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C47 / R47 Calculator
C47 RPN Calculator - Project Site
R47 - A beginner's journey
Museum of HP Calculators - HP-41 Software Archive
HP Calc.org - HP Calc Software Repository
Thierry's HP Corner - Repairs and Parts
HP 48 RPN Calculator - FAQ
Using the Free42 Simulator (video)
Fos1's C47 / R47 Easy Guide (WIP)
Page last modified on January 01, 2026, at 09:10 am
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