Casio College fx-80 : which IC hides inside ?

[damaltor]

Casio used mostly specialty ICs, made just for that exact calculator model. Most of the fx series do only have a single IC in them which contains Keyboard scanner, Display driver, RAM, ROM and CPU. I dont have an fx80 but lots of other casios of that time, and most of them have nothing interesting inside them - just that only IC which is different for every calculator model.