The Casio fx-82Au 2nd Edition calculator is ideal for those at school that need to complete scientific equations. It has a large, 16 digit display so that you can solve complex problems, with dual lines for algebraic formulas. It has a drop-resistant body for durability. The Casio fx-82AU is a scientific calculator, perfect for school use. It has a large, dual line 16-digit display which is easy to read and allows you to view the calculation and answer at the same time, as well as perform algebraic functions. This calculator is battery operated and uses AAA batteries.