Personal Computer World 1997 August/Personal_Computer_World_Aug_97.iso/dxrs/gespcw08.dxr/00404_GESPointingdevicesnotebook-balls.txt

Text File | 1997-05-16 | 212 b | 1 lines

You use a tracker-ball to move the mouse pointer around the screen by rolling a ball around in its socket using your thumb. Tracker balls are available as an add-on for notebooks with no built-in pointing device.