Introducció
The Casio fx-991CW is a high-performance scientific calculator designed for advanced mathematics. It features a high-resolution display that enhances visibility and allows for the display of more information, such as spreadsheets and 4x4 matrix calculations. This calculator is equipped with a comprehensive set of advanced functions, including integration, differential calculus, vector calculations, and inequality calculations, making it suitable for middle school, high school, and college-level math courses.
Figura 1: Frontal view of the Casio fx-991CW Advanced Scientific Calculator, showcasing its high-resolution display and key layout.
Característiques clau
The Casio fx-991CW offers a range of features to support complex mathematical computations:
- Visualització de llibres de text naturals: Equations, fractions, and symbols are displayed exactly as they appear in textbooks, aiding comprehension.
- High-Resolution 4-Tone Display: Enhanced screen with quad-tone shading improves visibility and cursor tracking.
- Memory & Math Catalog: Stores up to 9 variables persistently. Access 47 constants, 40 conversions, and advanced math functions.
- 540 Advanced Functions: Includes numeric integration and differentiation, 4x4 matrix operations, and spreadsheet-style data viewing.
- QR Functionality & Durable Design: Scan QR codes to graph results on ClassPad.net. Features rounded keys and a non-slip hard case.
Figure 2: Visual representation of the Casio fx-991CW's key features, highlighting its advanced capabilities and user-friendly design.
Configuració inicial
Font d'alimentació
The Casio fx-991CW calculator operates on both solar power and a single LR44 battery, which is included. The solar panel provides power in well-lit environments, while the battery ensures continuous operation in low-light conditions or when solar power is insufficient. This dual power system ensures the calculator is always ready for use.
Funda protectora
The calculator comes with a durable hard case designed to protect the display and keys from damage. To use the calculator, slide the case off. The case can be conveniently attached to the back of the calculator during use to prevent loss and provide a comfortable grip.
Figure 3: The Casio fx-991CW calculator shown with its protective hard case, which slides off for use and can be attached to the back.
Instruccions de funcionament
Operacions bàsiques
Per engegar la calculadora, premeu la tecla ON button. The display is clear and easy to read, showing equations and results in a natural textbook format. Input numbers and operations using the tactile buttons. The buttons are designed for smooth and comfortable use, ensuring accurate input.
Funcions avançades
The fx-991CW supports a wide array of advanced functions. Navigate through different modes using the CASA button and arrow keys to select options like Spreadsheet, Table, Statistics, Distribution, Equation, Inequality, Complex, and Base-N calculations. The CATÀLEG button provides access to a comprehensive list of mathematical functions, constants, and conversions.
Figure 4: A hand operating the Casio fx-991CW, demonstrating the clear display and intuitive menu navigation for various functions.
QR Functionality
A unique feature of the fx-991CW is its QR code generation capability. This allows users to generate a QR code from their calculation results or data. Scanning this QR code with a smartphone or tablet connected to the internet will display the results graphically on ClassPad.net, providing a visual representation of complex mathematical expressions.
Figure 5: Illustration of the QR code functionality, showing how the calculator can generate a QR code to visualize mathematical graphs on a connected device.
Especificacions tècniques
| Especificació | Valor |
|---|---|
| Dimensions del producte | 6.3 x 3 x 0.1 polzades |
| Pes de l'article | 3.35 unces |
| Número de model de l'article | FX-991CW |
| Bateries | Necessites 1 piles LR44 (incloses) |
| Font d'alimentació | Energia solar |
| Mida de la pantalla | 2.25 polzades |
| Tipus de calculadora | Enginyeria/Científic |
| Color | Negre |
| Fabricant | Casio |
Figure 6: Diagram illustrating the physical dimensions of the Casio fx-991CW calculator.
Cura i Manteniment
- Keep the calculator clean by wiping it with a soft, dry cloth. Avoid using abrasive cleaners or solvents.
- Store the calculator in its protective hard case when not in use to prevent scratches and damage.
- Avoid exposing the calculator to extreme temperatures, humidity, or direct sunlight for prolonged periods.
- Do not attempt to disassemble or repair the calculator yourself, as this may void the warranty and cause further damage.
Resolució de problemes
If you encounter issues with your Casio fx-991CW, consider the following common solutions:
- La pantalla està en blanc o té poca llum: Ensure the calculator is in a well-lit area for solar power. If the issue persists, the LR44 battery may need replacement.
- Els botons no responen: Premeu el botó RESET button (usually a small, recessed button on the back, requiring a thin object like a paperclip) to reset the calculator. Note that this will clear all memory.
- Resultats de càlcul incorrectes: Verify that you are in the correct mode for your calculation (e.g., DEG for degrees, RAD for radians). Check your input for any errors.
- La calculadora es bloqueja: Try turning the calculator off and then on again. If it remains frozen, perform a reset.
For more detailed troubleshooting or persistent issues, please refer to the comprehensive manual available on the Casio support weblloc.
Garantia i Suport
Informació de la garantia
Please refer to the warranty card included with your product packaging or visit the official Casio website for detailed warranty terms and conditions. Warranty coverage typically includes defects in materials and workmanship under normal use.
Atenció al client
For further assistance, technical support, or to access additional resources, please visit the official Casio support website. You can find FAQs, downloadable manuals, and contact information for customer service.
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