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Updated:09/19/2008 Copyright © 1996-2008 Skip Stein
O...
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TOP | UP to N | DN to P | BOTTOM |OAB One-to-All Broadcast
OAD Open Architecture Driver [Bernoulli]
OAG Official Airline Guide + Online Air Guide
OAI Open Applications Interface
OAS One-to-All Scatter
OBD On Board Diagnostics
OBEX Object Exchange [Borland]
OBJ Object
OC Optical Carrier
OCE Open Collaborative Environment [Apple]
OCF Objects Components Framework [Borland]
OCL Object Constaint Language + Operation Control Language +
Operator Control Language
OCR Optical Character Recognition
OCS On-Card Sequencer
OCSP Online Certificate Status Protocol
OCX OLE Custom Control
ODA Open Document Architecture
ODAPI Open Database Application Programming
Interface [Borland]
ODBC Object-Oriented Database Connectivity +
Open Database Computing +
Open Data Base Connectivity [Microsoft]
ODBMS Object-Oriented Database Management System (also
see OODMS)
ODI Open Datalink Interface [Novell] +
Open Device Interconnect [NetWare]
ODIF Open Document Interchange Format
ODL Object Definition Language
ODM Object Data Manager [IBM] +
Optimized Distribution Model [Compaq]
ODMA Open Document Management API
ODP Open Distributed Processing
ODS Open Data Services [Microsoft] +
Operational Data Store
ODSI Open Directory Service Interface [Microsoft]
ODT Open Desktop
OEM Original Equipment Manufacturer
OEP Operand Execution Pipeline
OF Overflow Flag
OFB Output Feedback (mode)
OFDM Orthogonal Frequency Division Multiplexing
OFMT Output Format for Numbers
OFS Object File System [Microsoft] + Output Field Separator
OFX Open Financial Exchange
OGSA Open Grid Services Architecture
OGSI Open Grid Services Infrastructure
OH Off Hook
OHCI Open Host Controller Interface
OID Object Identifier
OIDL Object Interface Definition Language
OIS Office Information System
OLAP Online Analytical Processing
OLCP Online Complex Processing
.OLD Old version (file name extension)
OLE Object Linking and Embedding [Microsoft]
OLED Organic Light Emitting Diode
OLGA Online Guitar Archive
OLI Optical Line Interface [AT&T]
OLMC Output Logic Macrocell
OLSP Online Service Provider
OLTP Online Transaction Processing
OM Object Manager
OMA Object Management Architecture [Microsoft]
OME Open Messaging Environment (protocol)
OMF Object Module Format [Microsoft] +
Open Media Framework + Open Message Format
OMG Object Management Group
OMI Open Messaging Interface [Lotus]
OML Object Manipulation Language
OMR Optical Mark Recognition
ONC Open Network Computing [Sun]
ONDS Open Network Distribution Services [IBM]
ONE Open Network Environment [Netscape]
ONMS Open Network Management System
ONU Optical Network Unit
OOAD Object-Oriented Analysis and Design
OOB Out Of Band
OODB Object-Oriented Database
OODMS Object-Oriented Database Management System (also
see ODBMS)
OOL Object-Oriented Language
OOOS Object-Oriented Operating System
OOPL Object-Oriented Programming Language
OOPS Object Oriented Programming and Systems
OOS Object-Oriented Systems +
Off-line Operating Simulator
OOT Object-Oriented Technology
OOUI Object Oriented User Interface
OP Operation + Optical + Output
OPAC Online Public Access Catalog [Internet]
OPC Open Process Control + Organic/Optical Photoconductor
OPCODE Operational Code
OPD Operand
OPI Open Prepress Interface
OPM Operations Per Minute
OPS Open Profiling Standard + Oracle Parallel Server [Oracle]
OPT Open Protocol Technology
.OPT Options (file name extension)
OPUS Octal Program Updating System
OQL Object Query Language
ORACLE On-Line Inquiry and Report Generator (UNIX DB program)
ORB Object Request Broker [Microsoft]
ORDVAC * Ordnance Variable Automatic Computer
.ORG Non-Profit Organizations (Domain name) [Internet]
ORI Online Retrieval Interface
.ORI Original (file name extension)
ORL Optical Return Loss
OROM Optical Read-Only Memory
ORS Output Record Separator
OS Operating System
OS/2 Operating System/2 [IBM]
OSA Open Scripting/System Architecture
OSCAR Open Source Cluster Application Resources
OSD On Screen Display +
Open Software Description/Distribution
OSE Office Server Extensions [Microsoft]
OS/E Operating System/Environment
OSF Open Software Foundation
OSI Open Systems Interconnection
OSM Off-Screen Model
OSP On-Screen Programming + Optical Storage Processor
OSPF Open Shortest Path First
OSQL Object Structured Query Language
OSR2 OEM Service Release 2 [Microsoft]
OSS Open Source Software
OT Object Technology
OTA Operation-Triggered Architecture + Over The Air
OTDR Optical Time Domain Reflectometer
OTF Open Token Foundation
OTI Object Technology International [IBM]
OTP One-Time Programmable
OUI Organizational Unique Identifier
OURS Open Users Recommended Solutions
.OUT Outlines (file name extension)
OUTS Output String
OV Overflow
OVAL Object-Based Virtual Application Language [Psion] +
Open Vulnerability Assessment Language [US-CERT]
.OVL Program Overlay (file name extension)
.OVR Program Overlay (file name extension)
OWL Object/Open Windows Library [Borland]
P...
