Networking Riser
  • COBOL - Common Business-Oriented Language
  • COM - Component Object Model
  • CORBA - Common Object Request Broker Architecture
  • CPAN - Comprehensive Perl Archive Network
  • 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
  • CTS - Clear To Send
  • CTSS - Compatible Time-Sharing System
  • CVS - Concurrent Versioning System

D

  • DARPA - Defense Advanced Research Projects Agency
  • DAO - Data Access Objects
  • DAO - Disk-At-Once
  • DAP - Directory Access Protocol
  • DAT - Digital Audio Tape
  • DB - Database
  • DBA - Database Administrator
  • DBCS - Double Byte Character Set
  • DBMS - Database Management System
  • DCC - Direct Client-to-Client
  • 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
  • DFD - Data Flow Diagram
  • DFS - Depth-First Search
  • DHCP - Dynamic Host Configuration Protocol
  • DHTML - Dynamic HTML
  • DIMM - Dual Inline Memory Module
  • DIP - Dual In-line Package
  • DIVX - Digital Video Express
  • DL - Download
  • DLL - Dynamic Link Library
  • DLP - Digital Light Processing
  • DMA - Direct Memory Access
  • DMCA - Digital Millennium Copyright Act
  • DML - Data Manipulation Language
  • DN - Distinguished Name
  • DND - Drag-and-Drop
  • DNS - Domain Name System
  • 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
  • DSLAM - Digital subscriber line access multiplexer
  • DSN - Database Source Name (ODBC)
  • DSN - Dataset Name? (OS/390)
  • DTD - Document Type Definition
  • DTP - Desktop Publishing
  • DTR - Data Terminal Ready?
  • DVD - Digital Video Disc / Digital Versatile Disc
  • DVR - Digital Video Recorder (see also PVR)

E

  • 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
  • EGA - Enhanced Graphics Array
  • eID - electronic ID
  • EIDE - Enhanced IDE
  • 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
  • ESR - Eric Steven Raymond
  • EULA - End User License Agreement

F

  • FAP - FORTRAN Assembly Program
  • FAT - File Allocation Table
  • FAQ - Frequently Asked Questions
  • FCB - File Control Block
  • FDD - Floppy Disk Drive
  • FDDI - Fiber Distributed Data Interface
  • FDMA - Frequency-Division Multiple Access
  • FEC - Forward Error Correction
  • 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
  • FOSS - Free/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
  • FTTP - Fiber To The Premises
  • FTP - File Transfer Protocol
  • FQDN - Fully Qualified Domain Name
  • FUD - Fear Uncertainty Doubt

G

  • G11N - Globalization
  • Gb - Gigabit
  • GB - Gigabyte
  • GCC - GNU Compiler Collection (formerly GNU C Compiler)
  • 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 Object Model Environment
  • GNU - GNU's Not Unix
  • GPG - GNU Privacy Guard
  • GPIB - General-Purpose Instrumentation Bus
  • GPL - General Public License
  • GRUB - Grand Unified Boot-Loader
  • GTK - GIMP Toolkit
  • GUI - Graphical User Interface
  • GUID - Globally Unique IDentifier

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
  • HIG - Human Interface Guidelines
  • HIRD - Hurd of Interfaces Representing Depth
  • HP - Hewlett-Packard
  • HPFS - High Performance File System
  • HT - Hyper Threading
  • HTML - Hypertext Markup Language
  • HTTP - Hypertext Transport Protocol
  • HTTPd - Hypertext Transport Protocol Daemon
  • HURD - Hird of Unix-Replacing Daemons
  • Hz - Hertz

I

  • 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
  • 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
  • IIOP - Internet Inter-Orb Protocol
  • IM - Instant Messaging
  • IMAP - Internet Message Access Protocol
  • IME - Input Method Editor
  • I/O - Input/Output
  • IP - Intellectual Property
  • IP - Internet Protocol
  • IPC - Inter-Process Communication
  • 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 Architechture
  • 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

J

  • JAXP - Java API for XML Processing
  • JCL - Job Control Language
  • JDBC - Java Database Connectivity
  • JDK - Java Development Kit
  • JDS - Java Desktop System
  • JFC - Java Foundation Classes
  • JFET - Junction Field-Effect Transistor
  • JFS - Journaling Filesystem
  • JINI - Jini Is Not Initials
  • JIT - Just-In-Time
  • 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
  • JVM - Java Virtual Machine
  • jwz - Jamie Zawinski

K

  • KB - Keyboard
  • Kb - Kilobit
  • KB - Kilobyte
  • KB - Knowledge Base
  • KDE - K Desktop Environment
  • kHz - KiloHertz
  • KISS - Keep It Simple, Stupid
  • KVM - Keyboard, Video, Mouse

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
  • LIF - Low Insertion Force
  • LIFO - Last In First Out
  • LILO - Linux Loader
  • LKML - Linux Kernel Mailing List
  • 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

