IBM 240 manual Irq

turned

off to save power. Whenbytespower (KB)is or megabytes

(MB)

of

turned on again, the computer immeinformation-

.

diately restores the same data and appli-

cations

as

when

hibernation

mode MHz .

Megahertz.

started, without restarting the operating

system.

microcode

.

One

or

more

microin-

structions

used

in

a

product as an alter-

high-resolution

mode

.

Video

resol- native

to

hard-wired

circuitry to

utions

that

are

greater

than

640implementx 480 functions

of

a

processor

or

pels.

other

system

component.

HPA .

High

performance

addressingMIDI. .

Musical Instrument Digital Inter-

face.

icon . A graphic symbol, displayed on a

screen, that a user can point tomodem with.

aA

device

that

connects

your

pointing

device such as a TrackPointcomputeror to

a

telephone

line,

allowing

it

mouse to select a particular functionto communicateor

with another computer at

software

application.

another

location.

IDE .

Integrated

device

electronicsparallel . port .

A

port

used

to

attach

such

devices

as

dot-matrix printers and

IR .

Infrared.

input/output

units;

it

transmits

data

1 byte

IRQ .

Interrupt

request.

at

a

time.

ISA .

partial

suspend

mode

.

A kind

of

Industry standard

architecturesuspend.

mode where

only a part of the

ISO .

system

components

use

power.

International

Organization

for

Standardization.

parity

check .

A

redundancy

check

by

JEIDA .

which a recalculated parity bit is com-

Japan

Electronics

Industry

Development Association.

pared with the pregiven parity bit.

kilobyte

(KB)

.

1024

bytes.

password

.

A

series

of

letters

or

numbers

that

you

designated

to

restrict

LAN .

Local

area

network.

access

to

your

computer.

LCD .

Liquid

crystal

display.

PC Card

.

A

card

that

is

based

on

the

PCMCIA

standard.

LPT1

or

LPT2

.

The

name

you

can

PCMCIA

.

Personal

Computer

Memory

assign

a

parallel

port

to

specify

its

Association.

address.

See

also

parallel

Card

International

port.

mAh .

Milliampere

hours.

pel .

Picture

element.

MCI .

Media

Control

Interface.

picture

element

.

In

computer graphics,

the

smallest

element

of

a

display

surface

megabyte

(MB)

.

1024

kilobytes.

that can be independently assigned color

About

intensity.

1 million

bytes.

and

memory

.

Often

referred

to

as

pixel .

Picture

element.

random-

access

memory

(RAM),

measured

in

kilo-

Glossary 153