Parallel
An interface that transmits data simultaneously over separate wires in a cable. See also Interface and Serial.
Parameter
A qualifier added to a command that tells your operating system what data to process, where it should locate or store a file, or how it should operate. See also Switch.
Pathname
The directory name(s) you specify to locate a file. For example, the pathname for the file SALES, stored in the subdirectory BUSINESS, is \BUSLNESS\SALES.
Peripheral device
An external device (such as a printer or a modem) connected to a computer that depends on the computer for its operation.
Port
A physical socket on a computer to which you can connect a peripheral device.
Tests stored in a computer’s ROM that the computer runs to check its internal circuitry, peripheral device configuration, and operating status each time you turn it on or reset it.
Processor speed
See Operating speed.
Glossary 11