Description of Resource:
Popular PC writings have it that a trackball is nothing more than "an upside down" mouse. This is, however, quite inaccurate revisionist history and, if anything, a mouse is an upside down trackball since development of the trackball pre-dates early development of the mouse by about 11 years. The history of both pointing devices intertwines with the development of the modern graphical user interfaces (GUI) now standard on virtually all computers.
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