A suite of RPN calculators and a class library for Object Pascal
TRURL is a suite of desktop calculators with reverse Polish notation (RPN) written in Object Pascal. Additionally, it comes with a free reusable class library (RPN Engine) as a toolbox for creating your own calculator.
TRURL is an acronym for "TRURL is a Reusable Universal RPN Library".
Class Libraries:
• RPN Engine: Full-featured calculation engine for Pascal-based RPN calculators
• Segmitator: Library for virtual seven-segment displays
Applications:
• TRURL A: Simple demo app...
A functional HP-style command-line RPN scientific calculator
HPN is a functional - as opposed to microcode - cross-platform emulation of a classic 1970s Hewlett-Packard scientific calculator for any command-line interface. Its operations completely model the historical and groundbreaking HP-35 series, and functions to support the HP-45 and the later HP-65, 67 and HP-15C are in the pipeline.