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Re: HP41 display for DM41?

Posted: Sat Feb 03, 2018 8:56 pm
by Walter
Walter wrote:
Fri Jan 26, 2018 10:47 am
IIUYC, then you want an outdated display for nostalgic reasons, don't you? If I'd be a company, I'd let engineering estimate the coarse costs to fulfil your wish, multiply by pi, and offer you that price.
CarlRav wrote:
Sat Feb 03, 2018 3:16 pm
Why not? Would that require too much work or is it simply impossible from the technical standpoint?
As Massimo showed, it's possible. :) I just think it would be a massive step back compared to the opportunities modern dot matrix LCDs offer. A step back causing much work (HW- and SW-wise) and no benefit beyond curassing nostalgia. :roll: If somebody would force me doing something like that, I'd let him pay for it. 8-) YMMV of course.

Re: HP41 display for DM41?

Posted: Thu Sep 08, 2022 2:13 pm
by Keemani 09
Yes you are right, old is gold. :D

Re: HP41 display for DM41?

Posted: Thu Sep 08, 2022 3:36 pm
by toml_12953
Walter wrote:
Fri Jan 26, 2018 10:47 am
IIUYC, then you want an outdated display for nostalgic reasons, don't you? If I'd be a company, I'd let engineering estimate the coarse costs to fulfil your wish, multiply by pi, and offer you that price.
And I'd pay it gladly! Many people (you included) seem to underestimate the power nostalgia has. If someone created an HP 9100b using modern circuitry but had the same desktop form factor, could read and write the same mag cards and display the same green characters as the original, they'd make a small fortune! The key is having it look and operate exactly the same as the original experience. This is why, although I own one, I don't use the SM version of the 41CX very often. The big attraction would be if it could use the original HP peripherals.

Re: HP41 display for DM41?

Posted: Thu Sep 08, 2022 4:48 pm
by ctrclckws
Nostalgia, and old is gold!

HP seems to have understood that for the HP-12C.
A user can pick up any generation of the 12C and know what to expect.

The newer versions are SO much faster than the originals, though.

There is a program from Katie Wassermann to calculate 70 digits of Pi on the 12C.
80's era takes about 90 minues.
2018 China, takes about 50 seconds.

2019 and 2021 with different firmware, both get Error 0.

Amazing.

Re: HP41 display for DM41?

Posted: Fri Sep 09, 2022 9:50 am
by redglyph
Well, anyone buying a DM41L is bound to do it by nostalgia. ;) There are much more modern, powerful and convenient calculators available these days. Although removing the HP-50g was a mistake, the Prime is just not reliable enough to replace it and it's a student-oriented calculator.

So it may as well feature the segment display, but making a custom 12-digit 14-segment display must be much more difficult to handle in a project than using an existing matrix one. So I think it's not just a cost concern (even though it's likely much more expensive).

But I think the font of the DM41X is not too far off?