IBM RT PC, Options Installation

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X-2 Options Installation
disk. A flat, circular plate with magnetic
surfaces on which information can be
stored.
disk drive. See
fixed-disk drive
.
diskette. A thin, flexible magnetic plate
that is permanently sealed in a protective
cover. A diskette is used to store
information copied from a fixed disk.
diskette drive. The mechanism used to
read and write information on diskettes.
display screen. The part of the display
device that displays information visually.
EIA. Electronic Industries Association.
fixed-disk drive. The mechanism used to
read and write information on a fixed disk.
graphics. A type of data created from
fundamental drawing units such as lines,
geometric shapes, curves, and so on.
hardware. The equipment, as opposed to
the programming or software, of a system.
I/O. See
input/output
.
input/output (I/O). Devices in a
computing system that enter data into the
system, receive data from the system, or
both.
jack. A device to which a wire or wires of
an electrical circuit can be attached. The
jack is designed for insertion of a plug.
See
connector
.
jumper. A special length of wire
connecting two pins of an adapter or
printed circuit card.
K byte (Kb). 1024 bytes.
keylock feature. A security feature
in which a lock and key can be used to
restrict use of a system or display station.
kg. kilogram; 1000 grams.
kilogram. The fundamental unit of mass
in the International System; about 2.2046
pounds.
load. To place a diskette into a diskette
drive.
m. See meter .
M. Mega; 1 000 000. In referring to
computer memory, 1 048 576 bytes.
menu. A displayed list of items from
which an operator can select tasks.
meter. A measurement of distance equal
to 39.37 inches.
mm. Millimeter. A metric unit of measure
equivalent to 0.0394 inches.
mouse. A small user-input device
externally attached to the system unit.
modem. See modulator-demodulator .
modulator-demodulator (modem).
A device that converts data from
the computer to a signal that can be
transmitted on a communications line, and