The Casio fx-991 MS is a scientific calculator with many powerful features. Some of these can greatly reduce the effort when solving problems. It is both Solar powered and battery powered; it has 401 functions, store 80 numbers and can deal with complex numbers, equations, numerical differentiation and integration etc. The calculator is almost in new condition.
* Two way power
* 401 Functions
* Dot Matrix
* 2-Line Display, 10+2 Digits, Plastic Keys
* Multi-replay function, Matrix calculations, Equation calculations, Vector calculations, Differential calculations, SOLVE function