At a Glance
| Criteria | Casio fx-991EX | Texas Instruments TI-30XS | Winner |
|---|---|---|---|
| Display clarity | High-resolution, multi-line display | Standard single-line display | A |
| Functionality | Extensive functions including calculus and statistics | Basic functions focused on core calculations | A |
| Ease of use | Intuitive with menu-based operation | Simple, direct button interface | B |
| Build quality | Solid build, slightly bulkier | Lightweight and compact | B |
| Battery life | Long-lasting battery | Average battery life | B |
| Price | Higher, but justified by features | Lower cost | B |
| Advanced features | Includes 550 functions, QR code for quick exam prep | Limited to essential scientific functions | A |
| Portability | Moderately portable, slightly larger | Highly portable, slim design | B |

Texas Instruments TI-30XIIS Scientific Calculator, Black with Blue Accents (30XIIS/TBL/1L1/BK)
Robust, professional grade scientific calculator. Logs and antilogs
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Texas Instruments TI-30XIIS Scientific Calculator

The TI-30XIIS is a trusted staple in classrooms, offering a dual-line display that shows your entry and results simultaneously, which enhances understanding and reduces errors. It handles a broad range of scientific and statistical functions, making it suitable for most high school and college courses. Compared to more advanced graphing calculators, it stays simple and focused, which is perfect for exam settings and daily practice. However, it lacks graphing capabilities and modern design aesthetics, which might be a drawback for students seeking more advanced features or sleeker looks. Its solar and battery power make it reliable in various environments.

Texas Instruments TI-30XIIS Scientific Calculator
- ✔ Display: 2-line
- ✔ Power: Solar and battery
- ✔ Modes: Degrees, radians, grads

Texas Instruments TI-30XIIS Scientific Calculator, Raspberry
- ✔ Calculator Type: Engineering/Scientific
- ✔ Power Source: Battery (Lithium Metal)
- ✔ Display Size: 2.2 inches

Texas Instruments TI-30XS MultiView Scientific Calculator
- ✔ Display: MultiView screen
- ✔ Functions: Scientific calculations, fractions, exponents, square roots
- ✔ Features: Math print mode, previous entry review, x, y tables
Pros:
- Dual-line display enhances clarity for calculations and results
- Handles complex scientific and statistical functions
- Solar and battery power offers flexibility and reliability
Cons:
- Limited to basic scientific functions—no graphing or advanced programming
- Design feels outdated compared to newer models
- No backlit display for night-time use
Best for: Students needing a dependable, straightforward scientific calculator for everyday coursework and exams.
Not ideal for: Students requiring graphing or programming capabilities, or those looking for a modern, high-tech device.
Bottom line: A reliable, no-nonsense calculator ideal for standard scientific and statistical work in educational settings.
“A reliable, no-nonsense calculator ideal for standard scientific and statistical work in educational settings.”

Texas Instruments TI-30XIIS Scientific Calculator, Raspberry Small
Robust, professional grade scientific calculator. Logs and antilogs
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Texas Instruments TI-30XIIS Scientific Calculator, Raspberry

The TI-30XIIS Raspberry combines core scientific functions with a vibrant color design that appeals to students looking for a fun, personalized calculator. Its two-line display allows for entry and result comparison, supporting understanding of calculations. It includes multiple angle modes and statistical functions, similar to the standard TI-30XIIS, but its small display size may pose challenges for users with visual impairments or those who prefer larger screens. Powered by a lithium metal battery, it is portable but requires occasional battery replacements. The colorful design makes it stand out but does not add functional advantages over the standard model.
Pros:
- Bright, engaging color design
- Two-line display supports easy entry and review
- Handles statistical and scientific functions well
Cons:
- Small display size may strain the eyes or hinder detailed work
- Limited to basic scientific functions—no graphing
- Requires battery replacements over time
Best for: High school students seeking a colorful, reliable scientific calculator with essential functions.
Not ideal for: Students needing a larger display or advanced graphing features.
Bottom line: A colorful, functional calculator suited for students who want reliable features with a bit of personality, but not for those needing larger screens.
“A colorful, functional calculator suited for students who want reliable features with a bit of personality, but not for those needing larger screens.”

