George Stagg on X: "I'm currently suffering with Covid-19. In "celebration", here is a twitter thread describing my Covid lockdown project: hacking a Casio CFX-9850G calculator, from 1996 with 32KB of RAM
www.casio-calculator.com Casio 001
The very first Graphing Calculator with a Color Display – CASIO CFX 9850 Review — Wenting's Web Page
Whats inside a CASIO CFX-9850G
casio cfx-9850g graphing calculator color power graphics 32KB | eBay
Casio - CFX-9850GB PLUS - - Graphic calculator - Casio CFX9850GB PLUS - Casio.ledudu.com - Casio pocket computer, calculator, game and watch library. - RETRO CALCULATOR FX PB SF LC SL HP FA
Casio CFX-9850G 32KB Color Power Graphic Calculator – Ocean County Music
Casio CFX-9850G 32KB Color Power Graphic Calculator Pre-owned Tested | eBay
Casio CFX-9850 serial link to PC. | Barrowbiker's Blog