The mouse was developed by researchers to make computers easier to use. Instead of forcing users to m emirs long lists of keyboard commands, they reasoned displaying a menu or list of commands on-screen would be easier. Mice are distinguished by the internal mechanism they use to generate their signal and by their means of connection with the computer. As you move the mouse, the ball rotates and optical sensors detect the motion. You can use a mechanical mouse on virtually any surface, although a mouse pad made of special fabric usually gives the best results.
Mechanical mice are prone to collect dirt within their internal mechanisms.
If too much debris accumulates, the pointer may behave erratically. You usually can clean a mechanical mouse. Turn the mouse over and rotate the ball-retainer ring so that it pops out, freeing the ball. Clean the ball and the ball rollers with a cotton swab moistened in rubbing alcohol. Blow dust out of the ball chamber and reassemble the mouse.