Probably the best "non-programmable" machine

Pro:
Very versatile machine with a practical "DOT-matrix display" the multiple rows - depending on need - represents. It really on the display which "level" has a clip or what number is at or below a fraction bar.

This advantage is also a disadvantage at the same time:
The input example of a root expression takes significantly longer than with a single-line computer, because you have to drive each of the input points with the cursor. (Eg the "gap" above before the square root sign if you want to enter, for example, 3. root), then over to the office under the root and if you then before the root has an open parenthesis that one wishes to close one must make sure the not to put closing parenthesis directly after the number of the clip, but still manually one further back, so that the clip is not placed under the root but behind it.
(In text form hard to explain ...)

Add to that that the cursor EEEEEEEEEENDLOOOOOOOS LAAAAAAANGSAAAAAAM is. From any of the previous models I'm used to it that you immediately could quite make the end of the expression with the cursor or with just the front here. That does not go with this computer. (At least I have found no way)

Normally one has the time, but in a maths test where a precisely those under the nails burns can a musss the pretty drive the sweat if you have NEM longer term front Forgot ne bracket and back 18 times press , the clip is and then 18 times to the same game to continue working again.
This can drive one to the brink of insanity ...

Apart from that, I can recommend the computer but. Among the not programmable models, this is likely to be the most versatile.
4 stars from me.