178
Glossary
LED (Light Emitting Diode)
uses light-emitting diodes (LEDs) as the source of light,
which offers long life and high efficiency output. Multiple
diodes are used together, since the light created by
individual light-emitting diodes is small compared to
incandescent and compact fluorescent lamps.
LCD (Liquid Crystal Display)
liquid substance between two transparent electrode panels.
When an electric current passes through the electrodes, the
molecules in the liquid form a crystalline pattern that
polarizes the light passing through it. A filter over the
electrodes permits only non-polarized light to pass to the
surface of the display, creating light and dark pixels.
—To move information from a storage device (such as a
load
hard disk) into memory for processing.
local area network
logical drive
operating system as a separate disk drive. A system's logical
drives may differ from its physical drives. For example, a
single hard disk drive may be partitioned into two or more
logical drives.
M
memory
where programs are run and data is temporarily stored and
processed. Memory can be volatile and hold data
temporarily, such as RAM, or it can be non-volatile and hold
data permanently, such as ROM. A computer's main
memory is RAM. See also
microprocessor
motherboard
contains the processor, memory, and other primary
components.
MS-DOS prompt
multi-function drive
CD and DVD media.
multimedia
sound, animation, and video in a computer program or
presentation.
—See
—A section of a disk that is recognized by the
—Typically refers to the computer's main memory,
—See
—The computer's main circuit board that
—See
—A DVD drive that can read and write to
—A combination of two or more media, such as
—A solid state lamp (SSL) that
—A type of display that uses a
LAN
.
RAM, ROM
Central Processing Unit (CPU)
system prompt
.
.
.