1. The typical pointing device is a track ball , which operates as follows. 2. But after this last drop, the track ball light does not work. 3. A sticky track ball made it difficult to maneuver the computer screen's pointer. 4. Track balls , which are essentially upside-down mice, seem to be growing in popularity.5. But this sensing technology will go way beyond replacing the track ball and mouse. 6. But they disagree on whether clickable mice or track balls are easier on the body. 7. But it will be easier to use a mouse than a track ball under such circumstances. 8. A common complaint about the arcade cabinet was that the track ball controls frequently broke from repeated use. 9. Atari assumed the track balls accounted for the poor reception and commissioned a second model with joystick controls. 10. Laptops come with three basic types of pointing devices : a track ball , a mini-joystick or a touch pad.
Mobile