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  1. It directs the entire computer system to carry out stored program instructions.
  2. It must communicate with both the arithmetic logic unit (ALU) and the main memory.
  3. It instructs the ALU on arithmetic operations to be performed.
  4. It co-ordinates the activities of the other two units as well as all peripherals and auxiliary storage devices linked to the computer.
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βˆ™ 11y ago
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βˆ™ 12y ago

The control unit (often called a control system or central controller) manages the computer's various components; it reads and interprets (decodes) the program instructions, transforming them into a series of control signals which activate other parts of the computer. Control systems in advanced computers may change the order of some instructions so as to improve performance.

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Q: What are the tasks carried out by the control unit?
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