Casio ClassWiz Scientific Calculators
Model Series: fx-82CW, fx-85CW, fx-991CW
Tagline: Boost Your Curiosity
Introduction
Casio's ClassWiz series offers advanced scientific calculators designed for optimal learning and ease of use. The calculators, including the fx-82CW, fx-85CW, and fx-991CW models, come with a protective plastic cover, ensuring durability and portability. This series combines intuitive design with powerful functionality to support users in their academic and professional pursuits.
The calculators are powered by AAA batteries (fx-82CW) or solar cells and batteries (fx-85CW, fx-991CW), offering an estimated battery life of 2 years with typical usage.
Image: A visual comparison of the fx-82CW, fx-85CW, and fx-991CW calculators, highlighting their sleek design and the Casio ClassWiz branding.
Key Features and Model Comparison
The ClassWiz calculators share a core set of functionalities, with the fx-991CW offering expanded capabilities.
Main Functions (All ClassWiz CW Models)
- Variable storage (9 variables)
- Prime factorization
- Random number generation
- Coordinate transformations
- Power calculations
- Trigonometric functions
- Fraction calculations
- Combinations, permutations, and multiplication principle
- Value tables for functions f(x) and g(x)
- Thousands and decimal separators
- List-based statistical calculations (standard deviation, regression analysis for up to 2 variables)
- QR code functionality for data sharing and visualization
Additional Functions (fx-991CW Only)
- Spreadsheet application
- Numerical integration and differentiation
- Equation solver (including polynomial and general equation solvers)
- Complex number calculations
- Calculations with different number bases
- Matrix and vector calculations
- Scientific constants and unit conversions
- Statistical distributions (binomial, normal, Poisson)
- Solvers for 2nd, 3rd, and 4th-degree polynomial equations
- Balance calculations
- Prefixes for units
Specifications Comparison
| Specification | fx-82CW | fx-85CW | fx-991CW |
|---|---|---|---|
| Power Source | AAA x 1 (R03) | Solar cell & battery (LR44 x 1) | Solar cell & battery (LR44 x 1) |
| Estimated Battery Life | 2 years* | 2 years* (LR44 x 1) | 2 years* (LR44 x 1) |
| Dimensions (H x W x D mm) | 13.8 x 77 x 162 | 10.7 x 77 x 162 | 10.7 x 77 x 162 |
| Weight (g) | 100 | 100 | 95 |
| Material | Hard plastic protective cover | Hard plastic protective cover | Hard plastic protective cover |
| Display Resolution | 192 x 63 pixels | 192 x 63 pixels | 192 x 63 pixels |
| Digits (Mantissa + Exponent) | 10 + 2 | 10 + 2 | 10 + 2 |
| Calculation Accuracy | 23 | 23 | 23 |
| Icon-based Main Menu | Yes | Yes | Yes |
| Display Type | 4-line, grey screen with adjustable contrast | 4-line, grey screen with adjustable contrast | 4-line, grey screen with adjustable contrast |
| Web/QR Code | Yes | Yes | Yes |
| Spreadsheet Application | No | No | Yes |
| Statistics Application | Yes | Yes | Yes |
| Statistical Indicators | Yes | Yes | Yes |
| Q1/Q3 Median | Yes | Yes | Yes |
| Standard Normal Distribution | Yes | Yes | Yes |
| Frequency | Yes | Yes | Yes |
| Sort Function | Yes | Yes | Yes |
| Distribution Calculations | No | No | Yes |
| Table of Function Values | Yes | Yes | Yes |
| Equation Solving | Linear systems, Polynomials | Linear systems, Polynomials | Linear systems, Polynomials (up to 3rd degree), General Solver |
| Complex Number Calculations | No | No | Yes |
| Base-N Calculations | No | No | Yes |
| Matrix Calculations | No | No | Yes |
| Vector Calculations | No | No | Yes |
| f(x) Button Functionality | Store/recall functions | Store/recall functions | Store/recall functions |
| Answer Format | Exact/Approximate, Fraction/Mixed | Exact/Approximate, Fraction/Mixed | Exact/Approximate, Fraction/Mixed |
| Prime Factorization | Yes | Yes | Yes |
| Coordinate Conversion | Rectangular <-> Polar | Rectangular <-> Polar | Rectangular <-> Polar |
| Function Analysis | Numerical Differentiation/Integration | Numerical Differentiation/Integration | Numerical Differentiation/Integration |
| Hyperbolic Functions | Yes | Yes | Yes |
| Prefixes | Yes | Yes | Yes |
| Scientific Constants | No | No | Yes |
| Unit Conversions | No | No | Yes |
| Getting Started Guide | Yes (via manual) | Yes (via manual) | Yes (via manual) |
| Auto Power Off | Yes | Yes | Yes |
| Undo Function | Yes | Yes | Yes |
* Estimated 1 hour of daily use.
Calculator Applications
Easily select the desired application from the home screen using the user-friendly icon-based menu. Navigate using the arrow keys and confirm your selection with the OK or EXE button.