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TOP | UP to O | DN to Q | BOTTOM |P3P Platform for Privacy Preferences Project
PAB Personal Address Book
PABX Private Automatic Branch Exchange
PACE Priority Access Control Enabled [3Com]
PACS Picture Archiving and Communication System
PACS-L Public Access Computer Systems List [Internet]
PAD Packet Assembler/Disassembler +
Portable Application Description
PADS Pen Application Development System [Slate Corporation]
PAIH Public-Access Internet Host [Internet]
PAIS Public-Access Internet Site [Internet]
.PAK Packed (compressed file name extension) [NoGate
Consulting]
PAL Paradox Applications Language [Borland] +
Phase Alternating Line + Programmed Array Logic +
Programming Assembly Language
.PAL Palette (file name extension)
PALC Plasma-Addressed Liquid Crystal (display)
PALS Principles of the Alphabet Literacy System
PAM Pluggable Authentication Module (library) +
Pulse Amplitude Modulation
PAN Personal Area Network [GTE]
PAP Packet-level Procedure +
Password Authentication Protocol + Picture And Picture +
Push Access Protocol + Printer Access Protocol
PAR Personal Animation Recorder + Parallel
PARA Paragraph
PARC Palo Alto Research Center [XEROX]
PA-RISC Precision Architecture-RISC [HP]
.PAS PASCAL source code (file name extension)
PASCAL (Programming Language named for Blaise Pascal)
PAT Port Address Translation
.PAT Patch + Pattern (file name extensions)
PATA Parallel Advanced Technology Attachment
PATN Promotional Port Access Telephone Number
PAUSE Perl Automatic Upload Server
PAX Portable Archive Exchange [Unix]
PB Petabyte (1,024 terabytes)
(One Million Billion characters of information)
PBA Printed Board Assembly
PBC Plain-Text Block Chaining
PBE Prompt By Example
PBGA Plastic Ball Grid Array
PBR Policy-Based Routing [Cisco]
PBX Private Branch Exchange
PC Personal Computer + Printed Circuit + Program Counter
PCACIAS Personal Computer Automated Calibration Interval
Analysis System
PCB Printed Circuit Board + Program Control Block
PCBC Plain/Propagating Cipher Block Chaining
PCC Proof Carrying Code
PCD Photo Compact Disk
PC-DOS Personal Computer - Disk Operating System [IBM]
PCEB PCI to EISA Bridge [Intel]
PCI Peripheral Component Interconnect/Interface
PCIC PC-Card Interrupt Controller
PC-I/O Program Controlled I/O
PCL Printer Command Language [HP] + Process Control Language
PCM Personal Computer Manufacturer +
Printer Cartridge Metric [HP] +
Pulse Code Modulation
PCMA Paired Carrier Multiple Access
PCMC PCI, Cache, Memory Controller [Intel]
PCMCIA Personal Computer Memory Card International Association
PCMIM Personal Computer Media Interface Module
PCN Personal Computer Network
PCNFS Personal Computer Network File System
PCO Point of Control and Observation
PCS Patchable Control Store +
Personal Communication Services/System +
Personal Conferencing Specification +
Planning Control Sheet + Print Contrast Signal +
Process Control Systems + Program Counter Store +
Project Control System
PCT Private Communications Technology +
Program Control Table
.PCT Picture (file name extension)
.PCX Picture Image (file name extension)
PD Phase-Change Dual + Public Domain
PDA Personal Digital Assistant
.PDB Palm Database (file name extension) +
Program Database (file name extension)
PDC Primary Domain Controller
PDD Physical Device Driver + Portable Digital Document
PDF Package Definition File + Portable Document Format +
Portable Document File + Processor Defined Function +
Program Development Facility
