History
In 1984, Ted Selker, a researcher at PARC, worked on a pointing stick based on a study that a typist needs a relatively long 0.75 sec to shift the hand from the keyboard to the mouse, and comparable time to shift back. Selker built a model of a device that would minimize this time. It was only three years later, working at IBM, that Selker refined his design, resulting in the TrackPoint product on which IBM received US patents in 1996.
Read more about this topic: Pointing Stick
Famous quotes containing the word history:
“... that there is no other way,
That the history of creation proceeds according to
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Do get done in this way, but never the things
We set out to accomplish and wanted so desperately
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—John Ashbery (b. 1927)
“Philosophy of science without history of science is empty; history of science without philosophy of science is blind.”
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—Erma Brombeck (20th century)