【實用生產應用app】RPN calculator|最夯免費app-綠色工廠好玩App

RPN is a four function calculator designed to replace the standard Android calculator. It features large buttons designed for easy touchscreen use. It operates using Reverse Polish Notation, uses high accuracy decimal arithmetic internally, and has a fixed point scrollable display.

The code is open source and available at https://github.com/lpar/RPN

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