Sharp EL-377WB Large Pocket Calculator User Manual

Indledning

Welcome to the user manual for your Sharp EL-377WB Large Pocket Calculator. This guide provides detailed instructions on how to set up, operate, and maintain your calculator to ensure optimal performance and longevity.

The Sharp EL-377WB is a professional 10-digit calculator designed for everyday use, featuring a large LCD display and essential functions for various calculations, making it ideal for business, home, or school.

Produkt overview

The Sharp EL-377WB is a compact yet powerful calculator with a clear 10-digit LCD display. It operates on a twin power system, utilizing both solar power and battery backup for reliable performance in various lighting conditions.

Nøglefunktioner:

• 10-Digit Large LCD Display for easy readability.
• Twin Power Operation (Solar and Battery) for consistent performance.
• Automatic Tax Keys for quick tax calculations.
• Percent Key for percentage beregninger.
• Square Root Key for mathematical operations.
• Backspace Key for correcting input errors.
• Four-Key Independent Memory (M+, M-, RM, CM) for complex calculations.
• Clear Memory Key for resetting memory.

Figur 1: Forside view of the Sharp EL-377WB Large Pocket Calculator, showing the 10-digit LCD display and key layout.

Opsætning

Strømkilde

The Sharp EL-377WB calculator utilizes a twin power system, combining solar power with a battery backup for reliable operation.

• Solenergi: The calculator primarily operates using its solar cell, located above the display. Ensure adequate light exposure for optimal performance.
• Batteri-sikkerhedskopi: In low light conditions, the calculator automatically switches to battery power. The battery (LR1130) ensures continuous operation even when solar power is insufficient.

Figure 2: Illustration of the calculator's solar panel and the LR1130 battery, indicating its dual power source.

Indledende brug

No specific setup is required for initial use. The calculator is ready to operate once sufficient light is available for the solar cell or the battery is active. Simply press the C-CE key to turn it on and clear any previous entries.

Betjeningsvejledning

Grundlæggende operationer

• Power On/Clear All (CA): Tryk på C-CE key once to clear the last entry, or twice to clear all entries and memory. The "ON" function is integrated with this key.
• Indtastning af nummer: Use the number keys (0-9) to input values.
• Decimaltegnet: Tryk på . key for decimal values.
• Arithmetic Operations (+, -, ×, ÷): Use the respective operator keys for addition, subtraction, multiplication, and division.
• Lig med (=): Tryk på = key to display the result of a calculation.
• Backspace (→): Tryk på → tast for at slette det sidst indtastede ciffer.

Avancerede funktioner

• Percent (%): For at beregne procenttages, enter the base number, then the multiplication or division operator, then the percentage value, and finally the % nøgle.

  Example: To calculate 15% of 200: 200 × 15 % (Resultat: 30)

• Kvadratrod (√): Indtast nummeret, og tryk derefter på √ nøgle.

  Example: To calculate the square root of 81: 81 √ (Resultat: 9)
• Fortegnsændring (+/-): Tryk på +/- key to change the sign of the displayed number (positive to negative, or negative to positive).

Hukommelsesfunktioner

The calculator features a four-key independent memory system:

• Memory Clear (CM): Clears the memory content.
• Memory Recall (RM): Recalls the memory content to the display.
• Hukommelse Minus (M-): Subtracts the displayed value from the memory content.
• Hukommelse Plus (M+): Adds the displayed value to the memory content.

Tax Calculation Keys

The calculator includes dedicated keys for automatic tax calculations:

• Set Tax Rate (RATE SET): To set the tax rate, press TASTE SÆT, enter the tax percentage (e.g., 5 for 5%), then press TASTE SÆT igen.
• Recall Tax Rate (RATE RECALL): Trykke RATE RECALL til view den aktuelt fastsatte skattesats.
• Add Tax (+TAX): After entering a value, press +SKAT to add the calculated tax to the value.
• Subtract Tax (-TAX): After entering a value, press -SKAT to subtract the calculated tax from the value.

Opretholdelse

Rensning

To clean the calculator, gently wipe the surface with a soft, dry cloth. Do not use abrasive cleaners, solvents, or spray liquids directly onto the calculator, as this may damage the display or internal components.

Udskiftning af batteri

The Sharp EL-377WB uses an LR1130 button cell battery for backup power. If the display becomes dim or erratic in low light conditions, the battery may need replacement.

1. Sørg for, at lommeregneren er slukket.
2. Find batterirummet på bagsiden af ​​lommeregneren.
3. Carefully open the compartment cover (you may need a small screwdriver).
4. Fjern det gamle batteri, og isæt et nyt LR1130-batteri. Sørg for korrekt polaritet (+/-).
5. Luk batterirummets dæksel forsvarligt.

Fejlfinding

Fælles problemer og løsninger

Specifikationer

Figure 3: Dimensions of the Sharp EL-377WB calculator, showing its compact size for portability.

Garanti og support

For warranty information and customer support, please refer to the official Sharp website or contact their customer service department. It is recommended to keep your purchase receipt as proof of purchase for warranty claims.

You can find more information and support by visiting the official Sharp Store: Sharp Officiel Butik på Amazon

Vigtige sikkerhedsoplysninger

• Do not expose the calculator to extreme temperatures, direct sunlight for prolonged periods, or high humidity.
• Undgå at tabe lommeregneren eller udsætte den for kraftige stød.
• Keep out of reach of small children due to small parts (battery).
• Bortskaf batterier i henhold til lokale regler.
• Do not attempt to disassemble or modify the calculator.