1. Introduction
The iPepul Scientific Calculator with Notepad is an innovative device designed to enhance learning and work efficiency. It integrates a full-function scientific calculator with a reusable digital notepad, allowing users to perform calculations and take notes simultaneously. This manual provides essential information for operating and maintaining your device.

Figure 1.1: The iPepul Scientific Calculator with Notepad in its open configuration, displaying both the calculator interface and the digital writing pad.
Key features include a 10-digit large LCD screen, a soft silicone keyboard, and an eye-protective blue matte LCD screen for the notepad. Its compact and lightweight design makes it highly portable, suitable for various environments from classrooms to offices.

Figure 1.2: Conceptual diagram illustrating how the iPepul device combines the functionalities of a traditional calculator, a notebook, and a pen into a single, integrated unit.
2. Setup
2.1. Battery Installation
Your iPepul Scientific Calculator requires two Lithium Metal button batteries (included). The battery compartments are designed for easy access without the need for screws.
- Locate the battery compartments on the back of the calculator unit.
- Gently slide open the battery covers.
- Insert the two button batteries, ensuring correct polarity (+/-).
- Close the battery covers securely.

Figure 2.1: Visual guide for replacing the button batteries. The battery compartments are easily accessible on the back of the calculator unit.
3. Operation
3.1. Scientific Calculator Functions
The calculator features a 10-digit LCD display and a comprehensive set of scientific functions. The soft silicone keyboard ensures comfortable and accurate input.
- Basic Operations: Perform addition, subtraction, multiplication, and division using the standard numeric and operator keys.
- Scientific Functions: Access functions such as trigonometry (sin, cos, tan), logarithms (log, ln), exponents (EXP), square roots (√), and more. Refer to the detailed operating instructions included in the box for specific key combinations and advanced functions.
- Display: The 10-digit LCD screen provides clear readability for all calculations.

Figure 3.1: Detailed view of the scientific calculator's keyboard and LCD screen, highlighting the various function buttons.
3.2. Digital Notepad Usage
The integrated notepad allows for convenient note-taking, sketching, or working out problems alongside your calculations. It utilizes a blue matte LCD screen designed to be gentle on the eyes.
- Writing: Use the included stylus to write directly on the notepad surface. The stylus is stored securely on the side of the device.
- Erasing: To clear the notepad, press the dedicated clear button located below the writing area. This feature allows for repeated use, reducing paper consumption and protecting personal privacy.

Figure 3.2: Illustration of the notepad's one-click erase function, emphasizing its role in privacy protection and paper reduction.

Figure 3.3: A user actively utilizing both the calculator and the digital notepad, showcasing the ability to write repeatedly without consuming paper.
3.3. Product Overview Video
Video 3.1: An official overview of the iPepul Scientific Calculator, demonstrating its key features and functionality. This video is provided by the manufacturer, iPepul.
4. Maintenance
4.1. Cleaning
To ensure the longevity and optimal performance of your calculator, clean it regularly:
- Use a soft, dry cloth to wipe the exterior surfaces.
- For the LCD screen and notepad surface, use a soft, lint-free cloth. Avoid abrasive materials or harsh chemical cleaners.
- Do not immerse the device in water or expose it to excessive moisture.
4.2. Battery Replacement
When the display becomes dim or the notepad's erase function is inconsistent, it may be time to replace the batteries. Refer to Section 2.1 for detailed battery installation instructions. The device uses two button batteries that can be replaced without tools.
5. Troubleshooting
If you encounter issues with your iPepul Scientific Calculator, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Calculator display is dim or blank. | Low or depleted batteries. | Replace the two button batteries (see Section 2.1). |
| Notepad writing is faint or not appearing. | Stylus not making proper contact or notepad battery low. | Ensure firm contact with the stylus. Replace batteries if issue persists. |
| Notepad content does not erase completely. | Low battery or temporary system glitch. | Press the clear button multiple times. If problem persists, replace batteries. Closing and reopening the calculator cover may also help. |
| Calculator buttons are sticky or double-register input. | Dust/debris under buttons or manufacturing tolerance. | Gently clean around the buttons. This can be a common characteristic of some calculators; try pressing keys firmly and deliberately. |
6. Specifications
| Feature | Detail |
|---|---|
| Product Dimensions | 6.5 x 3.27 x 0.63 inches |
| Item Weight | 4.2 ounces |
| Model Number | JSQ |
| Batteries | 2 Lithium Metal batteries (included) |
| Manufacturer | iPepul |
| Country of Origin | China |
| Color | Black |
| Calculator Type | Engineering/Scientific |
| Power Source | Battery Powered |
| Screen Size (Notepad) | 5.2 Inches |
| Visible Screen Diagonal | 6" / 14 cm |
7. Warranty and Support
7.1. Warranty Information
The iPepul Scientific Calculator with Notepad is covered by a 180-day replacement warranty from the date of purchase. This warranty covers manufacturing defects and ensures that your product functions as intended.
7.2. Return Policy
You may return the product for a refund or replacement within 30 days of purchase, subject to the retailer's return policy.
7.3. Customer Support
For any questions, technical assistance, or warranty claims, please contact iPepul customer support. We are committed to providing 24-hour after-sales support to ensure your satisfaction.
Contact information for iPepul customer support can typically be found on the product packaging or the official iPepul website.





