geekfact

Geek Fact for November 22nd

In 1904
, the first U.S. direct current, electric motor patent was issued to Mathias Pfatischer. Alternating current (AC) machines largely replaced DC machines in most applications following the invention of the induction motor. Learn more at http://ecmweb.com/archive/direct-current-motor-basics.

Geek Fact for November 17th

In 1970, Douglas Engelbart received a patent for the first computer mouse. The patent, titled “X-Y Position Indicator for a Display System,” is for a simple hollowed-out wooden block with a single push button on top. Learn more at http://inventors.about.com/library/weekly/aa081898.htm.

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