The Excalibur application was designed to be a full featured RPN-only calculator. This is a serious calculator for serious users. Excalibur takes up a small amount of resources for all it does so well.

Here are some key features of "Excalibur":

· Powerful RPN entry. 300 Functions (scientific, business, conversion, computer science, physics, complex numbers, geometry, vectors, etc). Full 4 or 8-level stack.
· International support for different comma and decimal point formats. Programmable, macros, registers, custom button banks, etc.