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File:Vintage Casio Personal M-1 Electronic Pocket Calculator, aka H-813B, Made In Japan, VFD, Circa 1978 - 1981 (15805562590).jpg - Wikimedia Commons
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File:Vintage Casio Biolator Pocket LED Calculator, Model H-801, Made in Japan, Circa 1975 (9273200144).jpg - Wikimedia Commons
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