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200 Glossary
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.
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 Dell OpenManage
™
Hardware
Instrumentation Package.
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 and later Windows operating systems.
HTTPS
Abbreviation for HyperText Transmission Protocol,
Secure. HTTPS is a variant of HTTP used by Web
browsers for handling secure transactions. HTTPS is a
unique protocol that is simply SSL underneath HTTP.
You need to use "https://" for HTTP URLs with SSL,
whereas you continue to use "http://" for HTTP URLs
without SSL.
Hz
Abbreviation for hertz.
ICES
Abbreviation for Interference-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.
I/O
Abbreviation for input/output. The keyboard is an
input device, and a printer is an output device. In
general, I/O activity can be differentiated from
computational activity. For example, when a program
sends a document to the printer, it is engaging in
output activity; when the program sorts a list of terms,
it is engaging in computational activity.
ID
Abbreviation for identification.