Central Processing Unit

The Central Processing Unit (CPU) is what drives the fetch, execute, decode cycle. It consists of two principle parts: ?

• Datapath

  The datapath consists of an [[Arithmetic Logic Unit]] and [[Register|registers]] that are connected to each other, and to memory, by a **data bus**.

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• Control Unit

  The control unit sends timing and control signals to activate various components within the CPU to perform sequenced operations.

  A control unit determines what actions should be carried out according to the values in the [[Program Counter (register)|Program Counter]] and a [[Status (register)]].

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