Dear Members,
In this lesson we will increase your knowledge about the track ball and its uses....
SO FRIENDS LETS START OUR LESSON
- Track Ball:-
Trackball is a pointing device consisting of a ball held by a socket containing sensors to detect a rotation of a ball about two axes- like an upside down mouse with an exposed protruding ball.
The user rolls the ball with the thumb, fingers or a palm of the hand to move a cursor.
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