RPN. Reverse Polish Notation
Look up at http://en.wikipedia.org/wiki/Reverse_Polish_notation
Then red the manual for the hp48gx at http://www.hpcalc.org
As a correction to my lose last answer.
Look up at http://en.wikipedia.org/wiki/Reverse_Polish_notation
Then red the manual for the hp48gx at http://www.hpcalc.org
As a correction to my lose last answer.