Casio fx-3600PV/PA root finder

[Hlib]

I bought a casio fx-3600pv 25 years ago. Already in the mid-90s, this calculator was not interesting to those users who had experience with normal calculators at that time.
<<... - this model actually performs the
calculations as the steps are being recorded!>>
These steps need to be typed blindly without displaying codes and a counter, running your finger over a piece of paper with the program text. Now I`m looking at a new generation of designers who are designing an office chair in SolidWork that falls apart after half a year of operation. But in those days we calculated very complex projects on such primitive calculators.