G
LOSSARY
Glossary-7
floppy disk: See diskette.
floppy disk drive (FDD): An electrome-
chanical device that reads and writes to
floppy disks. See also diskette.
Fn-esse: A TOSHIBA utility that lets
you assign functions to hotkeys.
folder: An icon in Windows used to
store documents or other folders.
format: The process of readying a
blank disk for its first use. Formatting
establishes the structure of the disk
that the operating system expects
before it writes files or programs onto
the disk.
function keys: The keys labeled F1
through F12 that tell the computer to
perform certain functions.
G
gigabyte (GB): A unit of data storage
equal to 1024 megabytes. See also
megabyte.
GND: Ground. An RS-232C signal
used in the exchange of data between a
computer and serial device.
graphics: The use of drawings,
pictures, or other images, such as
charts or graphs, to present informa-
tion.
H
hard disk: A non-removable disk
usually referred to as drive C. The
factory installs this disk and only a
trained engineer can remove it for
servicing. Also called fixed disk.
hard disk drive (HDD): An electro-
mechanical device that reads and
writes a hard disk. See also hard disk.
hardware: The physical electronic
and mechanical components of a
computer system: typically, the
computer itself, external disk drives,
etc. See also software and firmware.
hertz: A unit of wave frequency that
equals one cycle per second.
hexadecimal: The base 16 numbering
system composed of the digits 0
through 9 and the letters A, B, C, D, E,
and F.
host computer: The computer that
controls, regulates, and transmits
information to a device or another
computer.
hot dock/undock: Connecting or
disconnecting a device to or from the
computer while the computer’s power
is turned on.
hotkey: The computer’s feature in
which certain keys in combination
with the extended function key, Fn,
can be used to set system parameters,
such as speaker volume.
hotkey
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