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File:Vintage Casio Electronic Pocket Calculator, Model AL-8S, Made In Japan, 8 Digit Fluorescent Display, Circa 1977 (14212804553).jpg - Wikimedia Commons
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Amazon.com : Casio fx-300ES PLUS Scientific Calculator; SAT Compatible; Natural Textbook Display; Math, Trigonometry, Statistics, Algebra, Geometry and Physics Functions; Comes with Slide-on Hard Case; Black : Office Products
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Student Calculator 12 Digits Display Self-contained Voice Calendar Multifunctional Large Screen Desktop Calculator with Al - Walmart.com
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