.PDF Printer Description (file name extension)[Borland,Lotus]
PDH Plesiosynchronous Digital Hierarchy
PDIAL Public Dialup Internet Access List [Internet]
PDL Page Description Language + Program Description Language
+ Program Design Language
PDM Product Data Management
PDN Public Data Network
PDO Portable Distributed Objects [Next]
PDP Parallel Data Processing + Plasma Display Panel +
Programmable Data Processor +
(DEC Computer System Designation, i.e. PDP-8, PDP-11)
PDS Packet Driver Specification + Partitioned Data Set +
Planetary Data System + Portable Document Software +
Processor Direct Slot [Macintosh]
PDSN Packet Data Serving Node
PDSS Post Development and Software Support
PDT Performance Diagnostic Tool [IBM] +
Programmable Drive Table
PDU Plug Distribution Unit + Protocol Data Unit
.PDX Paradox files (file name extension) [Borland] +
Printer Description Extension (file name extension)
PE Parity Even + Processing Element + Protect Enable
PEA Pocket Ethernet Adapter
PEB Personal Electronic Ballot
P4EE Pentium 4 Extreme Edition [Intel]
PEL Picture Element [IBM]
PEM Privacy-Enhanced Mail [Internet]
PEN SDK Pen Computing Software Development Kit
PEP Packet Exchange Protocol +
Packetized Ensemble Protocol [Telebit]
PERC Power Edge RAID Controller
PERL Practical Extraction and Report Language [Unix]
PERT Program Evaluation and Review Technique
PES Positioning Error Signal + Processor Enhancement Socket
Processor Upgrade Socket
PET Print Enhancement Technology [Compaq]
.PFB Printer Font Binary (file name extension)
PFE Programmer's File Editor
.PFM Printer Font Metrics (file name extension) [Windows]
PFN Page Frame Number
PFR Portable Font Resource + Power-Fail Restart
PGA Pin Grid Array + Professional Graphics Adapter [IBM]
PGC Program Group Control [Microsoft]
PGDN Page Down
.PGL Graphics (file name extension) [Hewlett-Packard]
PGM Program
PGML Precision Graphics Markup Language
PGP Pretty Good Privacy (name of encryption program)
.PGP ProGram Parameter (file name extension) [AutoCAD]
PGUP Page Up
PHF Perfect Hash Function
PHIGS Programmers' Hierarchical Interactive Graphics
Standards
.PHO Phone List (file name extension)
PHP Personal Home Pages (original name of this programming
language, now known as PHP Hypertext Preprocessor)
PHS Personal Handyphone System
PI Program Interruption
PIA Peripheral Interface Adapter
PIC Personal Information Carrier +
Personal Intelligent Communicator +
Personal Internet Communicator +
Platform for Internet Content +
Priority Interrupt Controller +
Program Interrupt Controller
PICS Platform for Internet Content Selection [W3C]
PICT Picture
PID Packet Identifier + Physical Interface Device +
Process Identification Number + Product ID +
Proportional, Integral, Derivative
PIER Procedures for Internet/Enterprise Renumbering
PIF Picture Interchange Format File +
Program Information File
PII Program Integrated Information
PILOT Programmed Inquiry Learning Or Teaching
PilotACE* Pilot Automatic Computing Engine
PIM Personal Information Manager +
Primary Interface Module +
Protocol-Independent Multicast
PIN Personal Identification Number +
Process Identification Number [Unix]
PINE Pine Is Not Elm (original usage) +
Program for Internet News & Email (present usage)
PING Packet Internet Groper
PIO Parallel Input/Output + Processor Input/Output +
Programmed Input/Output
PIP Pattern and Information Processing +
Picture-In-Picture + Problem Isolation Procedure +
Programmable Interconnect Point
PIPO Parallel In, Parallel Out
PIR Protocol Independent Routing
