1. Introduction
This manual provides detailed instructions for the operation and maintenance of your Sharp EL-1501 Compact Cordless Paperless Printing Calculator. This device is designed to combine the functionality of a desktop calculator with the unique features of a paperless printing calculator, allowing for efficient and accurate calculations without the need for paper printouts.
The EL-1501 features a 12-digit main display and a five-line secondary LCD for reviewing up to 300 previous entries. Its cordless, battery-operated design ensures portability and convenience.

Figure 1: Front view of the Sharp EL-1501 Paperless Printing Calculator.
2. Setup
The Sharp EL-1501 calculator is designed for cordless operation, powered by batteries. Follow these steps to prepare your calculator for first use:
- Battery Installation: The calculator requires 4 AA batteries. These batteries are included with your purchase. Locate the battery compartment on the underside of the calculator. Open the compartment cover, insert the batteries, ensuring correct polarity (+/-), and then close the cover securely.
- Power On: Press the ON/C.CE button located on the bottom left of the keypad to turn on the calculator. The display should illuminate.
- Initial Display Check: Verify that the 12-digit main display and the 5-line scrolling LCD are functioning correctly.

Figure 2: The Sharp EL-1501 calculator ready for use on a desk.
3. Operating Instructions
The Sharp EL-1501 operates with printing calculator logic, offering a range of functions for various calculations. Below are instructions for common operations:
3.1 Basic Operations
- Number Entry: Use the numeric keypad (0-9) to enter numbers.
- Arithmetic Operations: Use the +, -, ×, and ÷ keys for addition, subtraction, multiplication, and division, respectively.
- Equals: Press the = key to display the result of a calculation.
- Clear Entry/Clear All: The C.CE key clears the last entered number or the entire calculation depending on the context.
- Backspace: Use the ← key to delete the last digit entered.
3.2 Advanced Functions
- Cost/Sell/Margin (CSM): These dedicated keys (COST, SELL, MGN) simplify profit margin calculations. Enter any two variables, and the third will be automatically calculated.
- To calculate SELL price: Enter COST, press COST, enter MARGIN %, press MGN, then press SELL.
- To calculate COST: Enter SELL price, press SELL, enter MARGIN %, press MGN, then press COST.
- To calculate MARGIN %: Enter COST, press COST, enter SELL price, press SELL, then press MGN.
- Tax Keys: Use TAX+ and TAX- for quick tax calculations. Set the tax rate using the RATE SET function.
- Memory Functions: The calculator includes a four-key memory (M+, M-, RM, CM) for storing and recalling values.
- Grand Total (GT): The GT key accumulates the results of calculations and displays the grand total.
- Rounding and Decimal Settings: Adjust rounding and decimal places using the dedicated switches/buttons.
- Scrolling Function: The 5-line secondary LCD allows you to scroll back and forth through up to 300 previous entries using the arrow keys (▲, ▼).

Figure 3: Key functions including Cost/Sell/Margin and Scrolling Function.

Figure 4: Overview of key features such as Automatic Tax Keys, Rounding Switch, Decimal Switch, Grand Total Function, 4 Key Memory, Backspace Key, and Percent Key.
4. Maintenance
Proper care and maintenance will extend the life of your Sharp EL-1501 calculator:
- Cleaning: Use a soft, dry cloth to clean the exterior of the calculator. For stubborn dirt, slightly dampen the cloth with water or a mild, non-abrasive cleaner. Avoid using harsh chemicals, solvents, or abrasive materials, as these can damage the casing or display.
- Battery Replacement: When the display becomes dim or the calculator functions erratically, it is time to replace the batteries. Always replace all 4 AA batteries at the same time with new ones to ensure optimal performance. Dispose of old batteries according to local regulations.
- Storage: Store the calculator in a cool, dry place away from direct sunlight, extreme temperatures, and high humidity. If storing for an extended period, it is recommended to remove the batteries to prevent leakage.
- Handling: Avoid dropping the calculator or subjecting it to strong impacts, as this can damage internal components or the display.
5. Troubleshooting
If you encounter issues with your Sharp EL-1501, refer to the following common troubleshooting tips:
| Problem | Possible Cause | Solution |
|---|---|---|
| Calculator does not turn on. | Dead or incorrectly installed batteries. | Check battery polarity. Replace all 4 AA batteries with new ones. |
| Display is dim or flickering. | Low battery power. | Replace all 4 AA batteries. |
| Incorrect calculation results. | Incorrect input, incorrect mode setting, or memory error. | Clear the calculation using C.CE. Re-enter the calculation carefully. Check decimal and rounding settings. Clear memory if necessary. |
| Scrolling display not working. | No history to scroll through, or feature not activated. | Perform some calculations to generate history. Ensure you are using the correct arrow keys. |
If the problem persists after trying these solutions, please refer to the official user manual PDF linked in the support section or contact Sharp customer support.
6. Specifications
Key specifications for the Sharp EL-1501 Paperless Printing Calculator:
- Model Number: 8541735555 (EL-1501)
- Display: 12-digit main LCD, 5-line scrolling secondary LCD
- Power Source: 4 AA batteries (included)
- Dimensions (L x W x H): 9 x 5.9 x 2.4 inches (approximately)
- Item Weight: 1.1 pounds
- Functions: Cost/Sell/Margin, Tax Keys, 4-Key Memory, Grand Total, Rounding, Decimal Selector, Percent, Sign Change, Backspace.
- Color: White
- First Available: April 18, 2019

Figure 5: Approximate dimensions of the Sharp EL-1501 calculator.
7. Warranty and Support
For detailed warranty information and further support, please refer to the official documentation provided by Sharp.
- Official User Manual: A comprehensive user manual in PDF format is available for download. Download User Manual (PDF)
- Manufacturer Support: For technical assistance, service, or warranty claims, please visit the official Sharp website or contact their customer service department.





