The trackball was invented as part of a post-World War II-era radar plotting system named Comprehensive Display System (CDS) by Ralph Benjamin when working for the British Royal Navy Scientific Service. ... DATAR's trackball used four disks to pick up motion, two each for the X and Y directions.
The trackball was invented as part of a post-World War II-era radar plotting system named Comprehensive Display System (CDS) by Ralph Benjamin when working for the British Royal Navy Scientific Service. ... DATAR's trackball used four disks to pick up motion, two each for the X and Y directions.
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