bush_cheney2004 Posted August 28, 2009 Report Posted August 28, 2009 Drum roll please.....the Hewlett Packard HP-35 scientific calculator (from 1972) has been recognized by the IEEE. Before the development of the HP-35, contemporary calculators could only perform four basic functions – addition, subtraction, multiplication and division. The HP-35, named for its 35 keys, was the first handheld calculator to perform trigonometric, logarithmic, exponential and other transcendental functions. The now classic “Reverse Polish Notation” (RPN) first used in the HP-35 has become the most efficient way known to computer science for evaluating mathematical expressions. http://www.ieee.org/web/aboutus/news/2009/14april_1.html http://h20331.www2.hp.com/Hpsub/cache/4570...-0-225-121.html I couldn't afford one of these, and had to settle for an HP-25 in 1975. Rich folks could get the HP-65 or 67. Never used my Pickett slide rule again. Remember.....ENTER > = HP has reprised this legendary calculator as the HP-35s: http://www.engadget.com/2007/07/13/hp-cele...35s-calculator/ ....off to play "Lunar Lander". Quote Economics trumps Virtue.
DogOnPorch Posted August 28, 2009 Report Posted August 28, 2009 Hah...Lunar Lander. I think I still have mine in a box around here. Quote Nothing cracks a turtle like Leon Uris.
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