8 Dell Precisi on 410 Desk top Syste m s U ser’s Guide
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An instruction and data cache built in to
the microprocessor. The Intel Pentium
micropro cessor includ es a 16-KB in ternal
cache, which is set up as an 8-KB read -
only instruction cache and an 8-KB read/
write dat a cache.
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Acronym for Internetwork Packet
eXchange.
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Acronym for Internetwork Packet
eXchange/Sequenced Packet eXchange
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Abbreviation for interrupt request. A sig-
nal that data is ab out to be sent to or
receive d by a peripheral device travel s by
an IRQ line to the microprocessor. Each
peripheral connection must be assigned
an IRQ number. For examp le, the firs t se-
rial port in your computer (COM1) is
assigned to IRQ4 by default. Two devices
can share the same IRQ assignment, but
you canno t opera t e both dev ic es
simultaneously.
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Acronym for Industry-Standard Architec-
ture. A 16-bit ex pa ns io n bus des ig n. Th e
expansion-card connectors in an ISA com-
puter are also compatible with 8-bit ISA
expansion cards.
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Abbreviation for information technology
equipment.
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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
changi ng the ci rcui try in a printed circ ui t
board.
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Abbreviation for kilo-, indicating 1,000.
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Abbreviation for kilobyte(s), 1,024 bytes.
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Abbreviation for kilobyte(s) per second.
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Abbreviation for kilobit(s), 1,024 bits.
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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 co mbinat ion.
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Abbreviation for kilogram(s), 1,000 grams.
N+]
Abbreviation for kilohe rtz, 1,000 hertz.
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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.
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Abbreviation for poun d(s ).
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Abbreviation for ligh t-em itti ng diode. An
electronic device that lights up when a
current is pass ed throu gh it.
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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 wi dth data pat h a s the computer’s
microprocessor.
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