Sharp EL-2135 12-Digit Electronic Desktop Calculator User Manual

1. Introduktion

This manual provides detailed instructions for the proper use and maintenance of your Sharp EL-2135 12-digit electronic desktop calculator. Designed for general purpose calculations, this lightweight and ergonomically designed calculator is ideal for both school and office environments. It features a clear 12-digit LCD display and operates efficiently with dual power sources.

2. Nøglefunktioner

• 12-cifret LCD-skærm: Provides clear and easy-to-read numerical output.
• Comfortable Desktop Size: Optimized dimensions for stable and convenient use on any desk.
• Elegant Gray Body: Durable ABS plastic construction with a professional aesthetic.
• Kvadratrodsfunktion: Dedicated button for quick square root calculations.
• Dobbelt strømkilde: Operates on both solar power and a lithium-ion battery, ensuring functionality even in low light conditions.

3. Opsætning

3.1 Tænd

The Sharp EL-2135 calculator utilizes a dual power system: solar and battery. It will automatically draw power from the solar cell when sufficient light is available. In dim lighting or darkness, the included lithium-ion battery will provide power. No manual power-on switch is typically required; the calculator activates upon light exposure or key press.

3.2 Batteriinstallation/udskiftning

The calculator comes with a lithium-ion battery pre-installed. If battery replacement becomes necessary:

1. Ensure the calculator is off or in a well-lit area to utilize solar power.
2. Find batterirummet på bagsiden af ​​enheden.
3. Åbn forsigtigt dækslet til rummet.
4. Remove the old battery and insert a new CR2032 lithium-ion battery, ensuring correct polarity (+/-).
5. Luk batterirummets dæksel forsvarligt.

Note: Dispose of used batteries according to local regulations.

4. Betjeningsvejledning

4.1 Grundlæggende aritmetiske operationer

Perform addition, subtraction, multiplication, and division using the dedicated keys:

• Tilføjelse (+): Indtast det første tal, tryk på +, enter the second number, press =.
• Subtraktion (-): Indtast det første tal, tryk på -, enter the second number, press =.
• Multiplikation (×): Indtast det første tal, tryk på ×, enter the second number, press =.
• Division (÷): Indtast det første tal, tryk på ÷, enter the second number, press =.

4.2 Specialfunktioner

• Kvadratrod (√): Enter a number, then press the √ key to calculate its square root.
• Procenttage (%): Bruges til procenttage beregninger. F.eksample, to calculate 10% of 200: Enter 200, press ×, indtast 10, tryk %.
• Grand Total (GT): Accumulates the results of all calculations performed after the last GT clear. Press GT for at vise den samlede sum.
• Mark-up/Mark-down (MU): Bruges til beregning af profitmargin.
• Ryd indtastning (CE): Clears the last entered number or operation without affecting previous calculations.
• Clear All (CA): Sletter alle indtastninger og beregninger og nulstiller lommeregneren.
• Hukommelse Plus (M+): Tilføjer den viste værdi til hukommelsen.
• Hukommelse Minus (M-): Trækker den viste værdi fra hukommelsen.
• Recall Memory (RM): Viser den værdi, der aktuelt er gemt i hukommelsen.
• Clear Memory (CM): Rydder hukommelsen.

4.3 Display

The 12-digit LCD display shows numbers clearly. If the result of a calculation exceeds 12 digits, an error indicator may appear, or the number may be displayed in scientific notation if supported.

5. Vedligeholdelse

5.1 Rengøring

Brug en blød, tør klud til at rengøre lommeregneren. Til genstridigt snavs, tør letampen the cloth with water or a mild, non-abrasive cleaner. Avoid using harsh chemicals, solvents, or abrasive materials, as these can damage the casing og display.

5.2 Opbevaring

Store the calculator in a cool, dry place away from direct sunlight and extreme temperatures. Prolonged exposure to heat or cold can affect battery life and electronic components. When not in use for extended periods, ensure it is stored in a manner that prevents accidental key presses.

6. Fejlfinding

• Skærmen er tom eller svag:
  • Ensure the calculator is in a well-lit area for solar power.
  • Check if the battery needs replacement. Refer to Section 3.2.
• Forkerte beregninger:
  • Tryk på CA (Clear All) button to reset the calculator.
  • Verify that you are entering numbers and operations correctly.
• Tasterne reagerer ikke:
  • Clean the keys and surrounding areas to remove any debris.
  • If the issue persists, the calculator may require professional servicing.

7. Specifikationer

8. Produktbilleder

9. Garanti og support

For warranty information, please refer to the documentation included with your purchase or contact your retailer. For technical support or service inquiries, please visit the official Sharp webwebstedet eller kontakt deres kundeserviceafdeling. Gem din købskvittering som købsbevis i tilfælde af garantikrav.