TRURL

TRURL is a class library for Object Pascal supporting the creation of virtual calculators with reverse Polish notation (RPN). It comes with demo projects and several ready-to-use calculators for macOS, Linux and Windows.

TRURL is an acronym for "TRURL is a Reusable Universal RPN Library".

Class libraries

Currently, TRURL contains two independent class libraries:

• RPN Engine: This is a full-featured calculation engine as a basis for Pascal-based RPN calculators
• Segmitator: Library for virtual seven-segment displays (may be used independently of the RPN Engine)

Calculators

The following applications are available from the TRURL project:

• TRURL A: Simple demo app for the RPN Engine
• TRURL G: Desktop RPN calculator inspired by the user interface of the DSKY unit of the Apollo Guidance Computer (AGC)

Additional calculators may be available from third parties

Screenshots

File:TRURL G with sourcecode.jpeg File:TRURL A 1.0 on macOS Mojave.png File:TRURL G 1.0 on macOS Mojave.png File:TRURL G 1.0 on Windows 7.png File:segmitator-demo.png

External links

All software is available with a BSD license from http://trurl.sf.net.

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From the Free Pascal wiki, page "TRURL", as it stood on 2021-09-22 after a change by Jwdietrich, out of the wiki's dump of 2024-05-26. Copyright stays with the author who wrote it, according to the old wiki's Licensing page. If you have concerns about this material, message the admin.