Fx-6300G
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The Casio fx-6300G is both an advanced programmable calculator and a graphing calculator. Calculations can be performed using written formulas (true algebraic logic). Programs (up to 400 bytes) can be stored in memory for later execution. This calculator was first produced by Casio in 1991 and has existed for many years, but it is still very popular because of its small size and its easy keyhandling. It is powered by two CR-2032 lithium batteries.