- OMR - Optical Mark Reader
- ONE - Open Network Architecture
- OOA - Object Orient Analysis
- OOAD - Object Oriented Analysis And Design
- OOP - Object Oriented Programming
- OCR - Optical Character Readers
- ODBC - Open Data Base Connectivity
- OLE - Object Linking And Embedding
- OOPS - Object Oriented Programming System
- OPEN GL - Open Graphics Library
- OS - Operating System
- OSI - Open System Interconnection
- PC - Personal Computer
- PCI - Peripheral Component Interconnect
- PCMCIA - Personal Computer Memory Card International Association
- PDA - Personal Digital Assistant
- PDF - Portable Document Format
- PLC - Programmable Logic Controller
- PNG - Portable Network Graphics
- PNP - Plug And Play
- PPP - Peer To Peer Protocol
- PPTP - Point To Point Tunneling Protocol
- PDL - Page Description Language
- PDU - Protocol Data Unit
- PIC - Programming Interrupt Control
- PILOT - Programmed Inquiry Learning Or Teaching
- PLA - Programmable Logic Array
- PROM - Programmable Read Only Memory
- PS - Post Script
- RADSL - Rate Adaptive Digital Subscribes Line
- RAID - Redundant Array Of Independent Disks
- RAM - Random Access Memory
- RAMDAC - Random Access Memory Digital To Analog Converter
- RAS - Remote Access Network
- RD RAM - Rambus Dynamic Random Access Memory
- RDBMS - Relational Data Base Management System
- RICS - Reduced Instruction Set Computer
- RIP - Raster Image Processor
- RISC - Reduced Instruction Set Computer
- ROM - Read Only Memory
- RDO - Remote Data Objects
- RDP - Remote Desktop Protocol
- RFC - Request For Comments
- RGB - Red Green Blue
- RPC - Remote Procedure Call
- RTC - Real Time Clock
- RTF - Rich Text Format
- RTOS - Real Time Operating System
- SACK - Selective Acknowledgements
- SAM - Security Access Manager
- SAP - Service Access Point, Systems ApplicationsProducts
- SCMP - Software Configuration Management Plan
- SD RAM - Synchronous Dynamic Random AccessMemory
- SDD - Software Design Description
- SDK - Software Development Kit
- SDL - Storage Definition Language
- SDN - Integrated Service Digital Network
- SDSL - Symmetric Digital Subscribes Line
- SG RAM - Synchronous Graphics Random AccessMemory
- SGML - Standard Generalized Markup Language
- SIM - Subscriber Identification Module
- SIMD - Single Instruction Multiple Data
- SISD - Single Instruction Single Data
- SIU - Serial Interface Unit
- SMP - Symmetric MultiProcess
- SMS - Short Message Service
- SMTP - Simple Mail Transfer Protocol
- SNA - System Network Architecture
- SNAP - Sub Network Access Protoco
- lSNMP - Simple Network Management Protocol
- SNOBOL - String Oriented Symbolic Language
- SOAP - Simple Object Access Protocol
- SPX - Sequenced Packet Exchange
- SQA - Statistical Quality Assurance
- SQL - Structured Query Language
- SRAM - Static Random Access Memory
- SRS - Software Requirements Specification
- STP - Shielded Twisted Pair
- SVVP - Software Verification And Validation Plan
- SW - Software
- TDI - Transport Data Interface
- TDMA - Time Division Multiple Access
- TPM - Transactions Processing Monitor
- TSR - Terminate And Stay Residents
- TAPI - Telephony Application Program Interface
- TB - Tera Bytes
- TCP - Transmission Control Protocol
- TCPIP - Transmission Control Protocol InternetProtocol
- UNIX - Uniplexed Information And ComputerSystems
- URL - Universal Resource Locator
- USB - Universal Serial Bus
- UDD - User Datagram Protocol
- UDP - User Datagram Protocol
- UI - User Interface
- UML - Unified Modelling Language
- UNC - Universal Naming Convention
- USRT - Universal Synchronous ReceiverTransmitted
- UTP -Unshielded Twisted Pair
- VLIW - Very Long Instruction Words
- VLSI - Very Large Scale Integrated Circuits
- VPN - Virtual Private Network
- VRAM - Video Random Access Memory
- VAN - Virtual Area Network
- VAST - Very Small Aperture Terminal
- VB - Visual Basic
- VC++ - Visual C++
- VCD - Video Compact Disc
- VDL - View Definition Language
- VGA - Video Graphics Array
- VHS - Video Home System
- VRML - Virtual Reality Modelling Language
- VS - Visual Studio
- VVR - Software Validation And Validation Report
- VXD - Virtual Device Driver
- WAIS - Wide Area Information Servers
- WAN - Wide Area Network
- WAP - Wireless Application Protocol
- WBEM - WebBase Enterprise Management
- WDM - Wave Division Multiplexing
- W3C - World Wide Web Consortium
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