Difference between revisions of "Program Counter"
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Revision as of 16:29, 19 December 2016
A program counter (PC, or sometimes instruction counter) is a register in the CPU of a computer which indicates where, in the execution of the program in main memory, the CPU is. The PC is usually updated automatically during the execution of each instruction to point to the next instruction. If the instruction is a jump, that updating is usually replaced by loading the target of the jump into the PC.
