![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj-bg9-WqhsMsg4OmayfgjELD13n9ElQf_6a_yOCFTC1GceuwxgKx73d5YFa64LpOTbUGOcIfiCZn41sW3ZOUNkT7q7FmjSqdTB-8dhyWrFnF4MpMRhiD1b2H2XLzH0s_GjgFO-RrBH5s4/s320/Trackball.jpg)
A trackball is a pointing device, which is similar to a mouse.To moving the graphics cursor around the screen, the ball is rolled with the figure .because the whole device is not moved for moving the graphics cursor,a track ball requires less space than a mouse for operation.A trackball comes in various shapes and forms with the same functionality.
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