The CASIO fx‑991EX (ClassWiz series) delivers unmatched performance with a high‑resolution LCD, 552 comprehensive scientific functions, and unique features like spreadsheet capabilities and QR code visualization for enhanced learning and exam readiness.
Key Features & Benefits
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High‑Resolution Dot‑Matrix LCD: Display up to 10+2 digits with Natural Textbook Display for formulas and fractions as seen in textbooks.
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Spreadsheet Functionality: Allows up to 5×45 grid calculations—ideal for statistics and data analysis. QR Code Plotting: Instantly generate QR codes from inputs to visualize graphs on your smartphone via ClassPad.net.
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Extensive Scientific Tools: Matrix, vector, simultaneous equations, factorial, inequality solving, numerical integration and differentiation, complex number operations, base‑n logic, conversions, statistics with distributions, and more.
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Dual Power Source: Solar‑assist with a backup LR‑44 battery—automatically switches to battery in low light.
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Fast Icon‑Based Menu Navigation: Intuitive and user-friendly, reducing multiple keystrokes for core operations.
Specifications
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Weight: approx. 90 g; Dimensions: ~162 × 80 × 11 mm
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Natural V.P.A.M., multi-line and multi-replay function memory, hardware shutdown for power-saving
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Authorized and official model with educational compliance
Why Choose the fx‑991EX?
Designed for GCSE, A‑Level, IB, university, and professional users. Its robust calculation suite paired with visualization features makes it ideal for students and STEM professionals alike.
