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+--- Thread: Biorhythm using "Function" app (/thread-19810.html)
Biorhythm using "Function" app - Peter Heberer - 04-14-2023 08:29 PM
Hi there,
I got myself an HP Prime G2 only a few weeks ago.
I remembered the first program I would try to implement on any programmable calculator I could get my hands on, back in the day - the good old "Biorhythm" calculation.
After playing around with the calculator a bit I managed to use the "Function" app to do the plotting job for me.
So here it is (see attachment). [attachment=11972] (typo fixed)
EDIT: >> The code is actually a .TXT file, i forgot to rename it as i was using Notepad++ with the language definition for hpprgm files.
So simply open with a text editor copy and paste the code into the code editor of the HP Connectivity kit. << EDIT
Feel free to modify and/or improve. Send me a copy if you did so.
Enjoy!
Pete
RE: Biorhythm using "Function" app - Steve Simpkin - 04-15-2023 12:32 AM
On a slightly related note, a scanned article from a museum post by Bob Prosperi:
The June 1977 edition of Popular Electronics included an article "How to program calculators for fun and games" and includes 6 games for the HP-25, including Football, Spaceflight, Blackjack, Test your ESP, Battle Dive Bomber and Biorhythm forecast.
Here is a color scan of the complete article with listings, plus a few interesting ads for calculators in that same issue:
https://1drv.ms/b/s!AiI5Ei2M2Ja2mHMsEXfTUEZOz3Tk
The Biorhythm program section describes the theory of Biorhythms and also how to extend the date range of the calculation.
I suddenly feel the need to look for my puka shell necklace and mood ring...
RE: Biorhythm using "Function" app - Peter Heberer - 04-15-2023 02:42 AM
Haha, when I remembered that i was even tempted to buy myself this vintage Casio "Biolator" on eBay, but I realized it works only to a certain date which back then was thought of so far into the future we would never bother reaching it ...
Gosh.
I'm OLD.
:-(
RE: Biorhythm using "Function" app - Peter Heberer - 04-15-2023 03:02 AM
Please note my edition my original post, rename extension to ".txt" !
RE: Biorhythm using "Function" app - Peter Heberer - 05-03-2023 02:31 AM
Hi again,
new version 1.3.1 with minor addition - explicitly switch to "degrees" mode.
Changed file extension to ".hpppl.txt" to avoid confusion with programs in Prime's own format. File is a TEXT file, copy+paste into program editor.
Enjoy.