Rhodri Marsden on Twitter: "Let's hear it for the Casio fx-85 solar powered calculator, just discovered in a box in the loft and still working perfectly 35 years after it was bought.
Casio FX 85 GT X
Bedienungsanleitung Casio FX-85GT X (108 Seiten)
LambdaTek|Taschenrechner
CASIO FX-85DE X Technisch-wissenschaftlicher Rechner Taschenrechner | MediaMarkt