CASIO FX-991 ES Plus or FX-991 EX-Classwiz : Which Scientific Calculator is best for Engineering Students?

Choosing the right scientific calculator is essential for engineering students, given the complexity and range of calculations required in their coursework. CASIO, a leading brand in the market, offers several models tailored to meet the needs of students and professionals alike. Among the most popular models are the CASIO FX-991 ES Plus (both 1st and 2nd editions) and the CASIO FX-991 EX-Classwiz. This article provides a detailed comparison of these calculators, covering their features, functions, design, warranty, and price to help you make an informed decision.

1. Casio FX-991 ES Plus: 1st and 2nd Edition

Features and Functions

1st Edition:

Natural Textbook Display: This feature allows expressions and results to be displayed as they appear in textbooks, making it easier to understand and follow calculations.

417 Functions: Includes complex number calculations, matrix and vector calculations, integration and differentiation, and more.

Solar and Battery Power: Ensures long-lasting performance with dual power sources.

Equation Solver: Helps solve polynomial and simultaneous equations.

10+2 Digit Display: Offers a clear view of large numbers and complex expressions.

2nd Edition:

Enhanced Display: Improved display quality for better readability.

Additional Functions: Includes improved computational capabilities and more functions compared to the 1st edition.

Same Core Features: Retains all the features of the 1st edition, including natural textbook display and dual power.

Design

Both editions of the FX-991 ES Plus feature a sleek, ergonomic design with a sturdy plastic body. The keys are well-spaced and designed for ease of use, ensuring comfortable and efficient data entry.

Warranty

CASIO offers a standard 3-year warranty on the FX-991 ES Plus, covering manufacturing defects and ensuring reliable performance.

Price

1st Edition: Generally priced around $20-$25.

2nd Edition: Slightly higher, around $25-$30, due to enhanced features and improved display.

2. Casio FX-991 EX-Classwiz

Features and Functions

High-Resolution LCD: Provides a clearer and more detailed display of calculations.

552 Functions: A broader range of functions, including advanced statistical distribution, probability calculations, and QR code generation for graphing on smartphones.

Natural Textbook Display: Similar to the ES Plus series, allowing expressions and results to be displayed as they appear in textbooks.

Faster Processor: Significantly faster than the ES Plus models, ensuring quicker calculations.

Improved Memory: Enhanced memory capacity for handling more complex calculations.

QR Code Functionality: Allows users to generate QR codes for graphs and access detailed solutions and visualizations via smartphones.

Dual Power: Solar and battery power for extended usage.

Design

The FX-991 EX-Classwiz features a modern, professional design with a high-resolution display. The interface is intuitive, with clearly labeled keys and a user-friendly layout. The calculator is slightly more robust than the ES Plus models, reflecting its advanced capabilities.

Warranty

CASIO provides a 3-year warranty for the FX-991 EX-Classwiz, similar to the ES Plus models, ensuring dependable performance and support.

Price

Generally priced around $30-$35, reflecting its advanced features and superior performance.

3. Which One is Good for You?

Casio FX-991 ES Plus (1st and 2nd Editions)

Pros:

Affordable and reliable.

Comprehensive functions suitable for a wide range of engineering calculations.

Natural textbook display aids in understanding complex expressions.

Dual power ensures long-lasting use.

Cons:

Slightly lower display resolution compared to the Classwiz.

Slower processing speed for complex calculations.

Ideal For:

Engineering students looking for a budget-friendly, reliable calculator with all essential functions.

Those who prefer a traditional calculator layout and design.

Casio FX-991 EX-Classwiz

Pros:

High-resolution display for clearer and more detailed calculations.

Faster processing speed for quick and efficient calculations.

Broader range of functions, including advanced statistical and probability calculations.

QR code functionality for enhanced learning and visualization.

Modern, professional design.

Cons:

Slightly higher price point compared to the ES Plus models.

Ideal For:

Engineering students who require advanced features and faster processing speeds.

Those who benefit from additional functionalities like QR code generation for graphing and enhanced memory capacity.

Students willing to invest a bit more for a superior display and performance.

Conclusion

Choosing between the CASIO FX-991 ES Plus and the FX-991 EX-Classwiz depends on your specific needs and budget. The FX-991 ES Plus is a reliable, affordable option with all the essential functions for engineering students. It is particularly suitable for those who prefer a traditional calculator design and are looking for a cost-effective solution.

On the other hand, the FX-991 EX-Classwiz offers advanced features, a high-resolution display, and faster processing speeds, making it ideal for students who require more robust capabilities and are willing to invest a bit more for enhanced performance and additional functionalities.

Ultimately, both calculators are excellent choices for engineering students, and your decision should be based on your individual preferences and requirements.