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Disk
The collective term for diskettes and hard disks, the devices on
which the computer stores data magnetically.
Disk drive
The electromechanical device that reads data from and writes
data to a disk, tape, or other storage media. A diskette drive
accepts removable diskettes in its disk slot while a hard disk is
sealed inside a protective casing.
Diskette
A flat piece of flexible plastic coated with magnetic material
used to store the data written to it by the diskette drive. A
diskette can be transferred from one computer to another.
Display adapter card
A circuit board that can be installed in one of the computer’s
option slots to control the way a monitor displays text and
graphics. A VGA display adapter is built into your computer’s
main system board and video daughterboard. Also called video
card.
DOS
Disk Operating System. The generic term for the operating
system software that controls a computer and directs its input
and output functions. See also MS-DOS and Operating system.
Double-density
A type of diskette format that allows you to store twice as
much data as the standarddensity format. A 5.25-inch
double-density diskette can store 360KB of data. A 3.5-inch
double-density diskette can store 720KB of data.
8 Glossary