Prism running on my calculator (Casio fx-CG50) : r/PokemonPrism
Got ahold of a Casio fx-991ex and CG-50 to match my Classpad II. I'm really impressed with them but there is something about the fx-991ex... (see comments) : r/calculators
2x Casio FX-CG50 Battery Replacement
Casio Prizm fx-CG50 Color Graphing Calculator 4646