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positive-going edge. The edge of a pulse or signal changing in a
positive direction. Synonymous with rising edge.
potentiometer. A variable resistor with three terminals, one at
each end and one on a slider (wiper).
power supply. A device that produces the power needed to
operate electronic equipment.
printed circuit. A pattern of conductors (corresponding to the
wiring of an electronic circuit) formed on a board of insulating
material.
printed-circuit board. A usually copper-clad plastic board used to
make a printed circuit.
priority. A rank assigned to a task that determines its precedence
in receiving system resources.
processing program. A program that performs such functions as
compiling, assembling, or translating for a particular programming
language.
processing unit. A functional unit that consists of one or more
processors and all or part of internal storage.
processor. (1) In a computer, a functional unit that interprets
and executes instructions. (2) A functional unit, a part of
another unit such as a terminal or a processing unit, that
interprets and executes instructions. (3) Deprecated term for
processing program. (4) See microprocessor.
program. ( 1) A series of actions designed to achieve a certain
result. (2) A series of instructions telling the computer how to
handle a problem or task. (3) To design, write, and test
computer programs.
programmable read-only memory (PROM). A read-only memory
that can be programmed by the user.
programming language. (1) An artificial language established for
expressing computer programs. (2) A set of characters and rules
with meanings assigned prior to their use, for writing computer
programs.
Glossary-27
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