hangyodon1123 on X: "Casio fx-4500P There are thin protrusions on both sides of the [AC](ON) key. The power does not turn on without permission. https://t.co/306HCLPNHh" / X
Manual FX-4500P | PDF | Arithmetic | Elementary Mathematics
Casio fx-4500P: Nice looking pocket machine made in China
Casio FX-4500P
Casio fx-4500P Scientific Calculator from 1989 - YouTube
Casio Fx-4500 PA Scientific Calculator. - Etsy Norway