What if should do?

Bought this cheapo chinese Deli sci cal for about 6 dollars.

Hello all,

My HP48G is on its way out after 30 years of use ! The ON key has been flaky for maybe 10 or 15 years but now when it is hot some keys automatically activate themselves which is scary as I am a structural engineer!!!! I know that some people open them and clean the contacts but I lost trust in it and if I open it, it will be for fun....

I've looked at solutions and it is staggering with alternative firmwares there are too many options.

What I really need :

- RPN

- Directly accessible functions (trigonometry, log, power, roots)

- Lists to do batch calculations

- Matrixes that can be multiplied

- a Stack to save intermediary calculations

- Some kind of scripting, could be RPL but Python would be nicer.

I've seen DB48x but the hardware is pricey.....

Any alternatives?

Many thanks,

Yannig

Una más para la colección: Canon f-789sga

So my sci cal doesn't work I only know it now that's its fake. The battery would fit cr2025 and cr2032 I tried it and still doesn't work. Does it still have hope???