| Tracker Ball | ||
| A tracker ball is an
input device where a finger is used to rotate a ball. This moves a pointer
on the screen. (It is very like an upside-down mouse!)
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A tracker ball can be used on a GUI. | |
| You need less room to use a tracker ball than a mouse.
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| Exercise : Tracker Ball | ||
| A tracker ball is an
device where a user rotates a
on the top which, in turn, moves a
on the screen..
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| (Green indicates success) | ||
