Another calculator, Casio FX-850P - I still use it today : r/vintagecomputing
The Casio FX-850p Pocket Computer circa 1987, upgraded to 16k so that you can compute anything anywhere anytime! (portable week) : r/retrobattlestations
The Casio FX-850p Pocket Computer circa 1987, upgraded to 16k so that you can compute anything anywhere anytime! (portable week) : r/retrobattlestations
Calculators
Casio FX-850P | IT History Society
Casio FX-850P Personal Computer - Made in Japan | #1887010511