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interrupt request: A signal that gives a component access to the
I/O: Input/output. Refers to acceptance and transfer of data to and from a
I/O devices: Equipment used to communicate with the computer and
J
jumper: A small clip or wire that allows you to change the hardware
K
K: Taken from the Greek word kilo, meaning 1000; often used as
KB: See kilobyte.
keyboard: An input device containing switches that are activated by
kilobyte (KB): A unit of data storage equal to 1024 bytes. See also byte
L
level 2 cache: See cache.
Light Emitting Diode (LED): A semiconductor device that emits light when
Liquid Crystal Display (LCD): Liquid crystal sealed between two sheets
LSI: Large Scale Integration. 1) A technology that allows the inclusion of up
User's Manual
processor.
computer.
transfer data to and from it.
characteristics by electrically connecting two points of a circuit.
equivalent to 1024, or 2 raised to the 10th power. See also byte and
kilobyte.
manually pressing marked keys. Each keystroke activates a switch
that transmits a specific code to the computer. For each key, the
transmitted code is, in turn, representative of the (ASCII) character
marked on the key.
and megabit.
a current is applied.
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 darkens the liquid crystal to provide contrast to lighted
portions of the display.
to 100,000 simple logic gates on a single chip. 2) An integrated
circuit that uses the large scale integration.
Glossary
Glossary-9
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