Search found 762 matches

by Walter
Mon Nov 11, 2019 2:57 pm
Forum: Usage tips, tricks and problem reports
Topic: Bug when connecting the USB cable
Replies: 23
Views: 4028

Re: Bug when connecting the USB cable

Looking forward to my DM42 returning from Switzerland fully functioning. Quick service by SM. Highly appreciated! :D
by Walter
Mon Nov 11, 2019 1:46 pm
Forum: Discuss!
Topic: 43S Alternative key layout --> WP43C
Replies: 640
Views: 26292

Re: 43S Alternative key layout --> WP43C

Hi Jaco, much faster key response on the calculator (thanks to Dani) Can you tell me more about this? What exactly has Dani changed? ... So at this point he fixed what I broke. But we are checking more aspects and will try improving all. ... :lol: That's marketing, isn't it? Jaco, do you have relat...
by Walter
Sun Nov 10, 2019 11:01 am
Forum: Hardware issues
Topic: Display problems / broken?
Replies: 6
Views: 249

Re: Display problems / broken?

SeaTurtle22 wrote:
Sun Nov 10, 2019 6:47 am
DougWagner wrote:
Tue Nov 05, 2019 2:55 pm
Have you tried using a paper clip to perform a reset on the bottom of the case?
It beeps but the display does nothing
Just FYI, mine doesn't beep in resetting but it clears the screen ...

Perhaps there's a real HW problem. Did you look at the LCD connector? Maybe loose?
by Walter
Wed Nov 06, 2019 9:01 pm
Forum: Software Library
Topic: Pricing calculations
Replies: 11
Views: 457

Re: Pricing calculations

rprosperi wrote:
Wed Nov 06, 2019 2:49 pm
Wow, 25% Tax ?! I thought 8.125% where I live in NY was pretty high, holy smokes!
FYI, German VAT is 19%.
by Walter
Tue Nov 05, 2019 8:01 am
Forum: Discuss!
Topic: 43S News
Replies: 478
Views: 68025

Re: 43S News

There's fun work to do right now: Filling the catalog of functions and quickly sorting character strings, dealing with complex infinities and constants of various precisions, etc. ;) You can watch most of it on GitLab. 8-) And if you want, you can use our simulator for testing. Please look into the ...
by Walter
Mon Nov 04, 2019 11:06 am
Forum: Discuss!
Topic: Little Problem with Complex Mathematics on Calculators
Replies: 25
Views: 2885

Re: Little Problem with Complex Mathematics on Calculators

I was re-reading the article on the 71 Math ROM (worth to read - several times) in the HP Journal, Juy 1984, and found that the 71 Math ROM designers had this very problem with infinity and complex numbers, more than 35 years ago ! They solved it by ignoring the finite part when a infinity quantity...
by Walter
Sun Nov 03, 2019 10:27 pm
Forum: Discuss!
Topic: 43S Alternative key layout --> WP43C
Replies: 640
Views: 26292

Re: 43S Alternative key layout --> WP43C

The 43S selection buttons FIX/SCI/ENG/ALL already use a limited form of RadioButton (without the status feedback indication). If you call a quadruplet of softkeys RadioButton then you're right in principle BUT the status feedback is via the status bar on the 43S (remember the questions to Radio Jer...
by Walter
Sun Nov 03, 2019 5:04 pm
Forum: Discuss!
Topic: Cons (predominantly) and pros (if any) of agile development
Replies: 12
Views: 375

Re: Cons (predominantly) and pros (if any) of agile development

All I want to tell about this I've written elsewhere already: viewtopic.php?f=2&t=2216&start=610#p12352
by Walter
Sun Nov 03, 2019 4:56 pm
Forum: Discuss!
Topic: 43S Alternative key layout --> WP43C
Replies: 640
Views: 26292

Re: 43S Alternative key layout --> WP43C

As Thomas said, RadioButtons and CheckBoxes are not new. HP42S had it in 1988 and this 2004 article provides more detail: https://www.nngroup.com/articles/checkboxes-vs-radio-buttons/ . Interestingly, in this article, they mention the preference is to RadioButton above dropdown list, as all options...
by Walter
Sat Nov 02, 2019 9:16 pm
Forum: Discuss!
Topic: 43S Alternative key layout --> WP43C
Replies: 640
Views: 26292

Re: 43S Alternative key layout --> WP43C

Why don't you want to argue with me? I'm a definite friend of constructive discussions. 8-) In my book, those are not the same thing. BTW, so am I. :-) Sorry, I don't understand - especially the second sentence. :? BTW, we already deviate from the HP-42S paradigm by not using its system flags. I kn...