Dell OptiPlex GX240 User Manual
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Boot Sequence
Allows you to specify the order of the devices from which the system attempts
to boot.
bps
Bits
per second. A measurement of data transmission speed.
Bps
Bytes
per second. A measurement of data transmission speed.
BTU
British Thermal Unit. A measurement of thermal energy that equals
approximately 1055 joules (or 1055 watt-seconds), or the amount of thermal
energy necessary to raise the temperature of one pound of pure liquid water
by one degree
F
at the temperature at which water has its greatest density
(39 °F).
Bus
An electronic pathway that links computer components such as the
microprocessor
,
RAM
,
expansion cards
, and so on. The “width” of a bus
indicates the amount of data that can move along the bus and is determined
by the number of parallel conductors in the bus. For example, a 32-bit bus
has 32 conductors and can move 32
bits
of data at once.
Bus Speed
The speed, given in
MHz
, that indicates how fast a
bus
can transfer
information. For example,
PCI
bus speeds are 33 or 66 MHz, and the
AGP
bus speed is 66 MHz. Intel Pentium®
microprocessors
have bus speeds of 66
or 100 MHz. The microprocessor operating speed is determined by a
combination of the bus speed and multiplier; for example, 100 MHz bus speed
x 4.5 multiplier = 450 MHz microprocessor speed.
Byte
A measurement of data storage that equals eight contiguous
bits
of
information.
C
Celsius. A measurement of temperature that equals the conversion formula
(Tf - 32) * (5 / 9), where Tf equals temperature in
F
.
Cache
An area of high-speed
RAM
set aside to store frequently accessed data. When
data is accessed, a copy is stored in cache memory. The next time the
microprocessor
looks for information, it first checks the cache. If the data is