Answers (2)
The trackball, a related pointing device, was invented by Tom Cranston, Fred Longstaff and Kenyon Taylor working on the Royal Canadian Navy's DATAR project in 1952. It used a standard Canadian five-pin bowling ball. It was not patented, as it was a secret military project. a link to the wiki is
http://en.wikipedia.org/wiki/Mouse_(computing)
i personaly have contrubuted to this wiki and will stand by its validity.
