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Fun Fact June 23, 2020.

23 June 2020

Would you ever hold a mouse in your hand?  I bet you have, especially if you have ever used a computer.  The computer mouse was first demonstrated to the public in 1967.  It got it’s name because of it’s shape and the long cord that connects it to your computer.  The trackball, a related pointing device, was invented in 1946 by Ralph Benjamin as part of a post-World War II-era fire-control radar plotting system called Comprehensive Display System. Benjamin was then working for the British Royal Navy Scientific Service. Benjamin’s project used analog computers to calculate the future position of target aircraft based on several initial input points provided by a user with a joystick. Benjamin felt that a more elegant input device was needed and invented what they called a “roller ball” for this purpose.  The device was patented in 1947, but only a prototype using a metal ball rolling on two rubber-coated wheels was ever built, and the device was kept as a military secret.