OpenRPNCalc: Custom scientific RPN calculator based on STM32

https://www.electronics-lab.com/openrpncalc-custom-scientific-rpn-calculator-based-on-stm32/

Reverse Polish Notation (RPN) is a popular method for representing mathematical expressions. In this notation, the operator symbol comes after the operands in contrast to the Polish notation, where the operators are placed preceding the operands. For example, the Polish notation for the addition of 2 and 5 is 2+5, while in reverse Polish notation, […]