PIT Programmable Interval Timer
PIXEL Picture Element
PJPEG Progressive JPEG
PK Pack + Primary Key
PKC Public Key Cryptography
PKE Public Key Enabled
PKI Public Key Infrastructure
PL Plus
.PL Perl Language (file name extension)
PLA Programmable Logic-Array
PLATO Programmed Logic for Automatic Teaching Operations
PLC Power Line Communications +
Programmable Logic Controller
PLCC Plastic Leadless Chip Carrier
PLD Programmable Logic Device
PLDS Pilot Land Data System [NASA]
PLL Phase Locked Loop
.PLL Prelinked Library (file name extension) [Clipper]
PL/M Programming Language for Micros
PLMN Public Land Mobile Network
PLS Primary Link Station
PLSQL Procedural Language-Extensions to SQL (Oracle)
PLU Primary Logical Unit
PLV Production Level Video
PL/1 * Programming Language One
PM Presentation Manager [IBM] +
Preventative Maintenance + Process Manager
.PM6 PagerMaker6 (file name extension) [Corel]
P-MAIL Paper Mail
PMD Packet Mode Data
PMMU Paged Memory Management Unit
PMOS Positive Channel Metal Oxide Semiconductor
PMP Personal Media Player
PMR Problem Management Report [IBM]
PMU Performance Monitoring Unit
PMS Policy Management System
PN Processing Node
P/N: Part Number
PNA Programmable Network Access
PNG Portable Network Graphics
PNNI Private Network-to-Network Interface
PNP Plug And Play +
Positive Negative Positive (bipolar transistor)
PO Parity Odd
POA Portable Object Adapter
POC Point Of Contact
POC-IT Point Of Care-Information Technology [Johns Hopkins]
POD Piece Of Data + Plain Old Documentation [Perl] +
Plain Old Dos + Publishing On Demand
POE Power Open Environment
POH Power-On Hours
POL Problem Oriented Language
POP Picture-Outside-Picture + Point Of Presence +
Pop from Stack + Post Office Protocol
POP3 Post Office Protocol, Version 3
POPA Pop All Registers
POPF Pop Flags
POR Power-On-Reset
POS Packet Over Sonet + Point of Sale + Positive +
Programmable Object Select
POSE Palm Operating System Emulator
POSIX Portable Operating System Interface for Unix
POST Power-On Self Test
POSTNET Postal Numeric Encoding Technique (bar code)
POTS Plain Old Telephone Service + Plain Old Time-Sharing
POWER Performance Optimization with Enhanced RISC [IBM]
PowerPC Performance Optimization with Enhanced RISC-Performance
Computing
PP Parallel Port
P2P Peer To Peer + People To People
P3P Platform for Privacy Preferences
PPA Pixel Processing Accelerator
.PPD PostScript Printer Description (file name extension)
PPDS Personal Printer Data Stream [IBM]
PPGA Plastic Pin Grid Array
PPI Precise Pixel Interpolation
PPM Pages Per Minute
PPML Personalized Print Markup Language
PPP Point-to-Point Protocol [Internet]
PPPOE Point-to-Point Protocol Over Ethernet
PPS Packets Per Second + Power Personal Systems [IBM]
.PPS PowerPoint Show (file name extension) [Microsoft]
PPTP Point-to-Point Tunneling Protocol [Microsoft]
PQA Palm Query Application
PQFP Plastic Quad Flat Pack
PQO Parallel Query Option
PRACSA Public Remote Access Computer Standards Association
PRAM Parallel Random-Access Machine +
Parameter Random Access Memory
.PRC Pilot Resource (file name extension) [Palm Pilot]
.PRD Printer Driver (file name extension) [Microsoft]
PRE Preformatted [HTML]
PREP Power PC Reference Platform [IBM/Motorola]
PRF Pulse Repetition Frequency
.PRF Preferences (file name extension) [Grammatik IV]
.PRG Program (file name extension)
PRI Primary-Rate Interface
PRINTF Print with Formatting [C Programming Language]
PRISM Photo-Refractive Information Storage Material
.PRJ Project (file name extension) [Borland]
