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pixels
Picture elements. Tiny dots that make up a screen image.
port
Provides the means for an interface between the microproc-
essor and external devices. A cable connector is usually
plugged into the port to attach the device to the computer.
processor
In a computer, a functional unit that interprets and executes
instructions.
prompt
A special symbol indicating the beginning of an input line.
Also a message that appears on the screen indicating that
the user must take a certain action.
R
RAM
Random Access Memory. A storage device into which data
is entered and from which data is retrieved in a nonsequen-
tial manner.
read
To extract data from a storage device such as a diskette.
ROM
Read-Only Memory. Memory in which stored data cannot
be modified by the user except under special conditions.
reset
The process of returning a device to zero or to an initial or
arbitrarily selected condition.
Glossary-7
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