NEC Express5800/LS2400 Guide de l'utilisateur Page 173

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Glossary 3
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.
DOS
(Disk Operating System) See operating system.
DRAM
(Dynamic RAM) See RAM.
E
ECC
(Error Checking and Correction) A method of detecting and correcting
errors.
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