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PC Cards
A credit card sized peripheral interface standard for port-
able devices. Types of PC cards (also known as PCMCIA
cards) currently offered by major vendors include
fax/modems, LAN, storage cards, and wireless communi-
cations devices.
peripheral
Input or output device not under direct computer control. A
printer is a peripheral device.
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
nonsequential manner.
read
To extract data from a storage device such as a diskette.
Glossary 9
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