HP15c CE: 8x8 equation system

[Steve Simpkin]

(05-12-2023 11:50 PM)johanw Wrote:  I have not yet tried it, but I assume the DM15 with the M1B firmware should also be able to do this?

The DM15 is about the same price as the 15C CE but I'm not sure if I can justify the purchase of another calculator that does the same as one that I already have.

I think the biggest advantage of the DM15L over the HP-15C CE is the ability to connect to a computer via USB. This can be used to backup/restore the calculator and also for HP-15C program development when used in conjunction with Torsten Manz's HP-15C simulator for Windows/Mac/Linux). Having the ability to write programs with documentation and simulate/debug them on the computer before downloading them to the DM15L seems like a massive feature *if* you write a lot of HP-15C programs.
https://hp-15c.homepage.t-online.de/homepage.htm

I think the biggest advantage of the HP-15C CE will be its keyboard quality and feel.

Disclaimer: I own neither of these devices.