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File:Vintage Casio Model fx-7000G Scientific Calculator, LCD Dot Matrix Display, Made In Japan, World's First Graphing Calculator Available To The Public, Circa 1985 - 1988 (15810483905).jpg - Wikimedia Commons
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Sharp vintage calculator, electronic calculator, old school calculator, pocket calculator, green display, vintage school | Vintage, Vintage school, Pocket calculators
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File:Vintage Sharp Electronic Pocket Calculator, Model EL-805, COS-LCD, First Use Of The COS-LCD, Flip-Up Display Cover-Shield, Made In Japan, Circa 1973 (15271504422).jpg - Wikimedia Commons
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