Scientific Calculator

Original Casio fx 991ES plus 2nd edition

Key Features;

- 10 + 2 digits

- 417 Functions

- Natural Textbook Display Solar Battery - Multi-replay (Quick and easy recall of previously executed formulas for editing and re-execution)

- Combination and permutation -Integration/differential calculations Matrix and Vector calculations

- Complex number calculations Base-n calculation

- Statistics (List-based STAT-data editor, Standard deviation, Regression analysis)

- Table function Comes with new slide-on hard case

- Power supply:Solar and Battery