Casio Fx-7000G

The Casio FX-7000G is a calculator which is widely known as being the world's first graphing calculator available to the public. It was introduced to the public and later manufactured between 1985 and 1987. Notable features are its ability to graph functions, and that it is programmable. The calculator offers 82 scientific functions and is capable of manual computation for basic arithmetic problems.

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Casio Fx-7000G - Display and Exterior - Power
... The Casio Fx-7000G needs a 9.0 volt DC current lithium battery supply provided by 3 CR2032 type cells ... is a small slider half-way up the left-hand side The lower keys have the traditional Casio layout ...