M

  • 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
  • MCSE - Microsoft Certified System Engineer
  • MDA - Monochrome Display Adapter
  • ME - [Windows] Millennium Edition
  • MF - Medium Frequency
  • MFC - Microsoft Foundation Classes
  • MHz - Megahertz
  • MIPS - Million Instructions Per Second
  • MIPS - Microprocessor without Interlocked Pipeline Stages
  • MIS - Management Information Systems
  • MIT - Massachusetts Institute of Technology
  • MIME - Multipurpose Internet Mail Extensions
  • 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
  • MS - Microsoft
  • MSB - Most Significant Bit
  • MS-DOS - Microsoft DOS
  • MT - Machine Translation
  • MTU - Maximum Transmission Unit
  • MSDN - Microsoft Developer Network
  • MSI - Medium-Scale Integration
  • MUD - Multi-User Dungeon
  • MVC - Model-View-Controller
  • MVS - Multiple Virtual Storage

N

  • NACK - Negative ACKnowedgement
  • NAK - Negative AcKnowedgement Character
  • NAT - Network Address Translation
  • NCSA - National Center for Supercomputing Applications
  • NDS - Novell Directory Services
  • NEXT - Near-End CrossTalk
  • NFS - Network Filesystem
  • NI - National Instruments
  • NIC - Network Interface Card
  • NIST - National Institute of Standards and Technology
  • NLP - Natural Language Processing
  • NP - Non-Deterministic Polynomial-Time
  • NPL - Netscape Public License
  • NPU - Numeric 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
  • NT (Windows) - New Technology
  • NT - New Trails Technology
  • NTFS - NT Filesystem
  • NTLM - NT Lan Manager
  • NTP - Network Time Protocol
  • NURBS - Nonuniform rational B-spline
  • NVRAM - Non-Volatile Random Access Memory

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
  • OLTP - Online Transaction Processing
  • OMG - Object Management Group
  • OO - Object-Oriented
  • OO - Open Office
  • OOo - OpenOffice.org
  • OOP - Object-Oriented Programming
  • ORB - Object Request Broker
  • OS - Open Source
  • OS - Operating System
  • OSDN - Open Source Developer Network
  • OSI - Open Source Initiative
  • OSI - Open Systems Interconnect
  • OSPF - Open Shortest Path First
  • OSS - Open Sound System
  • OSS - Open Source Software
  • OSS - Operation Support Systems
  • OSTG - Open Source Technology Group (formerly OSDN)
  • OUI - Organizationally Unique Identifier

P

  • P2P - Peer-To-Peer
  • PAN - Personal Area Network
  • PARC - Palo Alto Research Center
  • PATA - Parallel ATA
  • PCB - Printed Circuit Board
  • PC - Personal Computer
  • PCI - Peripheral Component Interconnect
  • PCMCIA - Personal Computer Memory Card International Association
  • PCM - Pulse-Code Modulation
  • PD - Public Domain
  • PDA - Personal Digital Assistant
  • PDF - Portable Document Format
  • PDP - Programmed Data Processor
  • PE - Physical Extents
  • PERL - Practical Extraction and Reporting Language
  • PGA - Pin Grid Array
  • PGA - Programmable Gate Arrays
  • PGP - Pretty Good Privacy
  • PHP - PHP: Hypertext Preprocessor
  • PIC - Peripheral Interface Controller
  • PID - Proportional-Integral-Derivative
  • PID - Process ID
  • PINE - Program for Internet News & Email (unofficially PINE Is Not Elm)
  • PIO - Programmed Input/Output
  • PKCS - Public Key Cryptography Standards
  • PKI - Public Key Infrastructure
  • PLC - Programmable Logic Controller
  • PLD - Programmable Logic Device
  • PL/I - Programming Language One
  • PL/M - Programming Language Microcomputer
  • PMM - POST Memory Manager
  • PNG - Portable Network Graphics
  • PnP - Plug-and-Play
  • 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
  • PPPoE - PPP over Ethernet
  • PS - PostScript
  • PS/2 - Personal System/2
  • PSVI - Post-Schema-Validation Infoset
  • PV - Physical Volume
  • PVG - Physical Volume Group
  • PVR - Personal Video Recorder
  • PXE - Pre Execution Environment
  • PXI

Q

  • QA - Quality Assurance
  • QoS - Quality of Service
  • QOTD - Quote of the Day
  • Qt - Quasar Toolkit

