Casio FX-602P Ram Upgrade looking for srams

[blackjetrock]

(05-05-2023 05:24 AM)Paul Dale Wrote:  Springing for an FX-603P is far easier and less likely to ruin a beautiful calculator.

I really wish I'd kept the book of FX-602P programs I wrote. Some real gems in there.


Pauli

I'd second that. The FX-603P is a very nice calculator. They are expensive, though, and aren't quite as nice in the hand as a 502P or a 603P. Just a bit bigger and more plastic on display.

The problem with my 602Ps is that none of them work. they look nice but either the display has gone or the electronics has died. Hence the replacement PCB. The FX-502P, however, seems to survive much better, and few don't work. The FX501P seems to have a display seal problem as both of my examples have black screens.

Andrew