Casio's and Complex Numbers

[edryer]

Thanks, will look into them.

I have just started collecting a few Casio devices (starting with an FX-602P) as in the UK most of us in the 80's and 90's at School were raised on Casio (vs TI in the US) with the FX80/FX81/FX82 range being the standard (and so many variants of these). Almost every student in my School had an FX81 when I attended!

Interesting the first in the line (cheap School/College Scientific) being the FX80 (I think was actually 1979) had the same yellow protective LCD of the FX-501/502P, after that changing to the normal LCD.

In fact the FX501P/FX502P was probably Casio's first LCD Scientific.... followed by the FX80....

Mind you could be wrong!