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PC Card — A credit-card-sized expansion card designed to increase the capabilities of computers. PC Cards provide functions such as modem, fax/modem, hard disk drive, network adapter, sound card, or SCSI adapter. peripheral — Any device, such as a printer or joystick, that is attached to the computer and controlled by the computer’s CPU. pixel — Short for “picture element.” The smallest dot that can be produced on a screen or printer. Glossary Glossary Plug and Play — Generally, refers to the computer’s ability to automatically configure itself to work with peripheral devices. When capitalized, refers to a standard that, when followed by a device manufacturer, allows a computer to configure itself automatically to work with the device. pointing device — Any device, such as the TouchPad or a mouse, that enables you to move the cursor on the screen. port — A socket on the computer where you plug in a cable for connection to a network or a peripheral device. processor — See central processing unit (CPU). program — A set of instructions that can be executed by a computer. The general classes of programs (also called software) are operating system, application, and utility. See also operating system, application, utility. properties — The attributes of an object or device. For example, the properties of a file include the file’s type, size, and creation date. R RAM (random access memory) — Volatile memory that can be written to as well as read. Volatile here means that information in RAM is lost when you turn off your computer. This type of memory is used for your computer’s main memory. See also memory. Compare ROM. random access memory — See RAM. read-only memory — See ROM. reboot — See boot, restart. removable disk — A disk that can be removed from a disk drive. A diskette is one example of a removable disk. resolution — A measure of the sharpness of the images that can be produced by a printer or displayed on a screen. For a printer, resolution is expressed in dots per inch (dpi). For a screen, it is expressed as the number of pixels available horizontally and vertically. restart — Synonymous with reboot. To reset the computer by reloading the operating system without turning the computer off. See also boot. Glossary Glossary RJ11 — A modular connector used on most U.S. telephone systems and direct-connect modems. The RJ11 connector is a 6-wire connector. ROM (read-only memory) — Non-volatile memory that can be read but not written to. Non-volatile here means that information in ROM remains whether or not the computer is receiving power. This type of memory is used to store your computer’s BIOS, which is essential instructions the computer reads when you start it up. See also BIOS, memory. Compare RAM. S select — To highlight or otherwise specify text, data, or graphics with the intent to perform some operation on it. serial — Processes that occur one at a time. In communicat...

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