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The PC Glossary

Definitions of Computer and Internet Terms

Computer Terms Beginning with "R"

RADCAB RADCAB is a mnemonic acronym that helps people evaluate information found online. It was created by Karen...
RAID Stands for "Redundant Array of Independent Disks." RAID is a method of storing data on multiple hard disks. When...
RAM Stands for "Random Access Memory," and is pronounced like the male sheep. RAM is made up of small memory chips that...
Raster Graphic Most images you see on your computer screen are raster graphics. Pictures found on the Web and photos you import from...
Raw Data Raw data is unprocessed computer data. This information may be stored in a file, or may just be a collection of...
Raw File A raw file is a collection of unprocessed data. This means the file has not been altered, compressed, or manipulated...
RDF Stands for "Resource Description Framework." RDF is a specification that defines how metadata, or descriptive...
RDRAM Stands for "Rambus Dynamic Random Access Memory." It is a type of RAM made by Rambus (big surprise) and is the fastest...
Readme A readme file, often named "READ ME" to get the user's attention, is a text file containing useful information about a...
Real Number Real numbers include all positive and negative numbers. They may be integers (e.g. -12), rational numbers (e.g...
Real-Time When an event or function is processed instantaneously, it is said to occur in real-time. To say something takes place...
Recursion Recursion is a process in which a function calls itself as a subroutine. This allows the function to be repeated...
Recursive Function A recursive function is a function that calls itself during its execution. This enables the function to repeat itself...
Recycle Bin The Recycle Bin in used by Windows computers to store deleted items. It temporarily stores files and folders before...
Refresh Refresh is a command that reloads the contents of a window or Web page with the most current data. For example, a...
Refresh Rate Computer monitors often have a "maximum refresh rate" listed in their technical specifications. This number, measured...
Registry This is a database used by Microsoft Windows to store configuration information about the software installed on a...
Reimage Reimaging is the process of restoring data to a hard disk from a disk image. When a hard disk is reimaged, the data on...
Remote Access Remote access is just what it sounds like -- the ability to access your computer from a remote location. Programs like...
Remote Desktop Remote desktop technology makes it possible to view another computer's desktop on your computer. This means you can...
Remote User A "remote user" is how a woman might refer to her husband while he is watching TV. In the computer world, however, a...
Repeater A repeater is an electronic device that relays a transmitted signal. It receives a signal on a specific frequency...
Resolution This term can describe either how many pixels a monitor can display or how fine a printer can print. 1. Monitors. A...
Restore The word "restore" means to return something to its former condition. Therefore, when you restore a computer or other...
RFID RFID is short for "Radio-Frequency Identification." RFID tags are small integrated circuits that can be scanned with a...
RGB Stands for "Red Green Blue." It refers to the three hues of light (red, green, and blue, for those of you that are a...
Rich Text Rich text is more exciting than plain text. It supports text formatting, such as bold, italics, and underlining, as...
Right Click Most computer mice have at least two mouse buttons. When you press the left one, it is called a left click. When you...
Ripcording Recording audio with a computer involves capturing an audio signal and saving it digitally on a hard drive. Ripping an...
RISC Stands for "Reduced Instruction Set Computing,"and is pronounced "risk." It is arguably the fastest and most...
ROM Stands for "Read-Only Memory." Please do not confuse this term with RAM or a hard drive, as many people already do...
Root Root, or the "root node," refers to the top level of a file system. Since file systems are organized by directories...
Rootkit A rootkit is not a collection of tree roots, as you might be picturing in your head. Instead, a rootkit is a group of...
Rosetta Rosetta is technology included in (Mac OS X|os_x) that allows software written for PowerPC processors to run on Intel...
Router This is a hardware device that routes data (hence the name) from a local area network (LAN) to another network...
RPC Stands for "Remote Procedure Call." Most computer programs run procedures, or sets of instructions, using the...
RPM Stands for "Revenue Per 1,000 Impressions." RPM is similar to CPM, but measures the revenue from 1,000 ads impressions...
RSS Stands for "RDF Site Summary," but is commonly referred to as "Really Simple Syndication." RSS is method of providing...
RTE Stands for "Runtime Environment." As soon as a software program is executed, it is in a runtime state. In this state...
RTF Stands for "Rich Text Format." RTF is a file format standardized by Microsoft for creating formatted text files...
Ruby While in the physical world, "ruby" refers to a red gemstone, in the computer world, ruby is an object-oriented...
Runtime When a program is running, or executing, it is said to be in runtime. The term is mostly used by software developers...
RUP Stands for "Rational Unified Process." RUP is a software development process from Rational, a division of IBM. It...

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