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program counter
<hardware> (PC, or "instruction address register") A
register in the central processing unit that contains the
addresss of the next instruction to be executed. The PC is
automatically incremented after each instruction is fetched to
point to the following instruction. It is not normally
manipulated like an ordinary register but instead, special
instructions are provided to alter the flow of control by
writing a new value to the PC, e.g. JUMP, CALL, RTS.
(1995-03-21)
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Nearby terms:
proglet « program « Program Composition Notation « program counter » Program Design Language » Program Evaluation and Review Technique » Program Information File
This article was derived from the Free Online Dictionary of Computers and is available under ther terms of the GNU Free Documentation License.
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