A really well-functioning computer, only the processing leaves something to be desired. (Wobbly keys) I have FX-115 good Casio (cost over 45 Euro had) who is also a bit dated and that is, from the feeling a lot more customer value. But they both do what they should and this "FX-991 De plus" is in provided great because you can type in complicated tasks such as they are often seen in the tasks and also if you look at the task, for example, with * and: has squandered and the result does not seem to be correct, you can still change it retrospectively. What can be a very useful technique when it was a long and complicated task. (I previously knew so not from such an affordable computer.)
