The calculator is super processed and provides, in contrast to its predecessor, the Casio FX-991, the much better display of the content can be read much better. Also entering comparatively longer Ausrücke is very comfortable. Although it is rather irrelevant, the design of the calculator with quite likes. It has a pleasant "scientifically". The keys have all continued a soft pressure point. Here has rather changed nothing with its predecessor. However, the upper row of keys in aluminum (optical) makes a noble impression. Only the price is to be mentioned as a point of criticism. Compared to its predecessor, the price jumped by around 11 is rather unjustified but so just playing life. Beautiful would be a new price for the old and maybe 25 for the new. Whether the lid sometime exactly ausleiert and no longer holds true as a lid to be seen.
Approved or not?
If the calculator approved for teaching or for examinations? On this website ([...]) You can check whether this (and other machines) are admitted with you in your state. And here ([...]) You can find the manual for the Casio FX-991DEX.
Positive noticed is me ..
Good quality of the housing
Contemporary design
Nice large display with a reasonable resolution
Maintaining the solar cell
The one negative I ...
Price a bit high
Unfortunately, the cover no longer present list of constants is (very annoying)
Thus I come to the following conclusion:
A super calculator to a still acceptable price - strong buy recommendation. Remains to be seen whether the lid similar to its predecessor ausleiert over time and no longer engages properly or no longer holds.