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    Question

    Which of the following looks like an upside-down mouse

    that requires the ball to be rotated manually with a finger for moving the cursor on the computer screen?
    A Trackball Correct Answer Incorrect Answer
    B Digitiser Correct Answer Incorrect Answer
    C Light pen Correct Answer Incorrect Answer
    D Joystick Correct Answer Incorrect Answer

    Solution

    The correct answer is A

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