Introduction
This manual provides detailed instructions for the proper use, setup, and maintenance of your Casio DM-1200BM Desktop Calculator. Please read this manual thoroughly to ensure optimal performance and longevity of your device. Keep this manual for future reference.
Product Overview
The Casio DM-1200BM is a 12-digit desktop calculator designed for various financial and general calculations. It features a large, clear LCD display and a comprehensive set of keys for efficient operation.
This image displays the Casio DM-1200BM desktop calculator. It features a large 12-digit LCD display, a silver brushed metal finish, and a full keypad including numeric keys, arithmetic operators, and specialized function keys such as TAX+, TAX-, COST, SELL, MAR, M+, M-, MR, MC, GT, and percentage. The top right corner indicates 'DM-1200BM 12 DIGITS'.
Setup
Battery Installation/Replacement
The DM-1200BM calculator is battery-powered. If the display becomes dim or unresponsive, the battery may need replacement.
- Ensure the calculator is turned off.
- Locate the battery compartment cover on the back of the calculator.
- Remove the cover (you may need a small screwdriver).
- Carefully remove the old battery. Note its orientation.
- Insert a new battery (e.g., a standard button cell or AA battery, depending on the model's design) with the correct polarity (+/-).
- Replace the battery compartment cover securely.
- Press the ON/AC button to turn on the calculator and verify the display.
Note: Dispose of used batteries according to local regulations.
Operating Instructions
Basic Operations
- ON/AC (All Clear): Powers on the calculator and clears all values, including memory and settings.
- C (Clear Entry): Clears the last entered number or the current calculation entry without affecting previous calculations or memory.
- Numeric Keys (0-9, 00): Used to input numerical values.
- . (Decimal Point): Used to enter decimal values.
- +, -, ×, ÷ (Arithmetic Operators): Perform addition, subtraction, multiplication, and division.
- = (Equals): Completes a calculation and displays the result.
- +/- (Sign Change): Changes the sign of the displayed number (positive to negative, or negative to positive).
Advanced Functions
- TAX+ / TAX- (Tax Calculation):
To set the tax rate: Press RATE SET %, enter the tax rate (e.g., 5 for 5%), then press RATE SET % again.
To add tax: Enter amount, then press TAX+.
To subtract tax: Enter amount, then press TAX-.
- COST / SELL / MAR (Cost, Sell, Margin):
These keys are used for profit margin calculations. Enter two of the three values (Cost, Selling Price, Margin Percentage) to calculate the third.
Example: To find Selling Price if Cost is 100 and Margin is 20%:
- Enter 100, press COST.
- Enter 20, press MAR.
- Press SELL to display the selling price.
- M+ / M- / MR / MC (Memory Functions):
M+: Adds the displayed value to memory.
M-: Subtracts the displayed value from 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 calculations. Pressing GT displays the grand total. Pressing it again clears the grand total.
- % (Percentage): Used for percentage calculations. Example: 100 + 10% = 110.
- F CUT 5/4 (Decimal Selector): This slider switch controls the decimal point setting.
- F (Floating): Results are displayed with a floating decimal point.
- CUT: Truncates the result at the specified decimal place.
- 5/4: Rounds the result at the specified decimal place (round up if the next digit is 5 or greater, otherwise round down).
- 4 3 2 1 0 ADD2 (Decimal Place Selector): This slider switch sets the number of decimal places for calculations (0, 1, 2, 3, 4). ADD2 automatically adds two decimal places for currency calculations.
Maintenance
- Cleaning: Wipe the calculator with a soft, dry cloth. For stubborn dirt, use a cloth lightly dampened with water and a mild detergent, then wipe dry immediately. Avoid abrasive cleaners or solvents.
- Storage: Store the calculator in a cool, dry place away from direct sunlight and extreme temperatures.
- Battery Care: If the calculator will not be used for an extended period, remove the battery to prevent leakage and potential damage.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Display is blank or dim. | Low or dead battery. | Replace the battery as described in the "Setup" section. |
| Incorrect calculation results. | Incorrect decimal or rounding settings; incorrect key input. | Check the F CUT 5/4 and 4 3 2 1 0 ADD2 slider switches. Press ON/AC to clear all previous calculations and memory. Re-enter the calculation carefully. |
| Keys are unresponsive. | Battery issue; internal malfunction. | Replace the battery. If the problem persists, contact customer support. |
Specifications
- Brand: Casio
- Model: DM-1200BM
- Display: 12-Digit LCD
- Power Source: Battery Powered
- Calculator Type: Financial
- Color: Silver
- Item Weight: 9.3 ounces
Warranty and Support
For information regarding warranty coverage, technical support, or service, please refer to the warranty card included with your product or visit the official Casio website. Keep your purchase receipt as proof of purchase.
Official Casio Website: www.casio.com
