An optical mouse uses

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     a rollerball that sits on top or on the side of the mouse and that you move with your fingers.
     a trackpoint device.
     an internal sensor or laser to detect the mouses movement..
     a rollerball on the bottom that moves when you drag the mouse across the mousepad.
asked May 25, 2013 in Computer Science by anonymous
    

1 Answer

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an internal sensor or laser to detect the mouses movement..
answered May 26, 2013 by CS ~Top Expert~ (7,590 points)

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