200lx calculator

[Marco Polo]

Being my country in Covid lockdown o decided to play a little with my HP200lx, bought several years ago just for curiosity (a real bargain) but never used.
Well.... Aside the fascination of having an old msdos pc, I started playing with the calculator module.
Despite being not programmable (who cares? Just install your favorite language interpreter/compiler) has, a very good solver with multiple equations storage, named variables and other nice things like interface with Lotus 123.
In short, it easily outperform my 35s considering my daily calculation needs.
So I bought 4 Eneloop AA and started using it daily.... :-)