A HP calculator emulator (19/25/29/33/34/41/65/67/97...) was developed by Eric Smith between 1995 and 2011.

Then from 2018 articles on hackaday and videos on youtube present two calculators produced by Chris Chung: a NP-41 and a NP-25.

But since then... no news... neither from the emulator nor from the calculators !

I use the emulator and I ended up finding an NP-25 but the NP-41 remains nowhere to be found...