Search found 415 matches

by rudi
Fri Mar 22, 2024 3:38 pm
Forum: Software Library
Topic: Happy Pi Day!!!
Replies: 8
Views: 483

Re: Happy Pi Day!!!

Thanks! That’s more than enough entertainment for a Friday night.
Very nostalgic to re-read PPC magazines.
Already briefly scanned the Pi article, never heard about this method before, very clever.
by rudi
Fri Mar 22, 2024 5:29 am
Forum: Software Library
Topic: Happy Pi Day!!!
Replies: 8
Views: 483

Re: Happy Pi Day!!!

Greetings, By using pi_dec (a 396-step program for the HP 41) published on PPC Calculator Journal V7 N5 Page 9 June 1980, 'PI TO 1,110 PLACES' by Ron Knapp, based on Machin's formula pi=16 arctan (1/5) - 4 arctan(1/239), I was able to get as a test 1,590 exact decimals of PI in 2 minutes and 12 sec...
by rudi
Thu Mar 14, 2024 6:11 pm
Forum: Software Library
Topic: Happy Pi Day!!!
Replies: 8
Views: 483

Re: Happy Pi Day!!!

Nice one Jaymos! I made a C program, that also implements Leibniz series. A bit faster than the DM42, running this on my Lenovo X1: https://www.dropbox.com/scl/fi/c1wx7j5x2jhco53tkmkw2/C_program_output.jpg?rlkey=n25hndlo1xuccgclsrihv4a3j&raw=1 Reaching the 13 correct digits in 1 000 000 000 000 ...
by rudi
Thu Mar 14, 2024 8:47 am
Forum: Software Library
Topic: Happy Pi Day!!!
Replies: 8
Views: 483

Happy Pi Day!!!

Implementation of Liebniz pi series: https://en.wikipedia.org/wiki/Leibniz_formula_for_%CF%80 https://www.dropbox.com/scl/fi/r74wbx1fuitgi53u34rtd/LeibnizPi.png?rlkey=xo9cxk1sp1k4wznyqsu0k7xna&raw=1 https://youtu.be/tJfCA__biiU Pi at work today ;-) Result after having run approximately for half ...
by rudi
Thu Mar 07, 2024 7:42 am
Forum: Hardware issues
Topic: DM42 dead after a long weekend
Replies: 9
Views: 2683

Re: DM42 dead after a long weekend

My DM42 also auto reset the other day, when I had it with me in my coat pocket. It wasn’t freezing, just down to ca 5°C. Could be the battery, that couldn’t cope with the low temperatures, but it is only a couple of months old. Can’t find any specs for the devices operating temperature range on SM w...
by rudi
Thu Feb 29, 2024 5:53 am
Forum: C47/C43, WP43, WP34S
Topic: C47 bezel available
Replies: 63
Views: 12694

Re: C47 bezel available

Edit: this might help illustrate: a bar chart is a set of shapes with areas, but it's not confusing because the bars are all the same width. If the bars were different widths, we'd be in trouble. Here's an example of a pie chart that isn't distorted. :-) https://xkcd.com/688/ :lol: nice one
by rudi
Mon Feb 26, 2024 11:33 am
Forum: C47/C43, WP43, WP34S
Topic: C47 bezel available
Replies: 63
Views: 12694

Re: C47 bezel available

Interesting graph. Thanks for sharing.
by rudi
Fri Feb 23, 2024 6:15 am
Forum: Software Library
Topic: Unit conversion dBm to dBuV and Vrms and vice versa
Replies: 4
Views: 2776

Re: Unit conversion dBm to dBuV and Vrms and vice versa

Nice program - it is exactly for small tasks like this in our daily lifes, that the DM42 comes in handy!
by rudi
Sun Feb 18, 2024 3:29 pm
Forum: DM42
Topic: Can we please have a DM42 firmware update...
Replies: 6
Views: 829

Re: Can we please have a DM42 firmware update...

Way, that was quick Bob.
Thanks a lot. I owe you, should we meet 🍺
by rudi
Sat Feb 17, 2024 10:30 pm
Forum: DM42
Topic: Can we please have a DM42 firmware update...
Replies: 6
Views: 829

Re: Can we please have a DM42 firmware update...

On my device version 3.22/3.0.15b the bug persists.