Glossary-6
overwrite
Storing information at a location where information is already stored, thus destroying the
original information.
parallel interface
Interface that communicates eight bits at a time.
parallel printer
A printer with a parallel interface.
parameter
A characteristic of a device or system.
password
A string of characters that the user must enter before the system allows access or system
privileges.
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 microprocessor 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.
RAM
Random Access Memory. A storage device into which data is entered and from which data
is retrieved in a nonsequential manner.
