The fx-CG20 is an advanced graphic calculator, with natural maths display on a full-colour, high resolution backlit screen.
The fx-CG20 was discontinued in 2017 and replaced with the fx-CG50. At present the fx-CG20 calculator can be updated to have the same software as the fx-CG50.0
The Natural Display (Natural-V.P.A.M.) shows mathematical expressions like roots and fractions as they appear in your textbook, and this increases comprehension because results are easier to understand.
The fx-991ES was discontinued in 2017 and replaced with the fx-991EX ClassWiz.