Multiple choice technology architecture

Which of the following laptop or notebook pointing devices looks like an opto-mechanical mouse turned upside down?

  1. Mouse

  2. TrackBall

  3. Touch Screen

  4. Drawing Tablet
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

A trackball uses the same mechanical detection principle as an opto-mechanical mouse but inverted - instead of moving the mouse across a surface, you rotate the ball directly with your fingers or thumb. The stationary ball housing contains the same optical/mechanical sensors as a mouse.

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