trackball
轨迹球,追踪球,跟踪球,轨道球
Definitions
- 1
- : a computer input device for controlling the pointer on a display screen by rotating a ball set inside a case.
Examples
From a vertical mouse to a trackball mouse and everywhere in between, we’ll break down some of the features of the best ergonomic mice on the market that will benefit any user’s well-being.
By entirely eliminating the need for wrist and arm movement on the desktop, the likelihood of developing or exacerbating wrist and arm problems through use of a trackball mouse is very low.
The best trackball mouse requires no wrist movement whatsoever, opting instead to allow users to control the cursor with minute movements of the fingers or thumbs by freely rolling the trackball in its place.
Users with arthritis may want to steer clear of trackballs, however, due to the demands they place on finger movement.
The trackball makes scrolling in all four directions a breeze, but since it demands so much thumb movement, users with arthritis or thumb problems may want to look elsewhere.