Reference Guide

676 Glossary
G
Abbreviation for gravities.
GB
Abbreviation for gigabyte(s). A gigabyte equals
1,024 megabytes or 1,073,741,824 bytes.
graphics coprocessor
See coprocessor.
graphics mode
A video mode that can be defined as x horizontal by
y vertical pixels by z colors.
group
As it relates to DMI, a group is a data structure that
defines common information, or attributes, about a
manageable component.
GTL
Abbreviation for ground termination logic.
GUI
Acronym for graphical user interface.
h
Abbreviation for hexadecimal. A base-16 numbering
system, often used in programming to identify
addresses in the computer’s RAM and I/O memory
addresses for devices. The sequence of decimal
numbers from 0 through 16, for example, is expressed
in hexadecimal notation as: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A,
B, C, D, E, F, 10. In text, hexadecimal numbers are
often followed by
h .
heat sink
A metal plate with metal pegs or ribs that help dissipate
heat. Most microprocessors include a heat sink.
HIP
Abbreviation for Hardware Instrumentation
Package (HIP).
HMA
Abbreviation for high memory area. The first 64 KB of
extended memory above 1 MB. A memory manager
that conforms to the XMS can make the HMA a direct
extension of conventional memory. See also
upper memory area and XMM.
host adapter
A host adapter implements communication between
the computer’s bus and the controller for a peripheral
device. (hard-drive controller subsystems include
integrated host adapter circuitry.) To add a SCSI
expansion bus to your system, you must install or
connect the appropriate host adapter.
hot plug
The ability to remove and replace a redundant part
while the system is being used. Also called a "hot spare."
HPFS
Abbreviation for the High Performance File System
option in the Windows NT operating systems.
Hz
Abbreviation for hertz.
ICES
Abbreviation for Interface-Causing Equipment
Standard (in Canada).
ICU
Abbreviation for ISA Configuration Utility.
IDE
Abbreviation for Integrated Device Electronics. IDE is
a computer system interface, used primarily for hard
drives and CDs.