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Tracks
Addressable, concentric circles on a disk, resembling the
grooves on a record, which help to divide the disk into separate
accessible areas.
UNIX
An operating system that supports multitasking and is suited
to multi-user environments. UNIX is compatible with a range
of computers, from personal computers to mainframes. See also
Operating system.
VGA
Video Graphics Array. A type of high-resolution display
adapter.
Video card
See Display adapter card.
Write-protect
To protect the data on a diskette from being changed by placing
a write-protect tab over the notch on a 5¼-inch diskette or by
setting the write-protect switch on a 3½-inch diskette. When a
diskette is write-protected, you cannot erase, change, or record
over its contents.
Glossary 17