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Casio Education US on Twitter: "1985 – Casio's launch of the fx-7000G, the world's first graphing scientific calculator. Archived at the Smithsonian's National Museum of American History, Washington, D.C. #funfact #casiohistory#casioorigin https://t.co ...
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Nerd Watch Museum: Calculator Watches, Part One | Vintage Electronics Have Soul – The Pocket Calculator Show Website
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