Casio FX-991CW Classwiz Non-Programmable Scientific Calculator
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Scientific Calculator with inbuilt QR Code function --Calculator can generate QR Code -- Useful from graphical visualization & accessing user manual using your smart phone

Faster than any previous Casio Non-Programmable Scientific Calculator

Up to Four Degree Simultaneous and Polynomial Solver, Numerical Integration, Differentiation, Statistics, Matrix, Vector Calculation