Casio FX--991EX Classwiz Complete Guide

The ClassWiz features a high-resolution display - making it easier to view numerical formulas and symbols. The ClassWiz makes it possible to display on the screen twice the number of characters in normal size and six times the number in small size compared with previous models. A high-performance processor and twice the memory of previous models ensure speedy operation and superior computational power.

Casio Fx-991ex ClassWiz Scientific Calculator, LCD Display 552 Functions - Black

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Casio FX-991EX Engineering/Scientific Calculator, Black, 3 x 6.5 x 0.4 : Office Products

Casio fx-991EX Classwiz is the preferred choice of every students. The fastest and most recommended scientific calculator!

Casio FX--991EX Classwiz Complete Guide

ClassWiz Calc App User's Guide

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