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8 Dell Precision 410 Desktop Systems User’s Guide
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An instruction and data cache built in to
the microprocessor. The Intel Pentium
microprocessor 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;
Acronym for Internetwork Packet
eXchange.
,3;63;
Acronym for Internetwork Packet
eXchange/Sequenced Packet eXchange
,54
Abbreviation for interrupt request. A sig-
nal that data is about to be sent to or
received by a peripheral device travels by
an IRQ line to the microprocessor. Each
peripheral connection must be assigned
an IRQ number. For example, the first se-
rial 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.
MXPSHU
Jumpers are small blocks on a circuit
board with two or more pins emerging
from them. Plastic plugs containing a wire
fit down over the pins. The wire connects
the pins and creates a circuit. Jumpers
provide a simple and reversible method of
changing the circuitry in a printed circuit
board.
.
Abbreviation for kilo-, indicating 1,000.
.%
Abbreviation for kilobyte(s), 1,024 bytes.
.%VHF
Abbreviation for kilobyte(s) per second.
.ELWV
Abbreviation for kilobit(s), 1,024 bits.
.ELWVVHF
Abbreviation for kilobit(s) per second.
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A command requiring you to press multi-
ple 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 light-emitting diode. An
electronic device that lights up when a
current is passed through it.
ORFDO EXV
On a computer with local-bus expansion
capability, certain peripheral devices
(such as the video adapter circuitry) can
be designed to run much faster than they
would with a traditional expansion bus.
Some local-bus designs allow peripherals
to run at the same speed and with the
same width data path as the computer’s
microprocessor.
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