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    Question

    Which of the following are peripheral devices of a

    computer? 1. Plotter 2. Control unit 3. Scanner 4. ALU
    A 1 and 2 Correct Answer Incorrect Answer
    B 1 and 3 Correct Answer Incorrect Answer
    C 2 and 3 Correct Answer Incorrect Answer
    D 3 and 4 Correct Answer Incorrect Answer

    Solution

    Peripheral devices are those devices that are linked either internally or externally to a computer. They are used to transfer data. Plotter and Scanner are peripheral devices. The Control unit and ALU are internal components of the computer.

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