restart
GLOSSARY
restart: Resetting a computer without turning it off (also called ‘warm boot’ or ‘soft reset’). To restart the computer, press Ctrl + Alt + Del while the computer is on. See also boot.
RCA jack: A
RGB: Red, green, and blue. A device that uses three input signals, each activating an electron gun for a primary additive color (red, green, and blue) or port for using such a device. See also CRT.
RJ11: A modular telephone jack.
ROM: Read Only Memory: A nonvola- tile memory chip manufactured to contain information that controls the computer’s basic operation. You cannot access or change information stored in ROM.
S
SCSI: Small Computer System Interface is an industry standard interface for connection of a variety of peripheral devices.
Glossary-12
serial: The handling of data bits one after the other.
serial communications: A communica- tions technique that uses as few as two interconnecting wires to send bits one after another.
serial interface: Refers to a type of information exchange that transmits information sequentially, one bit at a time. Contrast: Parallel interface.
serial port: A communications port to which you can connect devices, such as a modem, mouse, or serial printer.
SIO: Serial Input/Output. The elec- tronic methodology used in serial data transmission.
soft key: Key combinations that emulate keys on the IBM keyboard, change some configuration options, stop program execution, and access the numeric keypad overlay.
software: The set of programs, procedures and related documentation associated with a computer system. Specifically refers to computer pro- grams that direct and control the computer system’s activities. See also hardware.
stop bit: One or more bits of a byte that follow the transmitted character or group codes in asynchronous serial communications.
subpixel: Three elements, one red, one green and blue (RGB), that make up a pixel on the color LCD. The computer sets subpixels independently, each may emit a different degree of brightness. See also pixel.
