Dexin DM-1200V 12-Digit Electronic Calculator User Manual

1. Introduction

Thank you for choosing the Dexin DM-1200V 12-Digit Electronic Calculator. This manual provides detailed instructions for the proper setup, operation, and maintenance of your calculator. Please read this manual thoroughly to ensure optimal performance and longevity of your device.

2. Product Overview

The Dexin DM-1200V is a versatile 12-digit electronic calculator designed for home, office, and school use. It features a clear LCD display, durable construction, and essential mathematical functions.

Key Features:

• 12-Digit LCD Display: Provides clear and easy-to-read results.
• Multifunctional: Capable of performing basic and advanced mathematical calculations.
• Portable Design: Compact and lightweight, suitable for on-the-go use.
• Durable Construction: Built for reliability and extended use.
• Two-Way Power: Operates using both solar power and battery backup.

Calculator Components:

Familiarize yourself with the main components of your Dexin DM-1200V calculator:

This image displays the calculator's front, highlighting the large LCD screen at the top, the 'DEXIN BST DM-1200V ELECTRONIC CALCULATOR' branding, and the 'TWO WAY POWER' indicator. Below the display, the 'Big Display' text is visible. The main body features a standard numeric keypad (0-9, decimal point, 00) and various function keys including arithmetic operations (+, -, ×, ÷), percentage (%), square root (√), memory functions (MU, MC, MR, M-, M+), and clear/on/off buttons (CE/C, ON/AC, OFF).

This angled view provides a perspective of the calculator's profile, emphasizing its compact and sleek design with curved edges. The key layout and display are clearly visible, demonstrating the ergonomic arrangement of buttons for ease of use. The two-tone black and silver finish is also prominent.

This close-up image focuses on the upper section of the calculator, specifically the LCD display and the branding. The 'DEXIN BST DM-1200V ELECTRONIC CALCULATOR' text is sharply defined, along with the 'TWO WAY POWER' and '12 DIGIT' indicators. The large, clear display area is prominent, designed for easy readability of numerical outputs.

3. Setup

Power Source:

The Dexin DM-1200V calculator utilizes a two-way power system, combining solar power with battery backup for reliable operation.

• Solar Power: The calculator will automatically draw power from ambient light when sufficient light is available.
• Battery Power: For low-light conditions or when solar power is insufficient, the calculator switches to battery power.

Battery Installation/Replacement:

While the calculator is designed for long battery life, you may need to replace the battery eventually. The battery compartment is typically located on the back of the unit.

1. Gently slide open the battery compartment cover on the back of the calculator.
2. Remove the old battery (if applicable).
3. Insert a new compatible battery, ensuring correct polarity (+ and - terminals).
4. Close the battery compartment cover securely.

4. Operating Instructions

This section outlines the basic and advanced functions of your Dexin DM-1200V calculator.

Basic Operations:

• ON/AC (On/All Clear): Press to turn on the calculator or clear all entries and memory.
• 0-9, . (Numeric Keys, Decimal Point): Used to input numbers and decimal values.
• + (Addition): Adds the next number to the current total.
• - (Subtraction): Subtracts the next number from the current total.
• × (Multiplication): Multiplies the current number by the next number.
• ÷ (Division): Divides the current number by the next number.
• = (Equals): Displays the result of the calculation.
• CE/C (Clear Entry/Clear): Press once to clear the last entry. Press twice to clear the entire calculation without clearing memory.
• OFF (Power Off): Press to turn off the calculator.

Advanced Functions:

• % (Percentage): Used for percentage calculations. For example, to calculate 10% of 200, enter 200 × 10 %.
• √ (Square Root): Calculates the square root of the displayed number.
• +/- (Sign Change): Changes the sign of the displayed number (positive to negative, or negative to positive).
• MU (Mark Up): Used for profit margin calculations.
• M+ (Memory Plus): Adds the displayed value to the memory.
• M- (Memory Minus): Subtracts the displayed value from the memory.
• MR (Memory Recall): Recalls the value stored in memory to the display.
• MC (Memory Clear): Clears the value stored in memory.
• GT (Grand Total): Accumulates the results of all calculations. Pressing GT will display the grand total.
• EX (Exchange/Correction): This key may function as a correction key or an exchange key depending on the specific model variant. Typically used to correct the last entered digit or swap values.

5. Maintenance

Proper care and maintenance will extend the life of your calculator.

• Cleaning: Use a soft, dry cloth to clean the calculator's exterior. Do not use abrasive cleaners, solvents, or spray directly onto the device.
• Storage: Store the calculator in a cool, dry place away from direct sunlight and extreme temperatures.
• Avoid Impact: Protect the calculator from drops and impacts, which can damage internal components or the display.
• Battery Care: If the calculator will not be used for an extended period, consider removing the battery to prevent leakage.

6. Troubleshooting

If you encounter issues with your Dexin DM-1200V calculator, refer to the following common problems and solutions:

• Display is blank or dim:
  • Ensure sufficient light for solar power.
  • Check the battery. Replace if necessary.
  • Press the ON/AC button to turn on the calculator.
• Incorrect calculation results:
  • Press ON/AC to clear all previous entries and memory, then re-enter the calculation.
  • Ensure correct key presses and order of operations.
• Keys are unresponsive:
  • Clean around the keys to remove any debris.
  • Ensure the calculator is powered on.

If problems persist after attempting these solutions, please contact customer support.

7. Specifications

The following are the technical specifications for the Dexin DM-1200V calculator:

8. Warranty and Support

For warranty information or technical support, please refer to the documentation provided at the time of purchase or contact your retailer. Dexin is committed to providing quality products and customer satisfaction.

Please retain your proof of purchase for any warranty claims.