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Program counter
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A program counter is a register that stores where a computer program is being executed by a processor. It is also commonly called the instruction pointer in Intel x86 and Itanium microprocessors, and
Front panel of an IBM 701 computer introduced in 1952. Lights in the middle display the contents of various registers. The instruction counter is at the lower left.
Front panel of an IBM 701 computer introduced in 1952. Lights in the middle display the contents of various registers. The instruction counter is at t
IBM 701
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The IBM 701 Electronic Data Processing Machine, known as the Defense Calculator while in development, was IBM's first commercial scientific computer and its first series production mainframe computer,
Program counter
…Front panel of an IBM 701 computer introduced in 1952. Lights in the middle display the contents of various registers. The instruction counter is at the lower left. A program…
IBM 701 processor frame, showing 1071 of the vacuum tubes
IBM 701 processor frame, showing 1071 of the vacuum tubes
Vacuum tube logic module from a 700 series IBM computer.
Vacuum tube logic module from a 700 series IBM computer.
Williams tube from an IBM 701 at the Computer History Museum
Williams tube from an IBM 701 at the Computer History Museum