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trackball
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   Also found in: Dictionary/thesaurus, Medical, Encyclopedia, Wikipedia 0.01 sec.

trackball

Input device that carries out the same function as a mouse, but remains stationary. In a trackball the ball controlling the cursor position is operated directly with the fingers.



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Viewing is managed by the track ball for navigation.
The best thing about the new Google Android range of smart phones is that the big screen and novel input devices, such as the touch screen, accelerometer, and track ball, open up a whole new world of mobile gaming.
There is also the laser mouse and a mouse with a track ball.
 
 
 
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