Casio FX-991ES PLUS 2nd Edition Scientific Calculator - Blue - 417 Functions - Dual Power | FX-991ES PLUS-2BU
Master complex mathematical calculations with the Casio FX-991ES PLUS 2nd Edition Scientific Calculator - Blue | FX-991ES PLUS-2BU, featuring 417 scientific functions, Natural Textbook Display, and dual solar and battery power. Designed for students, teachers, and professionals, this advanced non-programmable scientific calculator provides reliable performance for mathematics, algebra, trigonometry, statistics, and scientific calculations. Its elegant blue finish, ergonomic keyboard, and clear dot-matrix display combine modern styling with practical functionality for everyday academic use.
The Casio FX-991ES PLUS-2BU Scientific Calculator features an advanced Natural Textbook Display that presents mathematical expressions, fractions, square roots, and calculation results in a familiar textbook-style format. With support for equation solving, matrix and vector calculations, complex numbers, numerical integration, differentiation, and statistical analysis, it offers versatile functionality for demanding coursework and scientific applications. The solar and battery dual-power system ensures convenient operation under different lighting conditions, while the included slide-on protective hard case, automatic power-off function, and lightweight construction make it an excellent companion for classrooms, universities, and examinations where permitted.
• 417 Scientific Functions: Comprehensive mathematical capabilities for algebra, calculus, trigonometry, statistics, and scientific applications.
• Natural Textbook Display: Displays fractions, square roots, mathematical expressions, and results in a familiar textbook-style layout.
• Dual Solar & Battery Power: Combines solar energy with battery backup for reliable operation in different lighting conditions.
• Elegant Blue Design: Attractive blue exterior adds a distinctive touch to the classic Casio scientific calculator.
• 10 + 2 Digit Display: Clear LCD with dot-matrix technology supports detailed mathematical expressions and scientific notation.
• Equation Solving Functions: Solve supported simultaneous and polynomial equations for advanced mathematics coursework.
• Numerical Integration & Differentiation: Perform numerical calculus calculations directly from the calculator.
• Matrix Calculations: Supports matrix operations for algebra, engineering, and higher-level mathematics.
• Vector Calculations: Perform vector calculations for physics, mathematics, and engineering applications.
• Complex Number Calculations: Supports calculations involving real and imaginary numbers.
• Advanced Statistics: Includes standard deviation, regression analysis, and a list-based statistical data editor.
• Trigonometric Functions: Calculate sine, cosine, tangent, inverse trigonometric functions, and related operations.
• Logarithmic & Exponential Calculations: Supports logarithms, exponentials, powers, roots, and scientific notation.
• Fraction Calculations: Work with fractions and convert supported results between mathematical formats.
• Scientific Constants & Metric Conversions: Provides built-in scientific constants and conversion functions for physics and scientific calculations.
• CALC & SOLVE Functions: Evaluate stored mathematical expressions and solve supported equations numerically.
• Table Function: Generate tables of values for supported mathematical functions.
• Base-N Calculations: Supports calculations using different number bases and logical operations.
• Permutation & Combination Functions: Useful for probability, counting principles, and combinatorics.
• Random Number Generation: Includes random number and random integer functions for statistical and mathematical applications.
• 9 Variable Memories: Store and recall values for multi-step calculations.
• Fast-Typing Keyboard: Two-key rollover supports smooth entry of mathematical expressions.
• Automatic Power Off: Helps conserve battery energy when the calculator is not in use.
• Slide-On Protective Hard Case: Included cover protects the display and keyboard during storage and transportation.
• Non-Programmable & Non-Graphing: Traditional scientific calculator design suitable for educational environments that permit this calculator category.
| Specification |
Details |
| Brand |
Casio |
| Series |
FX-991ES PLUS |
| Edition |
2nd Edition |
| Model |
FX-991ES PLUS-2PK |
| MPN |
FX-991ES PLUS-2PK |
| Product Type |
Scientific Calculator |
| Color |
Blue |
| Number of Functions |
417 |
| Calculator Type |
Non-Programmable / Non-Graphing |
| Display Technology |
LCD Dot-Matrix Display |
| Display Format |
Natural Textbook Display |
| Number of Digits |
10 + 2 Digits |
| Power Source |
Solar & Battery |
| Approximate Battery Life |
3 Years |
| Automatic Power Off |
Yes |
| Equation Calculations |
Yes |
| Numerical Integration |
Yes |
| Numerical Differentiation |
Yes |
| Matrix Calculations |
Yes |
| Vector Calculations |
Yes |
| Complex Number Calculations |
Yes |
| Trigonometric Calculations |
Yes |
| Inverse Trigonometric Calculations |
Yes |
| Hyperbolic Functions |
Yes |
| Logarithmic Calculations |
Yes |
| Exponential Calculations |
Yes |
| Fraction Calculations |
Yes |
| Permutation & Combination |
Yes |
| Factorial Function |
Yes |
| Summation Function |
Yes |
| Base-N Calculations |
Yes |
| Logical Operators |
Yes |
| Coordinate Conversion |
Yes |
| Scientific Constants |
Yes |
| Metric Conversions |
Yes |
| Statistics |
Standard Deviation / Regression Analysis |
| Statistical Data Editor |
List-Based |
| Table Function |
Yes |
| CALC Function |
Yes |
| SOLVE Function |
Yes |
| Random Number Generation |
Yes |
| Random Integer Generation |
Yes |
| Variable Memory |
9 Variables |
| Additional Memory |
Independent Memory / Answer Memory |
| Replay Function |
Yes |
| Fast-Typing Function |
2-Key Rollover |
| Display Number Formats |
Fix / Sci / Norm / Engineering Notation |
| Keyboard Material |
Plastic Keys |
| Dimensions (D × W × H) |
161.5 × 77 × 11.1mm |
| Weight |
95g |
| Protective Cover |
Slide-On Hard Case Included |
| Recommended Use |
School / University / Mathematics / Physics / Engineering / Statistics |
