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How to Use RPN Calculators: Demonstrated With an HP 35s

Here's a quick RPN tutorial by example, with an HP 35s. Thanks for watching!

  • Directions Exclusive: CEO Keith Kaplan discusses 'All Things Drone'

    08/26/15 ,via DirectionsMag.com

    What is “disruptive technology”? When Hewlett-Packard introduced the HP-35 calculator in the early 1970's, it ushered in a new era of portable scientific calculating. The effect was far-reaching; it not only terminated production of most slide rule

  • Hacklet 70 – Calculator Projects

    08/14/15 ,via Hackaday

    We start with [Joey Shepard] and RPN Scientific Calculator. No equals sign needed here; [Joey] designed this calculator to work with Reverse Polish notation, just like many of HP's early machines. Stacks are pretty important for RPN calculators, and

  • Nothing like the HP RPN calculators

    05/12/15 ,via Science 2.0 (blog)

    To the left is my HP-15C, a scientific calculator which I have used continuously since the 80's. To the right is my HP-12C financial calculator that I recently purchased. It is also of 80's vintage. This calculator has been produced continuously from

  • iPhone And iPod Touch Get HP Scientific Calculator

    06/26/09 ,via UberGizmo (blog)

    Folks who owned the legendary HP 15C Scientific Calculator and the HP 12C Financial Calculator will now be able to enjoy them on the iPhone and iPod touch, and this time round you can also fool around with custom skins and programming. The only thing 

  • After Cuts, HP Labs Vows Return to Glory Days

    02/15/12 ,via Wired News

    Luckily, Bill Hewlett ignored the marketers, and the next year, the company introduced its HP-35 Scientific Calculator. The pocket calculator was a hit, eventually making slide rules obsolete. In 2009, it was honored by the Institute of Electrical and

  • Popular Science

    1974. 184 pages.

    Popular Science gives our readers the information and tools to improve their technology and their world. The core belief that Popular Science and our readers share: The future is going to be better, and science and technology are the driving forces that will help make it better.

  • HP-22S Scientific Calculator

    1988. 194 pages.

Featured Products


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HP 35S - 35S Programmable Scientific Calculator, 14-Digit LCD by HP

  • This product is by Generic



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HP 35s Scientific Calculator by HP

  • Built-in functions: Over 100, Memory registers: 800, Memory: 30...
  • SAT Reasoning Test; SAT Subject Tests in Mathematics Level 1 and...
  • Dimensions (W X D X H): 3.23 x 0.72 x 6.22 Inch. Warranty: 1 year...



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HP 12C Platinum Calculator by HP

  • Simple, easy-to-read 1-line-by-10-character display
  • Includes carrying case and long-life battery
  • Over 130 built-in business, financial, statistical, and math functions



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HP 10s+ Scientific Calculator by HP

  • Main Functions:Scientific for Math and Science School S,...
  • Display:10 Digits on 2 Lines, Type:Scientific, Power...
  • Brand:HP, Key Size:Regular


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HP Prime Graphing Calculator by HP

  • Prime Graphing Calculator