Readers with long memories will remember the days when mice and other similar pointing devices relied upon a hard rubber ball in contact ... to a pair of toothed-wheel rotation sensors.

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 ...

Kensington’s design shows a wireless trackball mouse with a large ball in the center that you can move to manipulate an ...

Evolution of computer mice from trackball to optical, translating hand movements into on-screen interactions with precision.

Since thumb-operated trackballs look and feel more like a traditional mouse, with a scroll wheel set between two top buttons, they’re easier to get the hang of. But their smaller ball requires ...

A mouse with a rubber or plastic wheel. When the wheel is moved on the scroll mouse, the content in the active application window scrolls up or down. Introduced in the mid-1990s, the scroll mouse ...