Image: A screenshot of the Casio calculator's home screen showing various application icons like Spreadsheet, Calculate, Statistics, Table, Equation, and Math Box.
Spreadsheet
Ideal for studying statistics and recursive sequences. The table supports up to 5 columns and 45 rows, accommodating a maximum of 170 data elements.
Image: A screenshot of the Spreadsheet application showing data entry and a calculation like "=Mean(B1:B20)".
Calculate
Suitable for all types of mathematical calculations.
Image: A screenshot showing a calculation being performed, e.g., "2+3+15".
Statistics
Facilitates statistical and regression analysis.
Image: A screenshot displaying statistical results like sum (Σx), mean (x̄), and standard deviation (σx).
Table
Create a table of function values for one or two function expressions within a specified range. Users can input individual variable values directly into the table rows.
Image: A screenshot of the Table application showing a table with columns for 'x' and 'f(x)' values.
Equation
Handles equation systems, polynomial equations, and offers a general numerical equation solver.
Image: A screenshot of the Equation application showing an equation or system of equations being solved.
Math Box
Simulates probabilities for events like rolling a die or flipping a coin, supporting 1-3 items and up to 250 repetitions.
Image: A screenshot of the Math Box application showing simulation results, e.g., "Attempts: 5", "Same Result: Off".
Note: Functionality may vary slightly from final product images. Unless otherwise stated, functions are available on all ClassWiz CW calculator models.
Variables and Functions
Defined functions can be utilized across all applications for efficient workflow.
Variables
Store values in various positions and use them in calculations. The variable key ?️ ([Variable Key]) opens a view displaying stored values for variables A, B, C, D, E, F, x, y, and z.
Using the Variable Key:
- View saved values.
- Store new values (e.g.,
A = 2.5 + Ans). - Use saved values in all applications (e.g.,
A + B).
Image: A screenshot showing variable assignments like A=5, B=1, C=3.14159265, etc.
Functions
Save functions as f(x) and g(x). Pressing the function key allows you to enter function expressions and recall them for use in different applications.
Examples:
- Define functions:
Define f(x) = 2x² + 3,Define g(x) = 3f(x) - Create a value table using defined functions.
- Calculate function values (e.g.,
f(2) + g(2)). - Use functions in calculations.
Image: A screenshot demonstrating function definition and usage in calculations or table generation.
Index (CATALOG)
The CATALOG ? ([Catalog]) lists commands, functions, and symbols relevant to the current application. Always use the CATALOG to find the correct command.
Intuitive and User-Friendly Design
Casio's ClassWiz calculators are designed for ease of use and efficient operation.
Design and User Interface
Clear Display in Four Shades of Gray: Different shades of gray enhance input clarity by visually distinguishing the active input field.
Image: A calculator screen showing a calculation with a darker, highlighted input field.
Cursor Controls Make Operation Easier: Navigation using arrow, OK, and undo keys is intuitive, mirroring natural user interaction.
Image: Close-up of the calculator's navigation buttons (arrow keys, OK).
Button Shapes Reduce Misprints: Slightly convex buttons ensure comfortable and accurate key presses from various angles.
Image: Close-up of the calculator's keypad, highlighting the button texture.
Simple Function Layout
- Frequently used functions are readily accessible.
- Cursor controls are color-coded for clear distinction from input buttons.
- The SHIFT key unlocks secondary functions, clearly indicated above the buttons.
Image: A calculator keypad showing primary and secondary (SHIFT) functions.
A Natural Textbook-Like Display
Fractions, powers, logarithms, and mathematical formulas are displayed in a format familiar from textbooks, aiding comprehension and learning.
Image: A calculator screen displaying a complex fraction or mathematical formula, similar to textbook notation.
Icon-Based Menu
The icon-based main menu provides a clear and intuitive interface, allowing for quick browsing and selection of applications.
Image: A calculator's main menu displaying various application icons.
Displays Variables and Statistical Calculations
Variables and statistical calculation results can be viewed in list format for easy overview.
Image: A screenshot showing lists of variables and statistical data.
Fast Calculations
Efficient calculation algorithms ensure a smooth and responsive user experience.
Visualization with QR Code
Generate QR codes directly from the calculator's applications. This allows you to view diagrams and other graphical data on your smart device for further analysis.
Image: A calculator screen displaying a QR code generation option, alongside a smartphone displaying a graph generated from the calculator.
How to Use:
- Enter content or perform calculations.
- Generate and scan the QR code using your smart device.
- Analyze the resulting graph or data on your device.
Casio Emulator for ClassPad.net: An educational tool for teachers, the ClassWiz Emulator is available on ClassPad.net, functioning directly in web browsers without installation. It allows teachers to create shareable materials and plan lessons. Teachers can obtain a free access code by emailing larare-support@casio.de. Visit https://classpad.net/.
Calculator in Mobile: Activate the ClassWiz CW calculator app on your mobile or tablet using the QR code. Check local Casio websites for news on upcoming iOS and Android app releases.
For more information, visit https://www.casio-skolraknare.se/.
