![That Dragon Guy on Twitter: "MOAR VINTAGE STUFF: sure, one can buy a cheap “credit card size” calculator at a dollar store nowadays, but they're always a few millimeters thick. Casio's SL-800 That Dragon Guy on Twitter: "MOAR VINTAGE STUFF: sure, one can buy a cheap “credit card size” calculator at a dollar store nowadays, but they're always a few millimeters thick. Casio's SL-800](https://pbs.twimg.com/media/DV5IcFRVwAAFWQq.jpg:large)
That Dragon Guy on Twitter: "MOAR VINTAGE STUFF: sure, one can buy a cheap “credit card size” calculator at a dollar store nowadays, but they're always a few millimeters thick. Casio's SL-800
Casio Education - 1983 Casio's launch of the SL-800, a 0.8-mm thin credit card size calculator. Archived at the Museum of Modern Art, New York. | Facebook
![VIDEO: Vintage Casio SL-800 Calculator is Wafer-Thin « Adafruit Industries – Makers, hackers, artists, designers and engineers! VIDEO: Vintage Casio SL-800 Calculator is Wafer-Thin « Adafruit Industries – Makers, hackers, artists, designers and engineers!](https://cdn-blog.adafruit.com/uploads/2021/07/Casio-SL-800-Thumbnail.jpg)