Sharp EL-1901

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Instruction Manual

Sharp Paperless Printing Desk Calculator EL-1901

1. Introduction

This manual provides comprehensive instructions for the operation and maintenance of your Sharp EL-1901 Paperless Printing Desk Calculator. Please read this manual thoroughly before using the calculator to ensure proper function and longevity.

Product Overview

The Sharp EL-1901 is a paperless printing calculator designed for efficiency and environmental consciousness. It combines the robust functionality of a traditional desktop calculator with an innovative digital display that eliminates the need for paper and ink. Its unique features include a large 12-digit primary LCD and a secondary 5-line scrolling LCD for reviewing past calculations.

Key Features

  • Paperless Operation: Eco-friendly design eliminates the need for paper rolls and ink ribbons.
  • Dual LCD Displays: Features a large 12-digit primary display and a secondary 5-line scrolling display for reviewing up to 300 previous entries.
  • Check and Correct Function: Easily modify and recalculate entries within the 300-line history for accuracy.
  • Full-Size Keyboard: Includes dedicated keys for tax calculations (TAX+, TAX-), cost/sell/margin (COST, SELL, MGN), grand total (GT), backspace, and memory functions (M+, M-, M*, M/).
  • Quiet and Fast Operation: Provides instant results without the noise associated with traditional printing calculators.
  • AC Powered: Designed for continuous use with an included AC adapter.

2. Setup

Powering the Calculator

The Sharp EL-1901 calculator is primarily powered by an AC adapter. Locate the AC adapter port on the side or rear of the calculator and plug in the provided adapter. Connect the adapter to a standard electrical outlet.

For backup or memory retention, the calculator also requires 1 CR2032 battery. Ensure this battery is installed correctly in its compartment, typically located on the underside of the unit, to maintain settings and memory during power interruptions or when the AC adapter is disconnected.

Sharp EL-1901 Paperless Printing Desk Calculator front view

Figure 2.1: Front view of the Sharp EL-1901 calculator, showing the main display and secondary scrolling display.

3. Operating Instructions

Basic Operations

To turn the calculator ON, press the ON/OFF button. The main 12-digit display will illuminate. The secondary 5-line display will show previous entries or be blank if reset.

  • Number Entry: Use the numeric keypad (0-9, 00, .) to enter values.
  • Arithmetic Operations: Use the + (addition), - (subtraction), x (multiplication), and ÷ (division) keys. Press = to calculate the result.
  • Clear Entry/Clear All: The C/CE key clears the last entry. Pressing it twice typically clears all entries and resets the calculation.
  • Backspace: Use the ← key to delete the last digit entered.
  • Change Sign: Use the +/- key to change the sign of the displayed number.

Paperless Printing and Scrolling Display

The secondary 5-line LCD acts as your digital "paper tape," displaying up to 300 lines of previous calculations. Use the ▲ (up) and ▼ (down) arrow keys to scroll through your entry history.

Close-up of Sharp EL-1901 displays

Figure 3.1: Close-up view of the calculator's main 12-digit display and the secondary 5-line scrolling display.

Check and Correct Function

This feature allows you to review and edit past entries. While viewing the history on the secondary display:

  • Use ▲ and ▼ to navigate to the entry you wish to correct.
  • Press the CORRECT key. Enter the new value.
  • Press INSERT to add a new line before the selected entry, or DELETE to remove the selected entry.
  • The calculator will automatically recalculate the total based on your changes.
  • To clear all entries from the secondary display, press the DELETE ALL key.

Video 3.1: Official product video demonstrating the Sharp EL-1901 Paperless Printing Calculator, highlighting its check and correct function and dual displays.

Special Functions

  • Cost/Sell/Margin (COST, SELL, MGN): These keys simplify profit margin calculations. Enter any two variables (cost, selling price, or margin percentage), and the calculator will automatically compute the third.
  • Tax Keys (TAX+, TAX-): Use these keys for quick tax calculations. Set the tax rate using the RATE SET button.
  • Grand Total (GT): Accumulates the results of multiple calculations. Press GT to display the grand total.
  • Memory Keys (M+, M-, M*, M/): Store and recall values from memory.
    • M+: Adds the displayed value to memory.
    • M-: Subtracts the displayed value from memory.
    • M*: Multiplies the displayed value with memory.
    • M/: Divides the displayed value with memory.
    • RM/CM: Recalls memory content / Clears memory content.
  • Rounding Keys (ROUND, DEC): Adjust rounding settings for calculations.

4. Maintenance

Cleaning

To clean the calculator, use a soft, dry cloth. For stubborn dirt, slightly dampen the cloth with water or a mild, non-abrasive cleaner. Do not use strong solvents or abrasive materials, as they may damage the surface or displays.

Battery Replacement

The calculator uses one CR2032 battery for memory backup. If the display shows erratic behavior or memory functions are unreliable when the AC adapter is disconnected, the battery may need replacement.

  1. Ensure the calculator is turned off and disconnected from the AC power.
  2. Locate the battery compartment on the underside of the calculator.
  3. Open the compartment cover (you may need a small screwdriver).
  4. Remove the old CR2032 battery and insert a new one, observing the correct polarity (+/-).
  5. Close the battery compartment cover securely.

5. Troubleshooting

If you encounter issues with your Sharp EL-1901 calculator, please refer to the following common problems and solutions:

ProblemPossible CauseSolution
Calculator does not turn on or respond to key presses.No power, loose AC adapter connection, or internal malfunction.
  • Ensure the AC adapter is securely plugged into both the calculator and a working electrical outlet.
  • Try plugging the AC adapter into a different outlet.
  • Press the RESET button (usually a small recessed button requiring a pointed object like a pen tip).
  • If the issue persists, contact customer support.
Secondary display (scrolling history) is blank or not updating.Display cleared, or a temporary software glitch.
  • Ensure you have performed calculations; the display will be blank if no entries have been made or if it was recently cleared.
  • Press the ▲ or ▼ keys to scroll.
  • Perform a soft reset by pressing the RESET button.
Incorrect calculation results.Incorrect entry, incorrect function used, or rounding settings.
  • Use the Check and Correct function to review and modify entries.
  • Verify rounding settings using the ROUND and DEC keys.
  • Ensure correct order of operations for complex calculations.

6. Specifications

  • Model: EL-1901
  • Brand: Sharp
  • Product Dimensions: 11.02 x 8.27 x 3.15 inches
  • Item Weight: 1.94 pounds
  • Power Source: AC Adapter
  • Battery: 1 x CR2032 (for memory backup)
  • Screen Size: 4 Inches (primary display)
  • Display Type: 12-Digit LCD Primary, 5-Line Scrolling LCD Secondary
  • Color: White

7. Warranty and Support

For warranty information, please refer to the documentation included with your purchase or visit the official Sharp Calculators website. If you require technical assistance or have questions not covered in this manual, please contact Sharp customer support.

Official Sharp Calculators Website: www.sharpcalculators.com

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