Toshiba Satellite Pro A120 (PSAC1) - Manual (Page 196)

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.
IrDA 1.1: An industry standard that enables cableless infrared serial data
transfer at speeds of up to 4 Mbps.
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 megabyte.
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 large scale integration.
M
main board: See motherboard.
megabyte (MB): A unit of data storage equal to 1024 kilobytes. See also
kilobyte.