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CASIO fx-4000P scientific calculator from 1986
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File:Casio fx-3800P.JPG - Wikimedia Commons
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Casio fx 7000 | Tech history, Slide rule, Calculator
CASIO fx-4000P scientific calculator from 1986
CASIO FX-4000P – Le Rayon des Calculatrices
Calculadoras programables Basic - Casio, Sharp, Canon, Texas Instruments, Amstrad, Psion. Manuales.
Casio fx-4000P Scientific Calculator from 1985 - YouTube
DAN'S CASIO fx-4000P PROGRAMS PAGE