PRMD Private Management Domain [X.400]
PRML Partial-Response Maximum-Likelihood
.PRO Professionals (Domain Name) [Internet] +
Profile (file name extension)
PROC Procedure
PROFS Professional Office System [IBM]
PROG Program + Programmer
PROLOG Programming In Logic (Programming Language)(See HLL)
PROM Programmable Read Only Memory
PRN Printer
PRNG Pseudo-Random Number Generation (algorithm)
.PRS Printer (file name extension) [WordPerfect]
PRTSC Print Screen
PS Proportional Spacing
.PS PostScript (file name extension)
PS/2 Programming System 2 [IBM]
PSAPI Presentation Space Application Programming Interface
PSC Personal Super Computer + Print Server Command +
Product Service Center
PSDN Packet-Switched Data Network
PSDS Packet-Switched Data Service
PSERVER Print Server [NetWare]
PSF Permanent Swap File
PSID PostScript Image Data
PSINET (formerly Performance Systems International)
PSK Phase Shift Keying
PSM Platform Specific Model + Printing Systems Manager +
Print Services Facility [IBM]
PSN Packet Switching Network +
Processor Serial Number
PSP Personal Software Products (group) [IBM] +
Program Segment Prefix
PSPDN Packet-Switched Public Data Network
PSRAM Pseudo-Static Random Access Memory
PSRT PostScript Round Table [GEnie]
PSS Process Status Structure
PSTN Public Switched Telephone Network
PSU Power Supply Unit
PSW Program Status Word
.ps.Z Compressed PostScript (file name extension) [Unix]
PT Page Table
P/T Part Time
PTD Parallel Transfer Disk Drive
PTE Page Table Entry
PTF Problem Temporary/Trouble Fix [IBM]
PTH Plated Through Hole
PTI Packet Type Identifier
PTT Postal Telephone & Telegraph
PUB Public (directory) [Internet] + Publish
.PUB Publication (file name extension) [Ventura]
PUN Physical Unit Number
PUP PARC Universal Packet (protocol)
PURL Persistent URL
PUS Processor Upgrade Socket
PUSHA Push All Registers
PUSHF Push Flags
PVC Permanent Virtual Circuit + Polyvinyl Chloride
PVM Parallel Virtual Machine +
Pass-through Virtual Machine (protocol) [IBM]
PVP Parallel Vector Processing
PVR Personal Video Recorder
PVS Parallel Visualization Server
PVT Position, Velocity, Time
PW Password
PWB Printed Wire Board +
Programmer's Workbench [Microsoft]
PWD Print Working Directory [Unix]
.PWL Password List (file name extension)
PWM Pulse Width Modulation
PWR Power
PWSCS Programmable Workstation Communication Services [IBM]
.PX Primary Index (file name extension) [Paradox]
Q...
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TOP | UP to P | DN to R | BOTTOM |QA Quality Assurance
QAM Quadrature Amplitude Modulation
QBE Query By Example
QBF Query by Form
QBIC Query By Image Content [IBM]
QBITS Quantum Bits
QC Quality Control
QD Querty/Dvorak
QDA Qualitative Data Analysis
QDOS Quick and Dirty Operating System
.QDI Quicken Dictionary (file name extension) [Intuit]
.QDT Quicken Data (file name extension) [Intuit]
QEMM Quarterdeck Expanded Memory Manager [Quarterdeck Corp.]
QFA Quick File Access
QFE Quick-Fix Engineering [Microsoft]
QFP Quad Flat Pack
QIC Quality Information Using Cycle Time [Hewlett-Packard] +
Quarter-Inch Cartridge
.QIF Quicken Import File/Interchange Format
(file name extension)
QLLC Qualified Logical Link Control
.QMT Quicken Memorized List (file name extension) [Intuit]
.QNX Quicken Indexes to Data (file name extension) [Intuit]
QOS Quality Of Service
QPG Quantum Phase Gate
QPSK Quadrature Phase Shift Keying
QSAM Queued Sequential Access Method
QTC Quicktime Conferencing [Macintosh]
QTVR Quicktime Virtual Reality
R...
