HP-15C for Windows, Linux and Mac OS X


I released version 2.0.00 of my HP-15C simulator. It can be downloaded from the simulator home page.

This version now supports Windows 2000, XP, Vista and 7, Linux x86 and - for the first time - Mac OS X (x86).

Mobile operating systems, like PocketPC, Windows Mobile or Android, are not supported.




The HP-15C was my first HP calculator. I still have it plus two more, including one of the last units made (1989).

Quoting from your website:

The Simulator uses the Simpson method to compute an integral. Unfortunately, I do not know which method the HP-15C uses (the handbook does not say a word about it).

I do not know which method the real HP-15C uses to find the roots of an equation. The Simulator uses the "Regula Falsi" method.

The HP-15C, like its predecessor HP-34C, uses a Romberg method. Perhaps the author of both SOLVER and INTEGRATE algorithms, Prof. Kahan, can give more detailed explanations:





Edited: 29 Aug 2010, 7:40 p.m.


Yes, the 34C and the 15C use Romberg's method.

Regarding contacting professor Kahan, I did a few years ago to ask about details for the SOLVER. He wrote back and said that he had a master's student work on the details of implementing the algorithm and he (Kahan) did not have any info.


Edited: 29 Aug 2010, 10:40 p.m.



l meant (or intended to mean) Prof. Kahan's articles would give more information. I should have revised my post. Sorry!


Edited: 30 Aug 2010, 12:31 a.m.

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