Casio Fx-570ES is one of my useful items for ordinary computing up to scientific computing which involves trigonometric functions, logarithmic functions, integration, equations, points in graph, matrix and other functions. When I ls"am a freshman in Mapua I decided to buy a calculator that I can be use until I start working this why I decided to buy the Casio fx-570ES it has a natural display has a natural display which means you can write a fraction on this type of calculator which also gives you a fraction answer. It has also a conversion in which the user can convert length, weight and temperature. This calculator is quite high price but its worthy for its features and durability. I think Ir've been drop this calculator more than 3 times during my examinations but still it is working until now. This calculator was mainly used by engineering students so it is very important for all engineering college students in Mapua.