Casio FX-991EX ClassWiz Scientific Calculator

Engineered specifically for high school candidates, engineering students, university science majors, and technical professionals across Kenya, the Casio FX-991EX ClassWiz Scientific Calculator is a high-performance mathematical tool built for speed and precision. Featuring Casio’s signature high-resolution Natural Textbook Display, it renders mathematical expressions, fractions, square roots, calculus bounds, and logarithmic functions exactly as they appear in standard textbooks. Designed for accuracy, it simplifies complex operations for classroom learning, laboratory research, and timed national examinations.

High-Resolution Natural Textbook Display & Onboard Spreadsheet Mode

A defining feature of the Casio FX-991EX ClassWiz Scientific Calculator is its high-definition LCD screen, which offers four times the resolution of traditional two-line calculators. This allows the display of complex formulas, multi-row matrices, and clear numerical tables without truncation or confusing single-line abbreviations.

Additionally, this model includes an onboard spreadsheet mode. Users can input basic data tables, compute row and column sums, calculate averages, and analyze statistical trends directly on the calculator screen. This functionality provides a powerful bridge between introductory math and modern data analysis without requiring a computer.

552 Built-In Advanced Scientific & Engineering Functions

Equipped with 552 integrated functions, the Casio FX-991EX ClassWiz Scientific Calculator provides complete computational capability across secondary school and university STEM curricula:

• Calculus & Differential Calculations: Perform numerical integration, differentiation, and continuous summation ($\sum$) operations with high precision.

• Matrix & Vector Algebra: Process matrices up to $4\times4$ and solve complex 3D vector dot and cross products required in engineering mechanics.

• Equation & Polynomial Solvers: Solve simultaneous linear equations with up to 4 unknowns and polynomial equations up to the 4th degree effortlessly.

• Complex Number Processing: Easily compute complex numbers in both rectangular ($a+bi$) and polar ($r\theta$) coordinate formats.

• QR Code Graphing Integration: Generate on-screen QR codes for mathematical functions that can be scanned using a smartphone to display graphs and interactive tables via Casio’s web service.

Dual Power System for Maximum Exam Reliability

Never worry about running out of power during a critical assessment. The Casio FX-991EX ClassWiz Scientific Calculator utilizes an intelligent Dual Power system (Solar + Battery Backup). Under normal lighting conditions, the integrated solar cell powers the device completely. When testing in low-light rooms or dimly lit halls, the internal battery takes over seamlessly to ensure unbroken performance.

Non-Programmable & Fully Exam Approved Across Kenya

Compliance with examination policy is critical for students. The Casio FX-991EX ClassWiz Scientific Calculator is strictly non-programmable, containing no wireless connectivity, flash memory drives, or text-storage features that violate testing guidelines. It is widely accepted and approved for use by secondary school boards, national examination supervisors, and university faculties across Kenya.

Key Features of the Casio FX-991EX ClassWiz Scientific Calculator

• High-Resolution Natural Display: Displays equations, fractions, and square roots exactly as written in textbooks.

• Dual Power Protection: Solar cell with internal battery backup for uninterrupted exam performance.

• Integrated Spreadsheet Capability: Create basic tables, calculate averages, and analyze data on the go.

• 552 Scientific Functions: Handles calculus, matrices, vectors, probability, and complex numbers.

• Fast & Reliable Processor: Rapid formula execution for high-speed testing scenarios.

Technical Specifications

Common Applications

• Advanced Mathematics & Sciences: High school algebra, geometry, physics, and chemistry coursework.

• Engineering & Technical Studies: Electrical, mechanical, civil, and software engineering math.

• Statistics & Business Math: Data analysis, probability distribution, and financial computations.

• National & University Exams: Trusted non-programmable calculator for secondary and tertiary testing.

Package Includes

• 1 × Casio FX-991EX ClassWiz Scientific Calculator

• 1 × Protective Slide-On Hard Shell Cover

• 1 × User Manual & Quick Start Guide