TRURL: what changed
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| 1 | 1 | **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. | |
| 2 | 2 | ||
| 3 | 3 | TRURL is an acronym for "TRURL is a Reusable Universal RPN Library". | |
| 4 | 4 | ||
| 5 | 5 | ## Class libraries | |
| 6 | 6 | ||
| 7 | 7 | Currently, TRURL contains two independent class libraries: | |
| 8 | 8 | ||
| 9 | 9 | - RPN Engine: This is a full-featured calculation engine as a basis for Pascal-based RPN calculators | |
| 10 | 10 | - Segmitator: Library for virtual seven-segment displays (may be used independently of the RPN Engine) | |
| 11 | 11 | ||
| 12 | 12 | ## Calculators | |
| 13 | 13 | ||
| 14 | 14 | The following applications are available from the TRURL project: | |
| 15 | 15 | ||
| 16 | 16 | - TRURL A: Simple demo app for the RPN Engine | |
| 17 | 17 | - TRURL G: Desktop RPN calculator inspired by the user interface of the DSKY unit of the Apollo Guidance Computer (AGC) | |
| 18 | 18 | ||
| 19 | 19 | Additional calculators may be available from third parties | |
| 20 | 20 | ||
| 21 | 21 | ## Screenshots | |
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| 24 | 32 | ||
| 25 | 33 | ## External links | |
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| 27 | 35 | All software is available with a BSD license from [<http://trurl.sf.net>](http://trurl.sf.net). | |
| 28 | 36 | ||
| 29 | 37 | --- | |
| 30 | 38 | *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](/wiki-contact).* | |
| 31 | 39 | Category: FPC in Science and Technology | |
| 32 | 40 | Category: Software created with Lazarus | |
| 33 | 41 | Category: Software written in Free Pascal | |
| 34 | 42 | Category: TRURL |