6 Glossary
L
LAN
(Local Area Network) A group of computers linked together within a limited area to
exchange information.
LCD
(Liquid Crystal Display) The type of video display used in portable computers.
LED
(Light-Emitting Diode) A small electronic device that glows when current flows through it.
LPT1 or LPT2
The name you can assign a parallel port to specify its address. See also parallel port.
LVD
Super-fast Ultra 2 SCSI Low Voltage Differential (LVD) Parallel SCSI Interface. A new
SCSI interface that provides greater I/O bandwidth, device connectivity, data reliability,
and longer cable lengths for Ultra2 SCSI hard disk drives. Note that in order to achieve
LVD performance all devices including cable, controller, and drive must support LVD.
M
(Megabyte)
1,048,576 bytes. See also byte.
math coprocessor
An IC that works with the microprocessor to speed up mathematical calculations.
memory
The circuitry in your computer that stores data and programs. See also EMS, extended
memory, RAM, and ROM.
microprocessor
The integrated circuit that processes data and controls the basic functions of the computer.
modem
A device used to exchange information with other computers over telephone or data lines.
module
A circuit board that plugs into a dedicated connector on the system board in your computer.
mouse
A small input device that you guide on a flat surface to control the cursor movement and
operation of the computer when using certain software programs.