Toshiba Qosmio F20 (PQF22) - Manual (Page 274)

Glossary-12 User’s Manual
Glossary
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
S-Video: Short for Super-Video, a type of connection used by S-VHS
videocassette players, camcorders, DVD players, etc. to transmit
high-quality video signals.
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.
SIO: Serial Input/Output. The electronic 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.