Glossary 5
function key
The set of keys on the keyboard (usually F1 through F12) that let
you get help and error message information or quickly select
frequently used commands.
H
hard disk
A rigid magnetic storage device that provides fast access to stored
data.
hardware
The electrical and mechanical parts from which a computer is
made.
hertz
(Hz) A unit of frequency equal to one cycle per second.
hot key
Combination of two or three keys that you press simultaneously
for a particular function.
input/output
(I/O) The process of transferring data between the computer and
external devices.
IDE
Intelligent Drive Electronics. A hard disk drive type that has
controller electronics built into the drive and delivers high
throughput.
interface
A connection that enables two devices to communicate.
interrupt
A special control signal from an I/O device that diverts the
attention of the microprocessor from the program to a special
address.
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