Dell OptiPlex GX240 User Manual
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there, the microprocessor retrieves it from the much-faster cache memory.
Drive caching and RAM caching significantly improve the overall speed of
the computer. See also
.
CD
Compact disc. An optical form of storage media, typically used for audio and
application programs.
CD-R
CD recordable. A recordable version of a
. Data can be recorded only once
onto a CD-R. Once recorded, the data cannot be erased or written over.
CD-RW
CD rewritable. A rewritable version of a
. Data can be written to a CD-
RW, then erased and written over (rewritten).
Chip
See
.
CIM
Common Information Model. CIM allows remote management application
programs to access system management information on a client computer
running any Microsoft Windows
®
core
components.
Clock Speed
, that indicates how fast computer components
operate that are connected to the system
. The speed is generated by a
quartz crystal on the system board that acts as a kind of metronome.
Components that are synchronized with the clock speed can run faster or
slower, but their speed is determined by multiplying or dividing a factor by
the clock speed.
cm
Centimeter(s). A measurement of length equal to 0.39 inch.
CMOS
Complementary metal-oxide semiconductor. Memory
that are often used
for
storage.
COA
Certificate of Authenticity. The Microsoft Windows COA is a 25-digit alpha-
numeric code located on a sticker on your computer. You need the COA to