If your pointing device is a mouse, turn it over. The chances are you’ll see a red LED light if you’re not seriously old-school and your mouse has a ball, this light serves as the illumination ...

Readers with long memories will remember the days when mice and other similar pointing devices relied upon a hard rubber ball in contact ... likely to rely upon an optical sensor taking the ...

the IntelliMouse Explorer was certainly the first that had an optical sensor instead of the normal embedded mouse ball that was made for a mass-market audience. Microsoft, of course, had been ...

A mouse that uses light to detect movement. Introduced in the late 1990s, optical mice superseded mechanical mice because their sealed bottom surfaces do not absorb dust and dirt. They work by ...