Tracker Ball. This device is very similar to a mouse itself in terms of the functions that it performs but there is a difference in the physical appearance. An advantage of the tracker ball is that a...
Advantages: real 3D model that you can hold in your hand. and some actually have pi bonds and lone electron pair etc.Disadvantages: time consuming to build. lot's of parts. and since it's a 3D model...
Optical the Better Mouse.
The laser of the optical mouse may bounce off certain colors and shapes on a mouse pad.
There are no disadvantages to a optical mouse. The optical mouse just works better...
Tracker Ball:
A Trackerball is an Input Device.
A tracker ball is a pointing device; it is a mouse lying on its back. To move the pointer, you rotate the ball with your thumb, your fingers, or...