Introduction
The NEWYES 991EX Scientific Calculator is an innovative device designed for students, engineers, teachers, and professional researchers. It combines a powerful scientific calculator with 552 functions and an integrated 6.5-inch writing tablet, allowing for seamless calculation and note-taking. This manual provides detailed instructions for setup, operation, maintenance, and troubleshooting to ensure optimal use of your calculator.
Setup
- Unpacking: Carefully remove the calculator and stylus from its packaging.
- Stylus Removal: The stylus (pen) is built into the left lower corner of the calculator. Gently slide it out. Please note that it might be a little tight to remove for the first time.
- Power Source: The calculator is powered by both a coin battery and a solar panel. It comes with a battery included, ensuring it is ready for immediate use. The dual power system helps prevent battery depletion.
- Initial Power On: Press the 'ON' button located on the calculator keypad to turn on the device.
Operating Instructions
Calculator Functions
The 991EX calculator offers 552 computer functions, covering a wide range of mathematical and scientific operations. Refer to the calculator's display and keypad for specific function keys.
- Basic Arithmetic: Use the number keys (0-9) and operation keys (+, -, ×, ÷, =).
- Advanced Functions: Access functions like fractions, statistics, complex number calculations, linear regression, standard deviations, and polar-rectangular conversions using the 'SHIFT' and 'ALPHA' keys in combination with other function keys.
- Decimal Format Setting: To specify the output result in decimal format, press "SHIFT" → "Function" → "1" → "2".
- Memory Functions: Utilize 'Ans' for the previous answer and 'M+' for memory addition.
- Clear Entries: Use 'DEL' to delete the last entry and 'AC' to clear all entries and reset the calculator.
Writing Tablet Usage
The integrated 6.5-inch LCD writing tablet allows you to take notes, draw diagrams, or perform scratch work alongside your calculations.
- Writing: Use the provided stylus to write directly on the tablet surface.
- Clearing Notes: To erase notes on the screen, ensure the 'Lock Switch' is in the unlocked position, then press the 'Clear Button' (often labeled 'Delete' or represented by a trash can icon).
- Storing Notes: To prevent accidental erasure of your notes, slide the 'Lock Switch' to the locked position. This will disable the clear function.
Maintenance
- Cleaning: Use a soft, dry cloth to clean the calculator and writing tablet surfaces. Avoid using abrasive cleaners or solvents.
- Battery Replacement: The calculator uses coin batteries. When the display becomes dim or unresponsive, it's time to replace the battery. Refer to the battery compartment for specific instructions and battery type.
- Storage: When not in use, fold the calculator so the LCD screen acts as a protective lid. Store it in a cool, dry place away from direct sunlight and extreme temperatures. Its foldable and portable design makes it easy to store in a pocket or bag.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Calculator does not turn on. | Low or depleted battery. | Ensure sufficient light for the solar panel or replace the coin battery. |
| Writing tablet does not clear. | Lock switch is engaged. | Turn the 'Lock Switch' to the unlocked position, then press the 'Clear Button'. |
| Stylus is difficult to remove. | New product, tight fit. | Gently slide the pen out from the left lower corner. It may loosen with repeated use. |
| Incorrect calculation results. | Incorrect mode or input format. | Check the calculator's mode settings (e.g., DEG/RAD) and ensure correct input syntax. Refer to the operating instructions for specific function usage. |
Specifications
| Feature | Detail |
|---|---|
| Brand | NEWYES |
| Model Number | 991EX (AB0607-EX) |
| Calculator Type | Scientific / Engineering |
| Functions | 552 Computer Functions (including fractions, statistics, complex numbers, linear regression, standard deviations, polar-rectangular conversions) |
| Max. Digits | 16 |
| Display Type | LCD |
| Writing Tablet Size | 6.5 inches |
| Power Source | Battery (Coin Batteries) & Solar Panel |
| Battery Included | Yes |
| Material | Plastic (Premium plastic keys) |
| Certification | CE |
| Dimensions (Folded) | Approximately 162mm x 81mm (estimated from open dimensions) |
| Dimensions (Open) | Approximately 162mm x 162mm |
| Weight | 0.28 kg (approximate) |
User Tips
- The dual power system (solar panel and coin battery) means you rarely have to worry about battery depletion, making it reliable for long study sessions or exams.
- The premium plastic keys are designed for sensitivity and accuracy, offering a better tactile experience compared to standard silicone keys.
- Utilize the lock switch on the writing tablet to save important notes or diagrams from accidental erasure.
- Its foldable design makes it highly portable, fitting easily into a pocket or small bag, perfect for on-the-go use.
Warranty and Support
For any questions, technical support, or warranty inquiries regarding your NEWYES 991EX Scientific Calculator, please contact the seller or manufacturer directly. Keep your purchase receipt as proof of purchase.
