- noun a register in a CPU that contains an instruction during decoding and execution operations
- noun a register in a CPU that contains the location of the next instruction to be processed.
- In a CPU, a register that contains the address of the location in memory that is to be accessed by the next instruction. May also refer to the address of the current instruction. Also called by various other names, including program counter, control register, instruction register, and sequence register.
- synonymprogram counter