Mechanical mouse

A mechanical mouse is a computer mouse containing a metal or rubber ball on its under side. When the ball is rolled in any direction, sensors inside the mouse detect the motion and move the on-screen mouse pointer accordingly. The picture shows the bottom of a mechanical mouse with the ball removed. Today, this mouse has been replaced by the optical mouse. A mechanical mouse is susceptible to dust particles and other debris getting on the ball and preventing the mouse from working.

Ball, Cursor, Mouse mat, Mouse terms, Optical mouse, Optomechanical mouse, Scroll