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Trackball
Just like every component of the computer, everyone has an improvement,
addition, or change to make to a previous device. One day, someone came
up with the idea to flip the mouse over, and they called it a trackball.
A trackball allows for more detailed movement of the mouse pointer. The
mouse itself is motionless, but the motion comes from a giant ball in the
center that rotates by touch. The technology behind the ball is a pure
adoption of the opto-mechanical design. Trackballs have been modified into
many shapes and sizes and are rarely seen in the old "blocky" design.
On a personal note:
If you know someone who is physically impaired
in motor movements of the hands, and you would like them to be able to
use a computer. Try using a trackball. I have learned through personal
experience that the trackball allows the person to accommodate for their
individual problem.
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All material and images on these pages are copyright Joseph,Ed. This page was developed for the Thinkquest1999
competition.
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