![Sharp EL-9900C Reversible Keypad Graphing Calculator Image - Click to enlarge](https://s.turbifycdn.com/aah/calculatorsource/sharp-el-9900c-reversible-keypad-graphing-calculator-15.gif) ![](/lib/calculatorsource/trans1x1.gif) This item has been discontinued by the manufacturer.
A revolutionary Graphing Calculator that takes you from junior high through high school and beyond. The unique 2-sided reversible keypad provides increased functionality as the students' education advances.
![](http://www.1-step.com/images/ad468x60.gif)
Features:
- Reversible Keyboard supports junior high, high school, and beyond.
- Large Display: 8 line x 22 character LCD display (132 x 64 pixels)
- Tool key solves second and third degree polynomial equations.
- D.A.L. (Direct Algebraic Logic)
- Advanced functions are accessible via pull-down menus.
- Equation Editor shows equations exactly as they appear.
- Solver Key allows you to solve equations both numerically and graphically.
- Additional Features include 64KB RAM, mixed fraction entry & output, split screen option, multiple slide shows, communications port, and protective hard cover.
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