Circa 1995/6 was it for me but on Casio calculators [1] There were books devoted to it, I was able to program games, school cheat notes, brilliant memories. [

Circa 1995/6 was it for me but on Casio calculators [1] There were books devoted to it, I was able to program games, school cheat notes, brilliant memories. [1] https://fr.wikipedia.org/wiki/Casio_CFX-9960GT https://fr.wikipedia.org/wiki/Casio_CFX-9960GT