RPN Calculators Hardware

RPN (an acronym for Reverse Polish Notation) is method of entering input in to a calculator without the use of parenthesis. Reverse Polish Notation is more appropriately referred to as Operator Postfix Notation. Many engineers use this form of inputing, for it is more logical and less key strokes to enter complex equations. This notation is found in many HP models.

• Eric Smith's HP Calculator Info - Technically page about older HP calculators with simulators for hardware HP-41 and 45 calculators. With links to other calculator-related pages, hardware journal articles, and US patents.
• User Friendly the Comic Strip - about RPN. A good way of explaining hardware RPN with three picture frames. (Note: hardware Erwin is an AI entity that frequently has hardware been moved to different computers and his previous hardware home was a Sun Workstation.)

   MySQL - Cache Direct