COMIX Desktop Calculator C-2031BK User Manual

Introduction

Welcome to the user manual for your COMIX Desktop Calculator, model C-2031BK. This calculator is designed for ease of use with a 12-digit display and large, comfortable keys, suitable for various calculations in office, home, or educational environments.

Setup

Power Source

The COMIX C-2031BK calculator operates on dual power: a solar panel and one AAA battery. The solar panel functions as an auxiliary power source and requires sufficient ambient light to operate. For optimal performance and a consistently clear display, it is highly recommended to install the included AAA battery.

Battery Installation

1. Locate the battery compartment on the back of the calculator.
2. Open the battery cover by sliding or lifting it.
3. Insert one AAA battery, ensuring correct polarity (+/-) as indicated inside the compartment.
4. Close the battery cover securely.

Operating Instructions

Key Functions Overview

Basic Operations

Perform standard arithmetic calculations:

• Addition: Press the [+] key.
• Subtraction: Press the [-] key.
• Multiplication: Press the [x] key.
• Division: Press the [÷] key.
• Equals: Press the [=] key to display the result of a calculation.

Clear Functions

• [C] (Clear): Clears the last entered number or calculation entry. Pressing it multiple times may clear the entire calculation.
• [CE] (Clear Entry): Clears the current numerical entry without affecting previous calculations or memory.
• [AC] (All Clear): Clears all entries, calculations, and memory, resetting the calculator to its initial state.

Memory Functions

• [M+] (Memory Plus): Adds the currently displayed number to the memory.
• [M-] (Memory Minus): Subtracts the currently displayed number from the memory.
• [MR] (Memory Recall): Recalls the value stored in memory to the display.
• [MC] (Memory Clear): Clears the memory, setting its value to zero.

Special Keys

• [GT] (Grand Total): Displays the grand total of all results obtained using the [=] key since the last [AC] press.
• [MU] (Mark Up): Used for profit margin calculations.
• [%] (Percent): Used for percentage calculations.
• [←] (Backspace): Deletes the last digit entered on the display.
• [00]: Enters two zeros simultaneously, useful for large numbers.

Features

12-Digit LCD Display

The calculator features a large, clear 12-digit LCD display, making it suitable for extensive calculations and ensuring easy readability of numbers and results.

Large Computer Keys

Equipped with large, responsive keys designed for comfortable and accurate input, reducing errors during rapid calculations and providing a tactile typing experience.

Dual Power Source

Operates using both solar power and a single AAA battery, ensuring reliable performance in various lighting conditions and providing continuous operation.

Maintenance

Cleaning

To clean the calculator, use a soft, dry cloth. Do not use liquid cleaners, solvents, or abrasive materials, as these can damage the display, keys, or casing.

Storage

Store the calculator in a cool, dry place away from direct sunlight and extreme temperatures. If storing for an extended period, remove the AAA battery to prevent potential leakage and damage to the device.

Troubleshooting

• Display is blank or dim:
  • Ensure the calculator is in a well-lit area for the solar panel to function effectively.
  • Check if the AAA battery is correctly installed and not depleted. Replace the battery if necessary.
• Incorrect calculations:
  • Verify that the correct keys are being pressed for your desired operation.
  • Clear all previous calculations using the [AC] key and re-enter the calculation.
  • Ensure memory functions are not inadvertently active (check for an 'M' indicator on the display). Clear memory with [MC] if needed.

Specifications

Warranty and Support

For warranty information, technical support, or any inquiries regarding your COMIX Desktop Calculator, please refer to the contact details provided with your purchase documentation or visit the official Comix website for further assistance.