CASIO fx-3600P scientific calculator from 1985

[xerxes]

(05-31-2018 05:47 PM)Csaba Tizedes Wrote:  I have one workable but not so good shaped CASIO fx-6300G. If inside I found a crystal oscillator, can I try to change it?

I've overclocked my FX-6300G from 0.8 to 2.6 MHz many years ago and it still works flawlessly.
In the case of the FX-6300G, you only need to change the resonator.