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
Casio CFX-9850GB-plus (donkergrijs) (1997) - Casio - LastDodo
Casio CFX-9850GB PLUS User Manual | 19 pages | Also for: CFX-9950GB PLUS
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TOSEC: Casio CFX-9850 (2012-04-23) : Free Download, Borrow, and Streaming : Internet Archive
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![Programming Examples - Casio CFX-9850G PLUS Programming Manual [Page 3] | ManualsLib](https://static-data2.manualslib.com/product-images/46/4589/458805/raw.jpg "Programming Examples - Casio CFX-9850G PLUS Programming Manual [Page 3] | ManualsLib")
Programming Examples - Casio CFX-9850G PLUS Programming Manual [Page 3] | ManualsLib
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Casio 9850 series - Wikipedia
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Calculator Notes for Casio CFX-9850GB Plus (PDF)
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Casio CFX-9850GB Plus color graphing calculator (2002) - YouTube
Casio CFX-9850 serial link to PC. | Barrowbiker's Blog
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Casio CFX 9850GB Plus Color Graphing Calculator 32 KB Black 79767158200 | eBay
