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1 definition found
 for program counter
From The Free On-line Dictionary of Computing (30 December 2018) :

  program counter
      (PC) A register in the central processing unit
     that contains the addresss of the next instruction to be
     executed.  After each instruction is fetched, the PC is
     automatically incremented 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.
     IBM call it the Instruction Address Register.

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