Processors

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CPU components

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Control Unit

ALU

Memory Unit

Data Bus

Address bus

Control bus

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Used to carry out the instructions received by the processor and produce the processed output. Carries out arithmetic instructions and logical instructions.

Carries the address of the memory location being read or written to. The wider this bus is, the larger the max amount of primary storage.

Manages execution of instructions by using signals sent to other parts of the computer. Synchronises instructions by using the in-built clock and controls the fetch-execute cycle.

Transmits control signals from the control unit to the rest of the processor. Allows synchronisation of the signals and commands.

Holds data and instructions for processing. Stores data currently in use, the boot program, operations and instructions.

Transmits control signals from the control unit to the rest of the processor. Allows synchronisation of signals and commands.


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