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Processor
A small CPU on one semiconductor chip. See also CPU.
RAM
Random Access Memory. The area of the computer's memory
used to run programs and store data while you work. All data
in RAM is erased when you turn off or reset the computer.
Real- time clock
A battery-powered clock inside the computer that tracks the
time and date, even when the computer is turned off.
Refresh rate
The frequency with which a monitor can redraw a screen
image. The faster the refresh rate, the less the screen will flicker.
Reset
To restart a computer without turning it off. You can reset your
computer by pressing Ctrl Alt Del. Resetting erases all data
stored in RAM and reloads the computer's operating system.
ROM
Read Only Memory. Memory that can only be read and cannot
be modified. ROM retains its contents even when you turn off
the computer by using power from a backup battery.
Serial
The type of communication that transmits data from a serial
interface to a serial device over a single wire. See also Parallel.
G l o s s a r y 7
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