Glossary
printed circuit board (PCB): A hardware component of a processor to which integrated circuits and other components are attached. The board itself is typically flat and rectangular, and constructed of fiberglass, to form the attachment surface.
program: A set of instructions a computer can execute that enables it to achieve a desired result. See also application.
prompt: A message the computer provides indicating it is ready for or requires information or an action from you.
R
Radio frequency interference (RFI) shield: A metal shield enclosing the printed circuit boards of the printer or computer to prevent radio and TV interference. All computer equipment generates radio frequency signals. The FCC regulates the amount of signals a computing device can allow past its shielding. A Class A device is sufficient for office use. Class B provides a more stringent classification for home equipment use. TOSHIBA portable computers comply with Class B computing device regulations.
Random Access Memory (RAM): High speed memory within the computer circuitry that can be read or written to.
restart: Resetting a computer without turning it off (also called “warm boot” or “soft reset”). See also boot.
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.
RJ45: A modular LAN jack.
ROM: Read Only Memory: A nonvolatile 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.
SD Card: Secure Digital cards are flash memory widely used in a variety of digital devices such as digital cameras and Personal Digital Assistants.
SECAM L: SECAM (Sequential Color Memory) is a broadcasting standard used in France.
serial communications: A communications technique that uses as few as two interconnecting wires to send bits one after another.
serial interface: Refer to a type of information exchange that transmits information sequentially, one bit at a time.
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