Casio Fx-991Es Plus Scientific Calculator

The Casio FX-991ES Plus is an advanced scientific calculator featuring 417 functions and a Natural Textbook Display that shows mathematical expressions as they appear in textbooks. This non-programmable calculator combines sophisticated functionality with user-friendly operation for students and professionals. Key features: • Natural Textbook Display for clear mathematical expressions • 417 built-in mathematical functions • Solar powered with battery backup • 10-digit mantissa plus 2-digit exponential display • Advanced statistical and scientific calculations • Multi-replay function for formula editing • Plastic keys designed for comfortable use The calculator includes functions for trigonometry, statistics, engineering calculations, and more. It features a high-resolution dot matrix display and comes with a protective hard case. The device can perform complex calculations including matrix operations, vector analysis, and equation solving. Its dual power system ensures reliable operation in any lighting condition. The calculator's compact dimensions and lightweight design make it highly portable for academic and professional use.