I explain what RPN is, also known as Reverse Polish Notation. In essence, RPN is a very different notation for writing and solving equations. In the process I explain how it works, how it can be applied, and different examples of it. Some examples include the HP-12C calculator and GNU dc. 🖩 More info about RPN: https://leachlegacy.ece.gatech.edu/revpol/ More info about the HP-12C: https://www.hp-12c.com/arquivos/HP_full_guide.pdf Website: https://brycevandegrift.xyz/