Toshiba Tecra A4 (PTA42) - Manual (Page 165)

User’s Manual Glossary-9
Glossary
interface: 1) Hardware and/or software components of a system used
specifically to connect one system or device to another. 2) To
physically connect one system or device to another to exchange
information. 3) The point of contact between user, the computer, and
the program, for example, the keyboard or a menu.
interrupt request: A signal that gives a component access to the
processor.
I/O: Input/output. Refers to acceptance and transfer of data to and from a
computer.
I/O devices: Equipment used to communicate with the computer and
transfer data to and from it.
J
jumper: A small clip or wire that allows you to change the hardware
characteristics by electrically connecting two points of a circuit.
K
K: Taken from the Greek word kilo, meaning 1000; often used as equivalent
to 1024, or 2 raised to the 10th power. See also byte and kilobyte.
KB: See kilobyte.
keyboard: An input device containing switches that are activated by
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.
kilobyte (KB): A unit of data storage equal to 1024 bytes. See also byte
and megabit.
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 darkens the liquid crystal to provide contrast to lighted
portions of the display.
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.