That Dragon Guy on X: "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
Virtual Museum of Calculators
SL-800 (Casio)
SL-800 Film Card calculator | 102636433 | Computer History Museum
Vintage Made in Japan Casio SL750 Solar Cell Solar Powered - Etsy
Casio SL-800 Taschenrechner Film Card Vintage | Kaufen auf Ricardo
Casio SL-800 WE
Casio SL-800 Taschenrechner Film Card Vintage | Kaufen auf Ricardo
Casio SL-800 (A)
File:CASIO SL-750.jpg - Wikimedia Commons
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Casio - SL-800 - - LCD calculator - Casio SL800 - Casio.ledudu.com - Casio pocket computer, calculator, game and watch library. - RETRO CALCULATOR FX PB SF LC SL HP FA
CASIO カシオ 計算機 SL-800 フィルムカード カード型電卓 hrbi.hr
DATAMATH
Casio SL-800 | 102627331 | Computer History Museum