Sharp EL-760R Calculator User Manual

Introduction

This manual provides detailed instructions for the proper use and maintenance of your Sharp EL-760R calculator. Designed for everyday calculations, this 8-digit calculator features dual power sources (solar and battery), memory functions, and specialized keys for percentage, root, and tax calculations. Please read this manual thoroughly to ensure optimal performance and longevity of your device.

Product Overview

The Sharp EL-760R is a compact and stylish calculator suitable for various office and personal computing needs. It features a clear 8-digit LCD display and a user-friendly key layout.

Key Features:

8-digit LCD display for clear readability.
Dual power source: Solar energy for bright conditions and battery for low light.
3-button memory functions (M+, M-, R-CM).
Automatic shut-off function to conserve power.
Integrated functions for percentage (%), square root (√), and tax calculation (+TAX, -TAX).
Compact and durable design.

Calculator Components:

Sharp EL-760R Calculator Front View — **Figure 1: Front View of Sharp EL-760R Calculator.** This image displays the calculator's 8-digit LCD screen, solar panel, and key layout including numerical keys, arithmetic operators, memory functions, and special function keys like percentage and tax.

Sharp EL-760R Calculator Dimensions — **Figure 2: Dimensions of Sharp EL-760R Calculator.** This image illustrates the physical dimensions of the calculator, showing a length of 12 cm and a width of 7.6 cm, providing a clear understanding of its compact size.

Setup

Power Source: Solar and Battery

The Sharp EL-760R calculator operates using a dual power system: solar energy and a single LR44 button cell battery. The solar panel powers the calculator in well-lit environments, while the battery provides power in low-light conditions or when solar power is insufficient.

Battery Installation/Replacement:

Ensure the calculator is turned off.
Locate the battery compartment on the back of the calculator.
Using a small screwdriver, carefully open the battery compartment cover.
Remove the old LR44 battery (if replacing).
Insert a new LR44 battery with the positive (+) side facing upwards.
Securely close the battery compartment cover.
Turn on the calculator to verify proper installation.

Note: The calculator comes with one LR44 battery included.

Operating Instructions

Basic Arithmetic Operations:

Addition (+): Enter the first number, press +, enter the second number, then press =.
Subtraction (-): Enter the first number, press -, enter the second number, then press =.
Multiplication (×): Enter the first number, press ×, enter the second number, then press =.
Division (÷): Enter the first number, press ÷, enter the second number, then press =.

Memory Functions:

M+ (Memory Plus): Adds the displayed value to the memory.
M- (Memory Minus): Subtracts the displayed value from the memory.
R-CM (Recall Memory / Clear Memory):
- Press once to recall the value stored in memory.
- Press twice to clear the memory (sets memory to zero).

Special Functions:

% (Percentage): Used for percentage calculations.
- To calculate X% of Y: Enter Y, press ×, enter X, press %.
- To add X% to Y: Enter Y, press +, enter X, press %.
√ (Square Root): Enter a number, then press √ to find its square root.
+TAX / -TAX (Tax Calculation): These keys are used for adding or subtracting a pre-set tax rate.
- Setting the Tax Rate: Press RATE SET, enter the tax percentage, then press +TAX.
- Recalling the Tax Rate: Press RATE RECALL.
- Adding Tax: Enter the amount, press +TAX.
- Subtracting Tax: Enter the amount, press -TAX.
+/- (Sign Change): Changes the sign of the displayed number (positive to negative, or negative to positive).

Clear Functions:

C/CE (Clear Entry / Clear All):
- Press once to clear the last entered number or calculation entry (Clear Entry).
- Press twice to clear all calculations and reset the calculator (Clear All).
CA (Clear All): Clears all entries and memory, resetting the calculator to its initial state.

Maintenance

Cleaning: Use a soft, dry cloth to clean the calculator's surface. Do not use liquid cleaners or abrasive materials, as they may damage the display or casing.
Storage: Store the calculator in a cool, dry place away from direct sunlight and extreme temperatures. Avoid placing heavy objects on top of the calculator.
Battery Care: If the calculator will not be used for an extended period, it is recommended to remove the battery to prevent leakage.

Troubleshooting

Problem	Possible Cause	Solution
Display is blank or dim.	Insufficient light for solar power, or low/dead battery.	Move to a brighter area or replace the LR44 battery.
Incorrect calculation results.	Incorrect key input, or memory not cleared.	Press CA to clear all and restart calculation. Double-check input.
Calculator does not turn on.	Battery is dead or incorrectly installed.	Check battery installation and replace if necessary. Ensure sufficient light for solar operation.

Specifications

Brand: Sharp
Model: EL-760R
Display: 8-digit LCD
Power Source: Dual (Solar and 1 x LR44 Battery)
Battery Included: Yes (1 x LR44)
Dimensions (L x W x H): Approximately 12 x 7.6 x 2.3 cm
Weight: Approximately 90 g
Material: Plastic
Functions: Basic arithmetic, memory (M+, M-, R-CM), percentage (%), square root (√), tax calculation (+TAX, -TAX), sign change (+/-), clear entry (C/CE), clear all (CA).

Warranty and Support

For warranty information or technical support regarding your Sharp EL-760R calculator, please refer to the warranty card included with your product or visit the official Sharp website. Contact details for customer service are typically available on the manufacturer's website.

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Sharp EL-760R