Reset / Clear Memory of Casio fx-991ES or fx-82ES Scientific Calculator
File:Vintage Casio Memory 8R (aka Y-811) LED Handheld Electronic Calculator, Made in Japan, Circa 1973 (8714236526).jpg - Wikimedia Commons
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File:Vintage Casio Memory-8F Pocket LED Calculator (aka H-812), Blue VFD, Made in Japan, Circa 1976 (9303006492).jpg - Wikimedia Commons
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File:Vintage Casio Memory-8 Handheld LED Electronic Calculator, Made in Japan, Circa the 1970s (8716119504).jpg - Wikimedia Commons
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