Casio FX 991ms Scientific Calculator

The Casio FX-991MS Scientific Calculator is a powerful and reliable scientific calculator designed to meet the needs of students, teachers, engineers, scientists, and professionals. As one of Casio’s most trusted calculator models, the FX-991MS offers a wide range of advanced mathematical and scientific functions while maintaining a simple and user-friendly interface.

Equipped with approximately 401 built-in functions, this calculator supports complex calculations across mathematics, physics, chemistry, engineering, statistics, and other technical disciplines. It is capable of handling trigonometric calculations, algebraic equations, fractions, logarithms, probability, statistical analysis, matrix operations, and complex number calculations, making it a valuable tool for both academic and professional use.

The calculator features a 2-line display, allowing users to view both the entered expression and the calculated result simultaneously. This improves accuracy, reduces input errors, and makes calculations easier to verify and edit. The built-in replay function also enables users to review and modify previous calculations without re-entering entire expressions.

Powered by both solar energy and battery backup, the Casio FX-991MS provides dependable performance in classrooms, examination halls, laboratories, offices, and fieldwork environments.

Key Features
Approximately 401 built-in scientific functions
Two-line display for expressions and results
Solar power with battery backup
Complex number calculations
Statistical and regression analysis
Matrix and vector calculations
Fraction calculations
Trigonometric and inverse trigonometric functions
Logarithmic and exponential functions
Equation solving capabilities
Replay and editing functionality
Durable and portable design
Specifications
Product Name: Casio FX-991MS
Brand: Casio
Product Type: Scientific Calculator
Display: 2-Line LCD Display
Functions: Approximately 401 Functions
Power Source: Solar and Battery
Memory Variables: Multiple Memory Functions
Application: Mathematics, Science, Engineering, and Statistics
Usage: Educational and Professional Calculations
Who Should Use This Product?

The Casio FX-991MS Scientific Calculator is ideal for secondary school students, university students, lecturers, engineers, architects, surveyors, scientists, technicians, accountants, and professionals who require advanced calculation capabilities.

Benefits

This calculator helps simplify complex mathematical and scientific calculations while improving accuracy and efficiency. Its extensive function library supports a broad range of academic and professional applications, while the dual power system ensures reliable operation even during extended use.

Delivery and Usage Information

The calculator is carefully packaged to ensure it arrives in excellent condition. It is ready for immediate use and typically includes a protective slide-on hard case for safe storage and transportation. Store in a clean, dry environment and follow the manufacturer's guidelines for optimal performance and long-term durability.