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8 Dell Precision 610 Mini Tower Systems User’s Guide
most users prefer noninterlaced video
adapter resolutions.
An instruction and data cache built in to
the processor. The Intel Pentium proces-
sor 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.
Acronym for internetwork packet
exchange.
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 processor. Each periph-
eral 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.
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.
Abbreviation for information technology
equipment.
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.
Abbreviation for kilobyte(s) per second.
Abbreviation for kilobit(s), 1,024 bits.
Abbreviation for kilobit(s) per second.
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.
Abbreviation for kilogram(s), 1,000 grams.
Abbreviation for kilohertz, 1,000 hertz.
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.
Abbreviation for pound(s).
Abbreviation for light-emitting diode. An
electronic device that lights up when a
current is passed through it.
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
processor.
The device names for the first through
third parallel printer ports on your comput-
er are LPT1, LPT2, and LPT3.