tracker ball การใช้

Marcia tries to find him through her magic and even enlists Simon's help through his tracker ball, Sleuth.
Large and well made ones allow easier high precision work, for which reason they may still be used in these applications ( where they are often called " tracker balls " ) and in computer-aided design.
The series of toys go by the name Zoam Light Tracker balls, and they have footballs ( some with the little fins on one end that make perfect spirals easy to throw ), basketballs, soccer balls, super bouncy balls and a flying disc.
This included patenting the use of an interlaced cursor controlled by a tracker ball to link displays to stored digital information, the first ever digital compression of video data, and the creation of the navy s first digital data link and network which is still in use NATO-wide as " Link 11 ".