Do you want to equip your schoolchild with a calculator that will last through secondary school and university? Put your trust in the Casio calculator. The advantage of this Casio device is its ability to charge through a built-in solar panel. As a back-up power, you can use the LR44 battery. This calculator will last a lifetime. It has many scientific features and the function of generating the QR code on the display. The Casio FX 991 CE X calculator also has a spreadsheet function that allows basic spreadsheet calculations.
In the Casio ClassWiz line, the calculators have a new 192 × 63 pixel high-resolution LCD display. This resolution is four times higher than it the well-known FX-ES plus series. The new calcultor also comes with a new hardware with a faster processor and double the amount of memory. This Casio product has a solid cover and features a new QR-Code function and the already-mentioned spreadsheet.