R

  • RACF - Resource Access Control Facility
  • RAD - Rapid Application Development
  • RADIUS - Remote Authentication Dial In User Service
  • RAID - Redundant Array of Inexpensive Disks
  • 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
  • RF - Radio Frequency
  • RFC - Request For Comments
  • RFE - Request For Enhancement
  • RFI - Radio Frequency Interference
  • RFID - Radio Frequency Identification
  • RGB - Red, Green, Blue
  • RH - Red Hat (Linux)
  • RHEL - Red Hat Enterprise Linux
  • RIAA - Recording Industry Association of America
  • RIP - Raster Image Processor
  • RIP - Routing Information Protocol
  • RISC - Reduced Instruction Set Computer
  • RLE - Run-Length Encoding
  • RMI - Remote Method Invocation
  • RMS - Richard Matthew Stallman
  • ROM - Read Only Memory
  • RPC - Remote Procedure Call
  • RPM - RedHat Package Manager
  • RSA - Rivest Shamir Adleman
  • RSS - Rich Site Summary, RDF Site Summary, or Really Simple Syndication
  • RTL - Right-to-Left
  • RTOS - Real Time Operating System
  • RTS - Ready To Send

S

  • SAN - Storage Area Network
  • SATA - Serial ATA
  • SAX - Simple API for XML
  • SCADA - Supervisory Control And Data Aquisition
  • SCP - Secure Copy
  • SCSI - Small Computer System Interface
  • SD - Secure Digital
  • 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
  • SLI - Scalable Link Interface
  • SLIP - Serial Line Internet Protocol
  • SLM - Service Level Management
  • 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
  • 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
  • SOI - Silicon On Insulator
  • SP - Service Pack
  • 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
  • SSL - Secure Socket Layer
  • SSP - Supplementary Special-purpose Plane
  • SUS - Single UNIX Specification
  • SVG - Scalable Vector Graphics
  • SVGA - Super Video Graphics Array
  • SWT - Stardard Widget Toolkit

T

  • TAO - Track-At-Once
  • TB - Terabyte
  • Tcl - Tool Command Language
  • TCP - Transmission Control Protocol
  • TCP/IP - Transmission Control Protocol/Internet Protocol
  • TDMA - Time Division Multiple Access
  • TFT - Thin Film Transistor
  • TI - Texas Instruments
  • Tk -
  • TLA - Three-Letter Acronym
  • TLD - Top-Level Domain
  • TLS - Transport Layer Security
  • TSO - Time Sharing Option
  • TSP - Traveling Salesman Problem
  • TTL - Transistor-Transistor Logic
  • TTA - True Tap Audio
  • TTL - Time To Live
  • TTY - Teletype
  • TUCOWS - The Ultimate Collection of Winsock Software

U

  • UART - Universal Asynchronous Receiver Transmitter
  • UCS - Universal Character Set
  • UDDI - Universal Description, Discovery, and Integration
  • UDMA - Ultra DMA
  • UDP - User Datagram Protocol
  • UHF - Ultra High Frequency
  • UI - User Interface
  • UL - Upload
  • UML - Unified Modeling Language
  • UML - User Mode Linux
  • UNC - Universal Naming Convention
  • UPS - Uninterruptible Power Supply
  • URI - Uniform Resource Identifier
  • URL - Uniform Resource Locator
  • URN - Uniform Resource Name
  • USB - Universal Serial Bus
  • UTC - Coordinated Universal Time
  • UTF - Unicode Transformation Format
  • UUCP - Unix to Unix Copy Protocol
  • UVC - Universal Virtual Computer

V

  • VAX - Virtual Address eXtension
  • 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
  • VLB - Vesa Local Bus
  • VLF - Very Low Frequency
  • VLSI - Very-Large-Scale Integration
  • VM - Virutal Memory
  • VM - Virtual Machine
  • VOD - Video On Demand
  • VoIP - Voice over IP
  • VPN - Virtual Private Network
  • VSAM - Virtual Storage Access Method
  • VSAT - Very Small Aperture (Satellite) Terminal
  • VT - Video Terminal?
  • VTAM - Virtual Telecommunications Access Method

W

  • W3C - World Wide Web Consortium
  • WAFS - Wide Area File Services
  • 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
  • WDM - Wavelength Division Multiplexing
  • WebDAV - WWW Distributed Authoring and Versioning
  • WEP - Wired Equivalent Privacy
  • Wi-Fi - Wireless Fidelity
  • WiMAX - Worldwide Interoperability for Microwave Access
  • WINS- Windows Internet Naming Service
  • WMA - Windows Media Audio
  • WOL - Wake on LAN
  • WPA - Wi-Fi Protected Access
  • WSDL - Web Services Description Language
  • WWW - World Wide Web
  • WYSIWYG - What You See Is What You Get

X

  • 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 (not Windows XP)
  • XP - Extreme Programming
  • XPCOM - Cross Platform Component Object Model
  • XPI - Cross Platform Installer
  • XPIDL - Cross Platform IDL
  • XSD - XML Schema Definition
  • XSL-T - eXtensible Stylesheet Language Transformations
  • XSS - Cross Site Scripting
  • XT -
  • XUL - XML-based User-interface Language

Y

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

Z

  • ZCS - Zero Code Suppression
  • ZI - Zero Insertion
  • ZIF - Zero Insertion Force
  • ZIFS - Zero Insertion Force Socket
  • 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

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