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Processor board
A special, upgradable circuit board connected to the main
system board containing the microprocessor, cache memory,
and a socket for a math coprocessor.
Processor speed
See Operating speed.
RAM
Random Access Memory. The portion of the computer's
memory used to run programs and store data while you work.
All data stored in RAM is erased when you turn off or reset the
computer; so you must store all your data on disk.
Read/write head
The physical device inside a disk drive that reads data from
and records data on the magnetic surface of a disk.
Real- time clock
A battery-powered clock inside the computer that keeps track
of the time and date, even when the computer is turned off.
Reset
To reload a computer's operating system so you can retry a
task or begin using a different operating system. Resetting
erases all information in RAM.
RGB
Red Green Blue. A type of color monitor.
14
Glossary
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