Search found 129 matches

by jthole
Fri Feb 02, 2024 2:26 pm
Forum: Discuss!
Topic: Vertical format alternative to DM16L
Replies: 9
Views: 2269

Re: Vertical format alternative to DM16L

Yes, plus a keyboard overlay.

Fortunately there are several alternative firmwares to choose from, all with their pros and cons. C47 and WP43 are both worth looking into, and I like the WP34S port to the DM42 hardware as well (that one also works great without an overlay).
by jthole
Tue Jan 30, 2024 5:26 pm
Forum: Discuss!
Topic: Got a HP-15C CE today
Replies: 7
Views: 2026

Re: Got a HP-15C CE today

I am too addicted to the program import and export functionality of (a.o.) the SwissMicros calculators. Otherwise the 15CE is a very nice package! Enjoy!

(I still have, and sometimes use, my old 11C).
by jthole
Tue Jan 30, 2024 8:12 am
Forum: DM42
Topic: Updates for DM42?
Replies: 18
Views: 2753

Re: Updates for DM42?

toml_12953 wrote:
Sun Jan 28, 2024 11:44 am
Ah. OK. I'd still like the USB3 speed when updating, though! :D
Even if it would be USB3, that would make no difference in the flash writing speed.
by jthole
Wed Jan 17, 2024 10:07 am
Forum: Hardware
Topic: Does DM41L have same capabilities as DM41x?
Replies: 26
Views: 2655

Re: Does DM41L have same capabilities as DM41x?

If we're talking wishes ... I somewhat wish SwissMicros would release a DM48 (Christophe de Dinechin is already laying excellent ground work for that, btw), and I really wish they would do a re-implementation of the HP 19Bii! (with business and trig functions, and of course the versatile solver, but...
by jthole
Tue Jan 02, 2024 11:30 pm
Forum: Other New DMCP Calculator Applications
Topic: DB48X preview release 0.5.0
Replies: 5
Views: 2274

Re: DB48X preview release 0.5.0

Done with 0.6.1. The approach is a bit different relative to the HP48: The ->HMS function creates a number with a 1_hms unit, which renders on screen using hours/minutes/seconds, and same with DMS for degrees. As a result, while HMS+ and HMS- exist and automatically add the unit if necessary, if yo...
by jthole
Tue Jan 02, 2024 10:59 pm
Forum: DM42
Topic: Precision of DM42
Replies: 7
Views: 1714

Re: Precision of DM42

That's impressive. Integrating on the DM42 (USB), with a specified accuracy of 10^{-8} , takes already close to 1 minute . I used, thanks to https://en.wikipedia.org/wiki/Euler%27s_constant gamma = - \int_0^1 log(log(1/x)) dx Of course I cheated as well, by using the Free42 app on my iPhone, and tha...
by jthole
Sat Dec 16, 2023 12:56 pm
Forum: DM41X
Topic: Sold: DM41X beta unit (s/n 00005)
Replies: 1
Views: 863

Re: For sale: DM41X beta unit (s/n 00005)

Sold (outside this forum)
by jthole
Fri Dec 15, 2023 9:53 am
Forum: DM41X
Topic: Recommended box for DM41X?
Replies: 24
Views: 5681

Re: Recommended box for DM41X?

Just a warning about phone cases; I had my HP 12C in one for several years, and always put it in my laptop bag with other stuff. It turned out that (probably due to an edge of the power supply pressing against the case) over time the keyboard was pushed in despite the protective case. Amazing; it st...
by jthole
Wed Dec 13, 2023 4:18 pm
Forum: Usage tips, tricks and problem reports
Topic: Cannot return to DM42 program after loading C47
Replies: 3
Views: 1017

Re: Cannot return to DM42 program after loading C47

Thanks! That worked!

(I almost see a second DM42 coming my way, to run C47 ;) ... unless I am ready to use it as my main calculator)
by jthole
Wed Dec 13, 2023 2:47 pm
Forum: Usage tips, tricks and problem reports
Topic: Cannot return to DM42 program after loading C47
Replies: 3
Views: 1017

Cannot return to DM42 program after loading C47

Hi all, After testing the DB48X and C47 programs, I would want to return back to the DM42 program for my day to day work. However, whenever I reset the calculator to the DMCP level, copy the DMCP_flash_3.24_DM42-3.22.bin file to the FAT disk, and restart the calculator, I get the message: QSPI NOT L...