The Casio FX-850p Pocket Computer circa 1987, upgraded to 16k so that you can compute anything anywhere anytime! (portable week) : r/retrobattlestations
Service Manual & Part List - Casio FX 850p - 1987 | PDF | Random Access Memory | Integrated Circuit
Casio - The FX-850p series - - Pocket computer - Casio The FX850p series - Casio.ledudu.com - Casio pocket computer, calculator, game and watch library. - RETRO CALCULATOR FX PB SF LC SL HP FA