Wow, this is great.  Is the PCB sized to fit an original case?

Cheers,
-Neil.



On 9/16/2016 5:33 AM, Anthony Nixon wrote:
>   Hi all,
>
> Not sure if anyone is interested but I published the source code for
> the calculator emulator for the PIC16F1519 chip.
>
> It has the code to emulate the following HP calculators from the 70's era=
..
>
> HP21, HP22, HP25, HP27, HP29C, HP31E, HP32E, HP33E, HP37E, HP35, HP45,
> HP55, HP65, HP67, HP70, HP80
>
> www.teenix.org
>
> cheers
>
> Tony

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