NEWYES 991ES Max Scientific Calculator with Electronic Memo Pad Instruction Manual

1. Introduction

Thank you for choosing the NEWYES 991ES Max Scientific Calculator with Electronic Memo Pad. This device combines a powerful scientific calculator with 417 functions and a convenient 6.5-inch electronic memo pad, making it an ideal tool for students, engineers, and professionals. This manual will guide you through its features, setup, operation, and maintenance to ensure optimal performance and longevity.

2. Key Features

• 417 Functions: Comprehensive scientific functions covering electricity, civil engineering, construction, and advanced mathematics for university-level studies.
• Integrated Electronic Memo Pad: A 6.5-inch electronic memo pad allows you to record calculations, notes, or diagrams directly alongside your work.
• One-Key Clear & Lock Function: Easily erase the memo pad content with a single button press. The lock function prevents accidental erasure, preserving your notes. The memo pad supports approximately 50,000 rewrites.
• Type-C Charging & Solar Power: Supports convenient Type-C charging and direct power supply via solar energy, ensuring continuous operation without battery concerns. Solar power primarily functions as a direct power source and does not significantly charge the internal battery.
• 4-Line High-Precision Display: Features a high-precision LCD display with a 4-line natural textbook display, making complex equations and symbols clear and easy to read.
• Portable and Slim Design: Weighing only 150g with a smooth, curved, slim design (162mm x 165mm when open), it fits comfortably in your hand and is highly portable.
• Responsive Plastic Keys: Keys are made of plastic, offering a light touch and quick response, reducing fatigue during prolonged use.

Image: Overview of the NEWYES 991ES Max Scientific Calculator, highlighting its 417 functions and integrated electronic memo pad.

3. Setup

1. Initial Charge: Before first use, connect the calculator to a power source using the provided Type-C USB cable. The charging port is located on the side of the device. A red indicator light will show charging status.
2. Power On: Press the ON button to turn on the calculator.
3. Stylus Pen: The stylus pen is magnetically attached to the side of the memo pad for easy access and storage.

Image: Diagram illustrating the key components of the calculator, including the charging port, solar panel, and stylus pen.

4. Operating Instructions

The NEWYES 991ES Max offers 417 functions accessible via its intuitive keypad and 4-line display. Use the SHIFT and ALPHA keys to access secondary and tertiary functions printed above the buttons.

4.1 Basic Calculations (COMP Mode)

• Arithmetic Operations: Use +, -, ×, ÷ for addition, subtraction, multiplication, and division.
• Fractions: Input fractions using the a b/c key.
• Percentages: Use the % key for percentage calculations.
• Degree/Minute/Second (DMS) Calculations: Input and convert angles using the °’” key.

4.2 Function Calculations

• Trigonometric Functions: Use sin, cos, tan and their inverse functions (SHIFT + sin/cos/tan).
• Exponential and Logarithmic Functions: Use log, ln, e^x, 10^x.
• Integration and Differentiation: Access these functions via SHIFT + ∫dx and SHIFT + d/dx.
• Coordinate Conversion: Convert between rectangular and polar coordinates using Pol( and Rec(.

4.3 Complex Number Calculations (CMPLX Mode)

• Perform calculations with complex numbers, including conjugate, absolute value, and argument.

4.4 Statistical Calculations (STAT Mode)

• Supports single-variable and two-variable statistical calculations, including regression analysis.

4.5 Equation Solving (EQN Mode)

• Solve linear equations with multiple variables and quadratic/cubic equations.

4.6 Matrix and Vector Calculations (MATRIX/VECTOR Mode)

• Perform operations on matrices and vectors, such as addition, subtraction, multiplication, and determinants.

Image: A comprehensive list of the 417 functions supported by the calculator.

5. Electronic Memo Pad Usage

The integrated 6.5-inch electronic memo pad allows for quick note-taking and diagram drawing. It is pressure-sensitive, meaning the thickness of lines varies with writing pressure.

• Writing: Use the provided stylus pen to write or draw on the memo pad surface.
• One-Touch Clear: Press the One-Touch Clear button (located above the memo pad) to instantly erase all content.
• Lock Function: The memo pad features a lock switch (located on the side). When the switch is in the "Lock" position, the content on the memo pad cannot be erased, even if the clear button is pressed. This prevents accidental data loss. To erase, switch to the "Unlock" position.

Image: Demonstrations of the memo pad's one-touch clear, lock function, pressure sensitivity, and magnetic pen storage.

6. Charging and Power

The calculator supports two power methods:

• Type-C Charging: Connect the provided Type-C USB cable to the charging port on the side of the calculator and a power adapter (not included). The charging indicator will illuminate.
• Solar Power: The calculator is equipped with a solar panel. In sufficient light conditions, the solar panel can directly power the calculator. Note that solar power primarily acts as a direct power source and does not significantly charge the internal battery.

Image: Illustration of the Type-C charging port and solar panel for power.

7. Maintenance

• Cleaning: Use a soft, dry cloth to clean the calculator and memo pad surfaces. Do not use abrasive cleaners or solvents.
• Storage: Store the calculator in a cool, dry place away from direct sunlight and extreme temperatures.
• Handling: Avoid dropping the device or subjecting it to strong impacts. The foldable design helps protect the screens during transport.

Image: The calculator's foldable design for convenient portability and protection.

8. Troubleshooting

9. Specifications

Image: Visual representation of the calculator's 2-in-1 functionality and detailed specifications.

10. Warranty and Support

For warranty information and customer support, please refer to the product packaging or contact NEWYES customer service directly. Keep your purchase receipt as proof of purchase.