Multiple choice

How many rollers are actually responsible for movement of the cursor in mouse?

  1. One

  2. Two

  3. Three

  4. Depends from mouse to mouse
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Traditional mechanical computer mice use TWO rollers to track movement - one for the X-axis (horizontal) and one for the Y-axis (vertical). These rollers detect the ball's rotation and convert it into digital signals that determine cursor position. Optical and laser mice eliminated this mechanical system entirely.

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