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TOP | UP to Q | DN to S | BOTTOM |RA Remote Assistance + Return Authorization
.RA Real Audio (file name extension)
RACF Resource Access Control Facility
RAD Rapid Application Development
RADAR Radio Detection And Ranging +
Rights, Availabilities, Distribution Analysis
and Reporting [Disney]
RADB Routing Arbiter Data Base
RADIUS Remote Authentication Dial-In User Service
RADSL Rate Adaptive Digital Subscriber Line
RAG Row Address Generator
RAID Redundant Arrays of Independent Disks +
Redundant Arrays of Independent Drives +
Redundant Arrays of Inexpensive Disks
RAIS Redundant Arrays of Inexpensive Systems
RALU Register Arithmetic Logic Unit
RAM Random Access Memory
.RAM Real Audio Metafile (file name extension)
RAMDAC Random Access Memory Digital-to-Analog
Converter [Sierra]
RAMP Remote Access Maintenance Protocol [Internet]
RAN Radio Access Network + Regional Advanced Network
RAND Random
RAP Rapid Application Prototyping
RARP Reverse Address Resolution Protocol
RAS Random Access Storage +
Reader Admission System [British Library] +
Reliability, Availability and Serviceability +
Remote Access Service + Row Address Select
RASAPI Remote Access Service Application Programming
Interface [Microsoft]
.RAT Rating (file name extension)
RAVE Rendering Acceleration Virtual Engine [Apple Computer]
.RAW Raw Data (file name extension)
RB Right Button (of 2 or 3 button Mouse)
RBBS Remote Bulletin Board System
RBCS Remote Bar Code System
RBOC Regional Bell Operating Company
.RC Resource (file name extension)
RC1 Release Candidate 1 [Microsoft]
RCD Redistribution Control Descriptor
RCL Rotate Carry Left
RCP Remote Control Panel + Remote Copy [Internet] +
Restore Cursor Position + Rich Client Platform
RCPT Recipient
RCR Rotate Carry Right
RCS Records Communications Switching System +
Revision Control System [Unix]
RD Receive Data + Remove Directory
R&D Research and Development
RDA Remote Database Access
RDB Receive Data Buffer + Relational Database
RDBMS Relational Database Management System
RDCLK Received Timing Clock
RDF Resource Description Framework [W3C]
RDIF Radio Frequency Indentification (tag)
RDN Relative Distinguished Name
RDO Remote Data Object
RDP Reliable Datagram Protocol + Remote Desktop Protocol
RDR Remote Data Recovery
RDRAM Rambus DRAM
RDSL (See DSL)
RDSR Receiver Data Service Request
RDTO Receive Data Transfer Offset [IBM]
RDX Realistic Display Mixer
.REC Recorder (file name extension) +
Recreational or Entertainment Activities (Domain
Name) [Internet]
REC. Recreation [USENET Newsgroup Category]
.REF Reference (file name extension)
REG Register
REGAL Rigid Epoxy Glass Acrylic Laminate
REGEDIT Registry Editor [Microsoft]
RELSECT Relative Sector
REM Remark + Remote + Ring Error Monitor
REN Rename + Ringer Equivalence Number
REP Repeat
REPE Repeat while Equal
REPNE Repeat while Not Equal
REPNZ Repeat while Not Zero
REPZ Repeat while Zero
REQ Request
REREG Re-Register
RES Remote Execution Service + Reset + Resolution
.RES Resource (file name extension)
RET Resolution Enhancement Technology [HP] + Return
RETR Retrieve
REX Relocatable Executable
REXEC Remote Execution
REXX Restructured Extended Executor (language) [IBM]
RF Radio Frequency
RFC Request For Comments [Internet]
RFD Reduced Function Device +
Request for Discussion [Internet]
RFI Radio Frequency Interference + Request for Information
RFID Radio Frequency Identification
RFP Request for Proposal
RFQ Request for Quotation
RFS Remote File Sharing + Remote File System
RFT Revisable Form Text + Rich Text Format
RFU Reserved For Future Use
RGB Red-Green-Blue (color model)
RI Referential Integrity + Ring Indicate
RID Relative Identifier
RIFF Resource Interchange File Format [Microsoft]
RIM Remote Installation and Maintenance [Microsoft] +
