Casio Fx-82ms Emulator |work|

The Casio fx-82MS runs on a proprietary 4-bit or 8-bit microcontroller (often a variant of the NEC uPD series). Writing an emulator for this requires emulating the CPU core and the LCD controller.

"Examining the use of the Casio fx-82MS scientific calculator in the teaching and learning of mathematics" (or variations thereof in regional math education journals). Casio Fx-82ms Emulator