fx-9860gii-2 brief introduction

[Hlib]

Thanks to xerxes for this final result. With array type fx-9860gii-2 appears bit faster, in C.Basic it gives the same time regardless of whether USB is connected or not:
- 0.673_s / INT% mode (32 bits) / C.Basic 2.37
- 1.034_s / DBL# mode (64 bits) / C.Basic 2.37
I do not use the FTune program for fast mode, since the speed here is proportional to the drain of batteries, and there is no great benefit.
It seems that CASIO ended the era of the classic graphic calculator with the most successful model in this class, returning to it the former advantages of the best calculators of the first half of the 1990s: economy, versatility and speed.
Edit: minor typo