Research In Motion (company) + Ring Indicator Monitor
RIME RelayNet International Message Exchange
RIP Raster Image Processor + Remote Imaging Protocol +
Routing Information Protocol [Novell]
RIPEM Riordan's Internet Privacy Enhanced Mail
RIPS Raster Image Processing System
RISC Reduced Instruction Set Computing
RIT Raw Input Thread [Microsoft]
RJE Remote Job Entry
RLD Received Line Detect
RLE Run Length Encoded
RLL Run Length Limited
RLN Remote LAN Node [DCA]
RLOGIN Remote Login
RLSD Received Line Signal Detected
RLSI * Ridiculously Large-Scale Integration
RM Reset Mode
RMA Return Material Authorization +
Return to Manufacturer Authorization
RMB Right Mouse Button
RMC Raptor Management Console [Symantec]
RMDIR Remove Directory
RMI Remote Messaging Interface +
Remote Method Invocation [Sun]
RMON Remote Monitor/Monitoring
RMP Remote Maintenance Processor [IBM]
RMS Record Management Services + Root Mean Square
RMW Read-Modify-Write
RN Read News [Internet]
RNA Remote Network Access [Microsoft]
RNC Radio Network Controller
RND Random
RNG Random Number Generator
RNP Regional Network Provider
R-O Read Only
ROB Reorder Buffer [Intel]
ROI Return On Investment
ROL Rotate Left
ROLAP Relational On-Line Analytical Processing
ROM Read Only Memory
ROOM Real-Time Object-Oriented Modeling
ROP Raster Operation + RISC Operation
ROPES Rapid Object-Oriented Process for
Embedded Systems
ROR Rotate Right
ROS Read-Only Storage [IBM]
ROSCOE Remote Operating System Conversational Online
Environment
ROT Running Object Table
RPC Remote Procedure Call
RPE Remote Program Execution
RPG Report Program Generator (Programming Language)
RPL Resident Programming Language +
Requested Privilege Level
RPM Revolutions Per Minute
RPN Real Page Number + Reverse Polish Notation
RPRINTER Remote Printer [NetWare]
RPPROM Reprogrammable PROM
RPR Relative Performance Rating
RPT Repeat
RPQ Request for Price Quotation
RQBE Relational Query By Example [Fox Pro]
RR Real Reality
RRP Recommended Retail Price
RS Radio Shack +
Recommended Standard (as in RS-232) [EIA] +
Record Separator + Request to Send
RSA Rural Service Area
RSA129 (129 digit cryptographic security number named after
its inventors: Drs. Ronald L. Rivest, Adi Shamir and
Leonard M. Adleman)
RSAC Recreational Software Advisory Council
RSCS Remote Spooling Communications System
RSD Route Server Daemon
RSH Remote Shell
RSI Repetitive Strain Injury (Carpal Tunnel Syndrome)
RSL Request-and-Status Link
RSP Required Space Character + Response
RSPX Remote Sequenced Packet Exchange
RSS Really Simple Syndication + Reduced Space Symbology +
RDF Site Summary + Rich Site Summary
RST Reset + Restart
RSTS Resource Sharing Time Sharing [Digital]
RSVP Resource Reservation Protocol
RSX Realistic Sound Experience +
Real Time Resource Sharing Executive
RT Real Time + RISC Technology + Run Time
R/T Receive/Transmit
RTAM Remote Terminal Access Method
RTC Real-Time Clock
RTCP Real-Time Control Protocol
RTDM Real-Time Data Migration
RTEL Reverse Telnet [Internet]
RTF Rich Text Format
RTI Run Time Infrastructure
RTL Raster Transfer Language +
Register Transfer Language/Level +
Resistor Transistor Logic + Right-To-Left +
Run Time Library
RTM Response Time Monitor + Runtime Manager [Borland]
RTMP Routing Table Maintenance Protocol
RTN Reuters Transaction Network
RTOS Real-Time Operating System
RTP Rapid Transport Protocol + Real Time Protocol +
Real-Time Transport Protocol
RTS Remote Takeover System + Ready/Request To Send
RTSP Real-Time Streaming Protocol
RTTI Runtime Type Identification/Information
RTTY Radio Teletypewriter (Communications)
RTV Real Time Video
RTX Run Time Extension
RUN Rewind/Unload [IBM]
RVA Relative Virtual Address
RVI Reverse Interrupt
R/W Read/Write
RWIN Receive Window
RWM Read-Write Memory
RX Receiver
RXD Receive Data