Texas Instruments TI-30XS MultiView Scientific Calculator
Designed with unique features to allow you to enter more than one Calculation, compare results and explore patterns,...
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Texas Instruments TI-30XS MultiView Scientific Calculator

The TI-30XS MultiView elevates the scientific calculator experience with its multiple calculation views, allowing users to compare results side-by-side. The math print mode displays calculations in familiar notation, which aids comprehension, especially for learners trying to understand step-by-step processes. Its ability to generate x, y tables makes it an excellent tool for exploring functions and patterns. While it lacks advanced graphing, its multiple views and review features make it a top choice for students who want to deepen their understanding of math concepts. The smaller screen size might limit detailed viewing, but for most classroom tasks, it offers a balanced approach.
Pros:
- Multiple calculation views facilitate comparison and analysis
- Math print mode displays calculations in standard notation
- Supports exploring functions with x, y tables
Cons:
- Limited to basic scientific and math functions—not suitable for graphing
- Small screen size may hinder detailed viewing
- Higher price point compared to simpler models
Best for: Students who want to compare calculations, explore functions, and review previous entries for a deeper learning experience.
Not ideal for: Students needing graphing capabilities or a larger display for complex data visualization.
Bottom line: A versatile calculator that encourages exploration and understanding, perfect for students who want more than just calculations.
“A versatile calculator that encourages exploration and understanding, perfect for students who want more than just calculations.”
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Key Differences
The main difference lies in the complexity and usability of each calculator. The Casio fx-991EX excels in providing a broader range of functions, including advanced math, making it suitable for higher-level coursework. Its high-resolution display and QR code feature for quick access to tutorials add to its appeal for students tackling complex problems. The TI-30XS, by contrast, is streamlined for straightforward calculations, with a simpler interface and a lower price point. It’s ideal for students who want a reliable device for basic scientific functions without the need for advanced features or a larger display. In practice, this means students in advanced classes or college-level courses may prefer the Casio, while those in high school or requiring only fundamental functions might find the TI-30XS sufficient and more budget-friendly.Detailed Comparison
Display clarity (Casio fx-991EX wins — major)
The Casio fx-991EX provides a high-resolution, multi-line display, making it easier to read complex calculations, especially when working with fractions, roots, or multiple steps. The TI-30XS has a basic, single-line display that is less clear for complicated calculations but sufficient for simple tasks. The difference is major for students dealing with advanced problems, as clarity reduces errors and improves workflow.Functionality (Casio fx-991EX wins — major)
The Casio fx-991EX offers over 550 functions including calculus, matrix operations, and statistical analysis, making it highly versatile. The TI-30XS focuses on core scientific functions like exponents, roots, and basic algebra, with limited advanced options. For complex coursework, Casio’s functionality is a clear advantage; for basic use, TI-30XS’s limited features suffice.Ease of use (Texas Instruments TI-30XS wins — moderate)
The TI-30XS features a simple, straightforward button layout that beginners find accessible. The Casio fx-991EX, with its menu-driven interface and additional functions, requires a learning curve but becomes intuitive with practice. For students new to scientific calculators, TI-30XS is easier; experienced users benefit from Casio’s richer features.Build quality (Texas Instruments TI-30XS wins — minor)
Both models are durable, but the Casio fx-991EX has a slightly more robust feel, though it is bulkier. The TI-30XS’s slim design makes it more portable and resistant to everyday wear, but may feel less sturdy over time. Build quality is a minor but noticeable difference affecting long-term use.Battery life (Casio fx-991EX wins — moderate)
Both calculators use batteries, with the Casio fx-991EX boasting a longer battery life due to its power-efficient display and low-energy mode. The TI-30XS also offers decent battery life but may need more frequent replacements, especially with frequent use of advanced functions.Price (Texas Instruments TI-30XS wins — major)
The TI-30XS is significantly cheaper, making it accessible for students on a tight budget. The Casio fx-991EX costs more but provides more features and better display quality. The cost difference can influence decisions for students who only need basic functions or those willing to invest in a more capable device.Advanced features (Casio fx-991EX wins — major)
Casio’s model includes functions like calculus, derivatives, integrals, and QR code access for tutorials, suitable for higher-level courses. The TI-30XS is limited to basic scientific functions, fitting only for lower-level coursework. The more advanced features make Casio the choice for ambitious students.Portability (Texas Instruments TI-30XS wins — minor)
The TI-30XS’s slim, lightweight design makes it easier to carry around, especially for exams. The Casio fx-991EX, being bulkier, is slightly less portable but still manageable. Students prioritizing compactness should favor the TI-30XS.Casio fx-991EX: Pros and Cons
Pros:
- Wide range of functions including advanced calculus and statistics
- High-resolution display improves readability
- Includes QR code tutorials for quick learning
- Longer battery life
Cons:
- Higher price
- Bulkier and less portable
- Steeper learning curve due to complex features
Texas Instruments TI-30XS: Pros and Cons
Pros:
- Simple, intuitive interface suitable for beginners
- More affordable
- Lightweight and portable
- Adequate for basic coursework
Cons:
- Limited to core scientific functions
- Less suitable for advanced math courses
- Basic display may hinder complex calculations
Who Should Choose What
Choose Casio fx-991EX if:
- You are studying advanced math, calculus, or engineering courses requiring extensive functions
- You prefer a calculator with a clear display and additional features like QR tutorials
- Long battery life and robustness are priorities
Choose Texas Instruments TI-30XS if:
- You are a high school student or taking courses with basic scientific calculations
- Budget constraints are important
- You want a lightweight, easy-to-use device for everyday use