08-24-2008, 01:57 AM
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Join Date: Oct 2006
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Information about computer mice.
Computer mouse help and information
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The optical mechanical mouse's operation is fairly simple. As you can see in the below illustration, the mouse movement is tracked by four parts. As the mouse is moved, the ball rolls in the direction of the movement which, in turn, moves the roller (X or Y axis). As the roller begins to rotate, so does the chopper / gear. The gear has small notches within it or around the edges of it; as it rotates, light shines through the openings which is then detected by the two light sensors which then sends the computer a signal of that movement. The offset of the light received by the two light sensors determines the direction of each axis.
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