The Casio FX-850p Pocket Computer circa 1987, upgraded to 16k so that you can compute anything anywhere anytime! (portable week) : r/retrobattlestations
Casio fx-850p Personal Computer Calculator Scientific Library 116 | eBay
Casio FX-850P
The Casio FX-850p Pocket Computer circa 1987, upgraded to 16k so that you can compute anything anywhere anytime! (portable week) : r/retrobattlestations