User's Manual

Glossary 221
LED
Abbreviation for light-emitting diode. An electronic device that lights up when a
current is passed through it.
local bus
On a computer with local-bus expansion capability, certain peripheral devices
(such as the video adapter circuitry) can be designed to run much faster than they
would with a traditional expansion bus. Some local-bus designs allow peripherals
to run at the same speed and with the same width data path as the computer's
microprocessor.
LOM
Acronym for LAN on Motherboard.
LPTn
The device names for the first through third parallel printer ports on your
computer are LPT1, LPT2, and LPT3.
LRA
Acronym for local response agent.
LS drive
A drive that uses laser servo technology to read LS 120 diskettes that hold up to
120 MB of data as well as standard 3.5-inch diskettes.
LSI
Acronym for large-scale integration.
LUN
Acronym for logical unit number, a code used to select a specific device among
several that share a SCSI ID.
mA
Abbreviation for milliampere(s).
mAh
Abbreviation for milliampere-hour(s).
math coprocessor
See coprocessor.