Casio FX 991 CE X Calculator

The use of symbols on the menu screen enhances clarity. Selecting the desired function is quick and easy. Input and display of fractions, powers, logarithms, roots, and other mathematical formulas and symbols as they appear in textbooks.

Stored variables and statistical ...The use of symbols on the menu screen enhances clarity. Selecting the desired function is quick and easy. Input and display of fractions, powers, logarithms, roots, and other mathematical formulas and symbols as they appear in textbooks.

Stored variables and statistical calculation results can be displayed in lists. It is no longer necessary to call up and confirm individual values as was required in previous models. Almost all English words are displayed in their full form on the screen.

The interactive menu display allows for more intuitive operation.