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User’s Manual Glossary-12
Glossary
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): Volatile memory that can be written to
as well as read. Volatile here means that information in RAM is lost
when you turn off your computer. This type of memory is used for
your computer’s main memory. See also memory. Compare ROM.
resolution: A measure of the sharpness of the images that can be
produced by a printer or displayed on a screen. For a printer,
resolution is expressed in dots per inch (dpi). For a screen, it is
expressed as the number of pixels available horizontally and
vertically.
restart: Resetting a computer without turning it off (also called "warm
boot", "soft reset" or "reboot"). 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.
RJ45: A modular LAN jack.
Read Only Memory (ROM): Non-volatile memory that can be read but not
written to. Non-volatile here means that information in ROM remains
whether or not the computer is receiving power. This type of
memory is used to store your computer’s BIOS, which is essential
instructions the computer reads when you start it up. See also
BIOS, memory. Compare RAM.
S
S/P DIF: A standard of digital interface for audio.
SCSI: Small Computer System Interface is an industry standard interface
for connection of a variety of peripheral devices.
SD/SDHC Card: Secure Digital cards are flash memory widely used in a
variety of digital devices such as digital cameras and Personal
Digital Assistants.