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Toshiba Tecra A7 User Manual

Page 180

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User’s Manual

Glossary-12

Glossary

pixel: A picture element. The smallest dot that can be made on a display or

printer. Also called a pel.

plug and play: A capability with Windows that enables the system to

automatically recognize connections of external devices and make

the necessary configurations in the computer.

Port Replicator: Devices that enables one-point connection to a number of

peripheral devices and provides additional ports and slots.

port: The electrical connection through which the computer sends and

receives data to and from devices or other computers.

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.

RCA jack: A single-pin connector that carries composite video signals,

which include both contrast and color information. See also S-video.

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.

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 nonvolatile memory chip manufactured to

contain information that controls the computer’s basic operation.

You cannot access or change information stored in ROM.

RS-232C: The Electronic Industries Association (EIA) interface standard

that describes the 25-pin connector interface and control, data, and

status signals that allow asynchronous communications between

computers, printers, communications and other peripheral devices.