Glossary 274
disk — A round, flat piece of material that can be magnetically
influenced to hold information in digital form, and used in the
production of magnetic disks, such as diskettes and hard disks.
Compare disc. See also diskette, hard disk.
disk drive — The device that reads and writes information and programs
on a diskette or hard disk. It rotates the disk at high speed past one or
more read/write heads.
diskette — A thin, flexible disk in a protective jacket that stores
magnetically encoded data. Diskettes can be removed from the
computer and come in two sizes: 5.25-inch and 3.5-inch. Your
computer uses 3.5-inch diskettes. See also double-density diskette,
high-density diskette.
document — Any file created with an application and, if saved to disk,
given a name by which it can be retrieved. See also file.
double-click — To press the AccuPoint control button or mouse button
rapidly twice without moving the AccuPoint or mouse. In the
Windows® operating system, this refers to the primary AccuPoint
control button or left mouse button, unless otherwise stated.
double-density diskette — A 3.5-inch diskette that can hold up to 720
KB of information (half the capacity of a high-density diskette). See
also diskette, high-density diskette.
download — (1) In communications, to receive a file from another
computer through a modem or network. (2) To send font data from
the computer to a printer. See also upload.
drag — To hold down the AccuPoint control button or mouse button
while moving the cursor to drag a selected object. In the Windows®
operating system, this refers to the primary AccuPoint control
button or left mouse button, unless otherwise stated.
driver — See device driver.
DVD — An individual digital versatile (or video) disc. See also DVD-
ROM.
DVD-ROM (digital versatile [or video] disc read-only memory) — A
very high-capacity storage medium that uses laser optics for reading
data. Each DVD-ROM can hold as much data as several CD-ROMs.
Compare CD-ROM.