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User’s Manual Glossary-6
Glossary
L
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 large scale integration.
M
megabyte (MB): A unit of data storage equal to 1024 kilobytes. See also
kilobyte.
mode: A method of operation, for example, the boot mode, Sleep 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 also CRT.
MP3: An audio compression standard that enables high-quality
transmission and real-time playback of sound files.
N
numeric keypad overlay: A feature that allows you to use certain keys on
the keyboard to perform numeric entry, or to control cursor and page
movement.
O
operating system: A group of programs that controls the basic operation
of a computer. Operating system functions include interpreting
programs, creating data files, and controlling the transmission and
receipt (input/output) of data to and from memory and peripheral
devices.
output: The results of a computer operation. Output commonly indicates
data.
1) printed on paper, 2) displayed at a terminal, 3) sent through the
serial port of internal modem, or 4) stored on some magnetic media.