Initially a bit complicated

At first I found the calculator a bit complicated.
But after a few inquiries with classmates could well understand the system of the computer yet.
When I had the calculator at the beginning, I have partial results even with my old Texas Instrument calculator recalculated. And, amazingly, came out partially completely different results, despite the same Eintippweise.
Why? Well, the equal sign is not necessarily the result with below, which actually expected. Waru remains a mystery to me. Knowing, however, the SD button then you also get the desired result.

Yes, it was at the beginning a little more change, but after a little practice, it can be with this calculator but work well.

The only major downside for me is that this Casio calculator does not have the function to resolve an equation for X, as can many other that mark.
Too bad, but not to change.

In spite of everything, a good computer that can especially with the automatic switch-off, the duration can be adjusted manually, points.

Recommendable