Sharp EL-145T BL Calculator User Manual

1. Introdução

This manual provides detailed instructions for the proper use and maintenance of your Sharp EL-145T BL 14-digit desktop calculator. Designed for office tasks, this calculator features tax calculation, percentage calculation, root calculation, and a 4-key memory system. It operates using both solar power and a backup battery, ensuring reliable performance.

Please read this manual thoroughly before using the calculator to ensure optimal performance and longevity.

2. Informações de segurança

• Do not expose the calculator to direct sunlight for extended periods or to extreme temperatures.
• Avoid dropping the calculator or subjecting it to strong impacts.
• Mantenha a calculadora longe de água e outros líquidos.
• Do not attempt to disassemble or modify the calculator. Refer all servicing to qualified personnel.
• Descarte as baterias de acordo com os regulamentos locais.

3. Produto acabadoview

The Sharp EL-145T BL is a compact and efficient 14-digit desktop calculator. Its angled LCD display enhances readability, making it suitable for various calculations.

Figura 1: Frente view of the Sharp EL-145T BL calculator, showing the 14-digit display, solar panel, and key layout. The calculator features a black body with blue accents.

Principais características:

• 14-digit angled LCD display for clear viewindo.
• Dual power source: Solar and battery (1 x LR-54/LR44).
• Dedicated tax calculation keys (+TAX, -TAX, RATE SET, RATE RECALL).
• Percentualtage calculation function (%).
• Square root calculation (√).
• 4-key memory functions (M+, M-, RM, CM).
• Clear Entry (CE) and All Clear (CA/C) keys.

Componentes:

The calculator consists of a main unit with a display panel, a solar panel, and a keypad. The keypad includes numeric keys (0-9, .), arithmetic operation keys (+, -, ×, ÷, =), and special function keys.

Figura 2: The Sharp EL-145T BL calculator positioned on a wooden desk, demonstrating its compact size and suitability for office environments. A highlighter and sticky note are visible nearby.

4. Configuração

Fonte de energia:

The EL-145T BL calculator is designed for dual power operation:

• Energia solar: The calculator primarily operates on solar power when sufficient light is available. Ensure the solar panel (located above the display) is exposed to light.
• Potência da bateria: A backup battery (1 x LR-54 or LR44) is included to provide power in low-light conditions.

Instalação/Substituição da Bateria:

1. Ensure the calculator is turned off or in a well-lit area to utilize solar power.
2. Localize a tampa do compartimento da bateria na parte traseira da calculadora.
3. Remova a tampa com cuidado.
4. Insert a new LR-54 or LR44 battery, ensuring the correct polarity (+/-) as indicated inside the compartment.
5. Recoloque a tampa do compartimento da bateria com segurança.

Note: The calculator may power on automatically once sufficient light or battery power is detected.

5. Instruções de operação

Operações Aritméticas Básicas:

Enter numbers and use the standard arithmetic keys (+, -, ×, ÷) followed by the equals key (=) to perform calculations.

• Adição: [Number 1] [+] [Number 2] [=]
• Subtração: [Number 1] [-] [Number 2] [=]
• Multiplicação: [Number 1] [×] [Number 2] [=]
• Divisão: [Number 1] [÷] [Number 2] [=]

Clear Functions:

• [CA/C] (All Clear): Apaga todas as entradas e a memória, reiniciando a calculadora.
• [CE] (Clear Entry): Clears the last entered number or the current calculation result without affecting previous entries or memory.

Percentualtage Cálculo:

Para calcular porcentagemtages, use the [%] chave.

• Exampem: Calculate 15% of 200.
  Digitar [200] [×] [15] [%]. The result will be 30.
• Exampem: Add 15% to 200.
  Digitar [200] [+] [15] [%]. The result will be 230.

Cálculo do imposto:

The calculator features dedicated keys for tax calculations. First, set the tax rate.

1. Setting the Tax Rate:
   Enter the tax rate (e.g., [8] for 8%). Press [RATE SET]. The tax rate is now stored.
2. Adding Tax:
   Enter the amount (e.g., [100]). Imprensa [+TAX]. The display will show the amount with tax added.
3. Subtracting Tax:
   Enter the amount (e.g., [108]). Imprensa [-TAX]. The display will show the amount with tax removed.
4. Recalling Tax Rate:
   Imprensa [RATE RECALL] para view the currently set tax rate.

Funções de memória:

The 4-key memory allows you to store and recall values.

• [M+] (Memory Plus): Adiciona o valor exibido à memória.
• [M-] (Memory Minus): Subtrai o valor exibido da memória.
• [RM] (Recall Memory): Displays the value currently stored in memory.
• [CM] (Clear Memory): Clears the memory content. (Often combined with RM, pressing RM twice clears memory).

Cálculo da raiz quadrada:

To calculate the square root of a number, enter the number and then press the [√] chave.

• Exampem: Calculate the square root of 81.
  Digitar [81] [√]. The result will be 9.

6. Manutenção

• Limpeza: Use a soft, dry cloth to clean the calculator's exterior. For stubborn dirt, slightly dampen the cloth with water and a mild detergent, then wipe dry immediately. Do not use abrasive cleaners or solvents.
• Armazenar: When not in use for extended periods, store the calculator in a cool, dry place away from direct sunlight and extreme temperatures.
• Duração da bateria: The battery life is approximately 2 years when used for 1 hour per day under solar power. Replace the battery when the display becomes dim or erratic in low light.

7. Solução De Problemas

8. Especificações

9. Garantia e Suporte

Sharp products are manufactured to high-quality standards. For specific warranty information, please refer to the warranty card included with your purchase or contact your local Sharp customer support. Keep your purchase receipt as proof of purchase.

For further assistance or inquiries, please visit the official Sharp website ou entre em contato com o departamento de atendimento ao cliente.