Search The Directory The Web for Home > Computers > Hardware > Calculators > RPN New! Submit a site   Categories: HP48 *(9)       whatUseek Collection Sites (submit a site ):   Give your site great placement in this category in as little as two business days!     whatUseek Directory Site Listings:   Eric Smith's HP Calculator Info - Technically page about older HP calculators with simulators for HP-41 and 45 calculators. With links to other calculator-related pages, journal articles, and US patents.   RPN Calculators - Calculators in Reverse Polish Notation, but with different approaches, different functions, different methods.   Reverse Polish Notation - describes RPN   User Friendly the Comic Strip - about RPN. A good way of explaining RPN with three picture frames. (Note: Erwin is an AI entity that frequently has been moved to different computers and his previous home was a Sun Workstation.) Help build the largest human-edited directory on the web.   Submit a Site - Open Directory Project - Become an Editor

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