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8 Dell PowerEdge 6300 Systems User’s Guide
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A technique for increasing video resolu-
tion by only updating alternate horizontal
lines on the screen. Because interlacing
can result in noticeable screen flicker,
most users prefer noninterlaced video
adapter resolutions.
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An instruction and data cache built in to
the microprocessor. The Pentium micro-
processor, for example, includes a 16-KB
internal cache, which is set up as an 8-KB
read-only instruction cache and an 8-KB
read/write data cache.
,3
Abbreviation for Internet Protocol.
,3;
Acronym for internetwork packet
exchange.
,54
Abbreviation for interrupt request. A sig-
nal that data is about to be sent to or
received by a peripheral travels by an IRQ
line to the microprocessor. Each peripher-
al connection must be assigned an IRQ
number. For example, the first serial port
in your computer (COM1) is assigned to
IRQ4 by default. Two devices can share
the same IRQ assignment, but you cannot
operate both devices simultaneously.
,6$
Acronym for Industry-Standard Architec-
ture. A 16-bit expansion bus design. The
expansion-card connectors in an ISA com-
puter are also compatible with 8-bit ISA
expansion cards.
,7(
Abbreviation for information technology
equipment.
-(,'$
Acronym for Japanese Electronic Industry
Development Association.
.
Abbreviation for kilo-, indicating 1,000.
.%
Abbreviation for kilobyte(s), 1,024 bytes.
.%VHF
Abbreviation for kilobyte(s) per second.
.EV
Abbreviation for kilobit(s), 1,024 bits.
.ESV
Abbreviation for kilobit(s) per second.
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A command requiring that you press mul-
tiple keys at the same time. For example,
you can reboot your computer by pressing
the <Ctrl><Alt><Del> key combination.
NJ
Abbreviation for kilogram(s), 1,000 grams.
N+]
Abbreviation for kilohertz, 1,000 hertz.
/$1
Acronym for local area network. A LAN
system is usually confined to the same
building or a few nearby buildings, with all
equipment linked by wiring dedicated
specifically to the LAN.
OE
Abbreviation for pound(s).
/&'
Abbreviation for liquid crystal display. A
low-power display often used for note-
book computers. An LCD consists of a
liquid crystal solution between two
sheets of polarizing material. An electric
current causes each crystal to act like a
shutter that can open to allow light past
or close to block the light.
/('
Abbreviation for light-emitting diode. An
electronic device that lights up when a
current is passed through it.
/,)
Acronym for low insertion force. Some
computers use LIF sockets and connec-
tors to allow devices such as the
microprocessor chip to be installed or re-
moved with minimal stress to the device.