IBM RT PC Options Installation page 201

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.
rlXed-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.
X-2 Options Installation
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 000000. 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 converts the signal received to data for the
computer.
module. See component.