Dell OptiPlex GX240 User Manual page 275

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
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