Casio makes several different types of scientific calculators, including graphic models, programmable models, natural textbook display, ClassWiz models and financial consultant. Casio also offers standard and graphic models with CAS capability.
Computer algebra system, or CAS, is a software program that allows users to manipulate mathematical expressions in a similar way a scientist or mathematician would manually express computations. ClassPad II fx-CP400, ClassPad 330 PLUS and ALGEBRA FX 2.0 PLUS are the three graphic models with CAS capability offered by Casio. The ClassPad models come with a stylus. Casio offers nine standard models, including the fx-82MS, fx-85MS, fx-350MS, fx-95MS and fx-500MS.