Toshiba Satellite L555D-S7005 User Manual page 185

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
IrDA 1.1: An industry standard that enables cableless infrared serial data
K
K: Taken from the Greek word kilo, meaning 1000; often used as equivalent
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
L1 cache: Level one cache. Memory cache built into the processor to help
L2 cache: Memory cache installed on the motherboard to help improve
LAN: A group of computers or other devices dispersed over a relatively
Light Emitting Diode (LED): A semiconductor device that emits light when
Liquid Crystal Display (LCD): Liquid crystal sealed between two sheets of
M
main board: See motherboard.
megabyte (MB): A unit of data storage equal to 1024 kilobytes. See also
User's Manual
processor.
computer.
transfer data to and from it.
transfer at speeds of up to 4 Mbps.
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 megabyte.
improve processing speed. See also cache memory, L2 cache.
processing speed. It is slower than L1 cache and faster than main
memory. See also cache memory, L1 cache.
limited area and connected by a communications link that enables
any device to interact with any other on the network.
a current is applied.
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.
kilobyte.
L550/L555/L550D/L555D
Glossary-9