Toshiba Tecra A4 (PTA40) - Manual (Page 198)

Glossary-12 User’s Manual
Glossary
Port Replicator: Devices that enables one-point connection to a number of
peripheral devices and provides additional ports and slots.
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’). To restart the computer, press Ctrl + Alt + Del while
the computer is on. See also boot.
RCA jack: A single-pin connector that carries composite video signals,
which include both contrast and colour information. See also S-
video.
RGB: Red, green, and blue. A device that uses three input signals, each
activating an electron gun for a primary additive colour (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.
S
SCSI: Small Computer System Interface is an industry standard interface
for connection of a variety of peripheral devices.
serial: The handling of data bits one after the other.