Once upon a time there was a pocket calculator called the HP15C. It used a system called Reverse Polish Notation (RPN) for doing its calculations. The Fairwood Calculator is a RPN calculator designed for the computer.
very nice, modern and simple rpn calculator. for those small calculations inbetween..
Ein super guter Rechner für Programmierer die UPN (Umgekehrte Polnische Notation) lieben
Simply. It works well. I would prefer square buttons or a scalable layout so that I can use it better with my touchscreen netbook or tablet (or phone). With the notable exception of some stack functions such as swap,roll, and sto(re) it has what you need.