Zenith Data Systems MT2000 Cache memory, CD-ROM drive, Centronics port, COM1 or COM2, Command

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C

cache memory	A very fast, limited portion of RAM set aside for temporary
	storage of data for direct access by the microprocessor.
CD-ROM drive	(Compact Disk ROM drive) A type of mass storage device that
	reads information from a compact disk.
Centronics port	An industry standard parallel port. See also parallel port.
CGA	(Color Graphics Adapter) A type of video display system that
	provides low-resolution text and graphics on TTL monochrome
	and color monitors.
CMOS	(Complimentary Metal-Oxide Semiconductor) A type of low-
	power integrated circuit used in computers. See also TTL.
COM1 or COM2	The name you can assign a serial port to set or change its
	address. See also serial port.
command	An instruction that directs the computer to perform a particular
	operation.
configuration	The way in which a computer is set up to operate. Some
	configurable options include CPU speed, serial port designation,
	and memory allocation.
coprocessor	See math coprocessor.
CPU	(Central Processing Unit) See microprocessor.
CRT	(Cathode-Ray Tube) The type of video display used in monitors
	for desktop computers.

D

DC	(Direct Current) The type of current available in the
	rechargeable battery packs used in portable computers. See also
	AC.
default	The factory setting your computer uses unless you instruct it
	otherwise. For example, when powering up, the computer will
	boot from the default drive.
density	The capacity of information (bytes) that can be packed onto a
	storage device, such as a floppy disk.
device driver	A software program that a computer must use to recognize and
	operate certain hardware, such as a mouse or a video monitor.
disk drive	A device that stores data on a hard or floppy disk. A floppy disk
	drive requires a floppy disk to be inserted; a hard disk drive has
	a permanently encased hard disk.

Glossary