Search found 7 matches

by Weegie
Fri Jun 25, 2021 11:01 am
Forum: OFFIMG library
Topic: Nice CCD image from the old ROM manual
Replies: 2
Views: 460

Re: Nice CCD image from the old ROM manual

Loving it many thanks
by Weegie
Thu Jun 24, 2021 2:50 pm
Forum: Discuss!
Topic: Can the DM41X DM42 Screen Get Image Burn?
Replies: 2
Views: 420

Can the DM41X DM42 Screen Get Image Burn?

Probably a silly question but thought I'd ask The standard OFF state cycles a series of images. I prefer just to have one image (or perhaps none if necessary) and it ocurred to me that pehaps it could burn a ghost image into the screen over time. I know that this isn't really so much of a problem th...
by Weegie
Tue Jun 22, 2021 10:48 am
Forum: Software issues
Topic: Calc freezes when removing USB cable
Replies: 1
Views: 973

Re: Calc freezes when removing USB cable

Funny I had a similar thing, not being blessed with the ravages of intelligence, I forgot all about the reset button. Opened the calc and removed the battery :oops: There then followed some anxious moments as I had to reformat the FAT and then restore from a backup. That didn't work initially as I f...
by Weegie
Wed Jun 16, 2021 9:54 pm
Forum: DM41X
Topic: Negative Cube Roots
Replies: 5
Views: 491

Re: Negative Cube Roots

Wow Dan

I just opened that zip, that contains a lot of modules.

Thankyou for the link to both the mod files and the documentation, I'm still trying to find my way around

The help is very much appreciated

John
by Weegie
Wed Jun 16, 2021 5:36 pm
Forum: DM41X
Topic: Negative Cube Roots
Replies: 5
Views: 491

Re: Negative Cube Roots

Thanks for explaining, appreciated So finding negative roots isn't possible with the 41. On the video I tried the test on a 48GX using the "raise to a power" to find the cube root and it returned the same answer as the DM42, but using the root finder on the 48GX returned -2. Don't know if ...
by Weegie
Wed Jun 16, 2021 11:36 am
Forum: DM41X
Topic: Negative Cube Roots
Replies: 5
Views: 491

Re: Negative Cube Roots

Just as I posted this it struck me if the DATA ERROR is related to the 41 not natively handling complex numbers (or I don't think it can without programming). Perhaps it sees the first root as complex and can't return the value.

Of course I could be talking complete rubbish :?
by Weegie
Wed Jun 16, 2021 11:11 am
Forum: DM41X
Topic: Negative Cube Roots
Replies: 5
Views: 491

Negative Cube Roots

First post here and only had my DM41X a week or so. Many years ago I used the HP41C in my latter college years and with my first "professional" (although I've never considered myself a professional anything). The screen eventually gave up, I really missed that calculator. Loving the DM41 w...