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Calculatrice graphique Casio Graph 25+ Graphing calculator Casio 9850 series, calculator, electronics, calculator, casio png | PNGWing
![George Stagg on Twitter: "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 George Stagg on Twitter: "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](https://pbs.twimg.com/media/FPbd_Z7X0AgFZbg.jpg:large)