| Term | Description |
|---|
| R&D | Research and Development
|
| R-O | Read Only
|
| R/T | Receive/Transmit
|
| R/W | Read/Write
|
| RA | Remote Assistance + Return Authorization
|
| 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 Disk | Also called a virtual drive.A portion of RAMthat is used as if it were a diskdrive. RAM drives are much faster than hard disks because your computer canread information faster from memory than from a hard disk. However, informationon a RAM drive is lost when you turn off or reboot your computer. |
| RAM-Resident | A program remaining in memory after it hasreturned control of the computer back to the operating system. RAM-residentprograms either wait or operate in the background while applications are active.Also called TSRs(Terminate and Stay Resident) in IBM PCand compatible computers. |
| RAMDAC | Random Access Memory Digital-to-Analog
Converter [Sierra]
|
| RAMP | Remote Access Maintenance Protocol [Internet]
|
| RAN | Radio Access Network + Regional Advanced Network
|
| RAND | Random
|
| random access | Also called "dynamic access" this indicates that data can be selected without having to skip over earlier data first. This is the way that a CD, record, laserdisc, or DVD will behave -- it is easy to selectively play a particular track without having to fast forward through earlier tracks. The other common behavior is called sequential access. |
| 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]
|
| Raster Font | See screenfont |
| RAVE | Rendering Acceleration Virtual Engine [Apple Computer]
|
| RB | Right Button (of 2 or 3 button Mouse)
|
| RBBS | Remote Bulletin Board System
|
| RBCS | Remote Bar Code System
|
| RBOC | Regional Bell Operating Company
|
| RCL | Rotate Carry Left
|
| RCP | Remote Control Panel + Remote Copy [Internet] +
Restore Cursor Position
|
| RCPT | Recipient
|
| RCR | Rotate Carry Right
|
| RCS | Records Communications Switching System +
Revision Control System [Unix]
|
| RD | Receive Data + Remove Directory
|
| 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
|
| Read-Only File | A file that you can read but cannot makechanges to. |
| Real Audio | A software system for playing sound files inreal time over the internet.Produced by Progressive Networks. |
| real-time | Something that happens in real-time will keep up with the events around it and never give any sort of "please wait" message. |
| REC. | Recreation [USENET Newsgroup Category]
|
| 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
|
| Repeater | A device used in networksto extend cabling distances by amplifying or regenerating signals. Used to joinlengths of network cables, or to split a network cable into multiple segments.You might also find repeaters useful if you want to use different types of cablein your network. For example, you could connect an Ethernetnetwork with 10Base-Tcable to one on a thickcable. |
| 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
|
| Resolution | Indicates the number ofdots (or pixels)that make up an image on a screen or printer. The higher the resolution, thefiner and smoother images can appear when displayed at a given size. |
| 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
|
| RFD | 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]
|
| 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
|
| ROB | Reorder Buffer [Intel]
|
| robot | A robot (or 'bot for short) in the computer sense is a program designed to automate some task, often just sending messages or collecting information. A spider is a type of robot designed to traverse the web performing some task (usually collecting data). |
| robust | The adjective robust is used to describe programs that are better designed, have fewer bugs, and are less likely to crash. |
| ROI | Return On Investment
|
| ROL | Rotate Left
|
| ROLAP | Relational On-Line Analytical Processing
|
| ROM | Read Only Memory
|
| ROOM | Real-Time Object-Oriented Modeling
|
| Root | The top-level directoryof a disk.In Unix,it is also a name for the "superuser" account. |
| Root Folder | The top-level folderof a disk. |
| 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
|
| Router | Hardware and software that routesdata between similar or dissimilar networkson the protocollevel. Routers can support more than one protocol. Routers are used in someplaces on the U of C campus to allow AppleTalknetworks to connect to the backboneof the campus EtherNetnetwork. Routers can actively direct messages between separate networks (forexample, an Ethernet network and a tokenring network). They make decisions about which path through the networktraffic will follow. Each network connected by the router has a unique identitywith its own Internetaddress. |
| RPC | Remote Procedure Call
|
| RPG | Report Program Generator (Programming Language)
|
| RPL | Resident Programming Language +
Requested Privilege Level
|
| RPN | Real Page Number + Reverse Polish Notation
|
| RPPROM | Reprogrammable PROM
|
| RPQ | Request for Price Quotation
|
| RPR | Relative Performance Rating
|
| RPRINTER | Remote Printer [NetWare]
|
| RPT | Repeat
|
| 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
|
| 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
|
| RSPX | Remote Sequenced Packet Exchange
|
| RSS | Really Simple Syndication + 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
|
| 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
|
| 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 + 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
|
| Ruby | Ruby is an interpreted, object-oriented language. Ruby was fairly heavily influenced by Perl, so people familiar with that language can typically transition to Ruby easily. |
| RUN | Rewind/Unload [IBM]
|
| RVA | Relative Virtual Address
|
| RVI | Reverse Interrupt
|
| RWIN | Receive Window
|
| RWM | Read-Write Memory
|
| RX | Receiver
|
| RXD | Receive Data
|
