Glossary
Portégé A100
8
Portégé A100
Version
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L
level 2 cache:
See
cache.
Light Emitting Diode (LED):
A semiconductor device that emits light
when a current is applied.
Liquid Crystal Display (LCD):
Liquid crystal sealed between two sheets
of glass coated with transparent conducting material. The viewing-
side coating is etched into character forming segments with leads
that extend to the edge of the glass. Applying a voltage between
the glass sheets alters the brightness of the liquid crystal.
LSI:
Large Scale Integration. 1) A technology that allows the inclusion of
up to 100,000 simple logic gates on a single chip. 2) An integrated
circuit that uses the large scale integration.
M
main board:
See motherboard.
megabyte (MB):
A unit of data storage equal to 1024 kilobytes.
See also
kilobyte.
megahertz:
A unit of wave frequency that equals 1 million cycles per
second.
See also
hertz.
menu:
A software interface that displays a list of options on the screen.
Also called a screen.
microprocessor:
A hardware component contained in a single integrated
circuit that carries out instructions. Also called the central
processing unit (CPU), one of the main parts of the computer.
mode:
A method of operation, for example, the boot mode, standby
mode or the hibernation mode.
modem:
Derived from modulator/demodulator, a device that converts
(modulates) digital data for transmission over telephone lines and
then converts modulated data (demodulates) to digital format
where received.
monitor:
A device that uses rows and columns of pixels to display
alphanumeric characters or graphic images.
See
CRT.
motherboard:
A name sometimes used to refer to the main printed circuit
board in processing equipment. It usually contains integrated
circuits that perform the processor’s basic functions and provides
connectors for adding other boards that perform special functions.
Sometimes called a main board.
MP3:
An audio compression standard that enables high-quality
transmission and real-time playback of sound files.
