What is a trackball?

A trackball is a specific style of computer mouse that allows the user to keep their hand and arm in one place, while manipulating a ball that moves the on-screen pointer. The computer mouse is a critical element to any home or office PC (personal computer) set up. The mouse provides the user a way to move the pointer on the computer screen to the desired location, as well as the means to select an object. Used in all applications from office software to gaming and web surfing, mouse comfort and ease of use is paramount. The traditional computer mouse has been a “point and click” tool, where the user physically moves the mouse across a mouse pad, desktop, or other surface with either left or right hand until the pointer (or cursor) is at the correct position on the screen. Once there, the user clicks either the right button or the left button to select the location and place the cursor. This type of navigation requires arm and wrist movement, and the location of the mouse assembly is ...  more

A trackball is an input device which contains a visible sphere mounted in a stationary container. It functions similarly to a mouse, however, the sphere is rotated with the fingers to move the cursor to any position on the screen.  more