Sharp EL501X2BWH Engineering/Scientific Calculator Instruction Manual

1. Introduction

This manual provides detailed instructions for the operation and maintenance of your Sharp EL501X2BWH Engineering/Scientific Calculator. Designed for students and professionals, this calculator performs over 130 scientific and mathematical functions, making it suitable for general math, pre-algebra, algebra, and trigonometry. Please read this manual thoroughly to understand all features and ensure proper use.

Image 1.1: The Sharp EL501X2BWH Scientific Calculator, displaying its keys and single-line LCD screen.

2. Getting Started

2.1. Battery Installation

The Sharp EL501X2BWH calculator operates on two LR44 batteries (included). To install or replace batteries:

1. Ensure the calculator is turned off.
2. Locate the battery compartment cover on the back of the calculator.
3. Remove the cover using a small screwdriver.
4. Insert two new LR44 batteries, observing the correct polarity (+/-).
5. Replace the battery compartment cover securely.

Note: Always use fresh batteries and dispose of old batteries responsibly.

2.2. Turning On and Off

• To turn on the calculator, press the ON/C button.
• To turn off the calculator, press the 2nd F button followed by the OFF button.

2.3. Display Overview

The calculator features a 10-digit, 1-line LCD display. Indicators for various modes (e.g., DEG, RAD, GRAD, CPLX, STAT) will appear on the display to show the current calculator state.

Image 2.1: Close-up of the calculator's 10-digit LCD display and the reset button location.

3. Basic Operations

3.1. Arithmetic Calculations

Perform basic arithmetic operations using the number keys and the +, -, ×, and ÷ keys. Press = to display the result.

• Example: To calculate 15 + 7: Press 1 5 + 7 =. The display will show 22.

3.2. Clear Functions

• Press CE to clear the last entered number or operation.
• Press ON/C to clear all entries and reset the calculator to its initial state (except memory).

4. Scientific Functions

The calculator provides 131 built-in functions. Many keys have secondary functions, accessed by pressing the 2nd F key before the desired function key.

4.1. Trigonometric Functions

Use sin, cos, tan for standard trigonometric calculations. Their inverse functions (sin^-1, cos^-1, tan^-1) are accessed via 2nd F.

The angle unit can be changed using the DRG key. Press DRG repeatedly to cycle through DEG (degrees), RAD (radians), and GRAD (gradients).

4.2. Logarithmic and Exponential Functions

• Logarithms: Use log (base 10) and ln (natural logarithm).
• Exponentials: Use 10^x (accessed via 2nd F and log) and e^x (accessed via 2nd F and ln).

4.3. Powers and Roots

• Square: Use x².
• Square Root: Use √ (accessed via 2nd F and x²).
• General Power: Use y^x.
• Reciprocal: Use 1/x (accessed via 2nd F and y^x).

4.4. Factorials

Calculate factorials using the n! function (accessed via 2nd F and CPLX).

5. Advanced Functions

5.1. N-Base Calculations (HEX, DEC, BIN, OCT)

The calculator supports calculations in different number bases: hexadecimal (HEX), decimal (DEC), binary (BIN), and octal (OCT). Use the dedicated keys for these operations, typically found above the number keys (e.g., →OCT, →BIN, →DEC, →HEX).

Image 5.1: The calculator's keypad, showing various scientific and N-base function keys.

5.2. Complex Number Calculations

To enter and perform calculations with complex numbers, switch to Complex Mode. Press CPLX to activate this mode. The display will show "CPLX".

Refer to the calculator's key markings for specific complex number operations (e.g., real and imaginary part extraction, argument, magnitude).

5.3. Statistics Functions

The calculator supports one-variable statistical calculations. To enter Statistics Mode, press STAT. The display will show "STAT".

Use the DATA CD key to clear statistical data and the M+ key to input data points. Statistical results (mean, standard deviation, etc.) can be retrieved using specific function keys, often accessed via 2nd F.

5.4. Memory Functions

The calculator has one independent memory. Use the following keys:

• M+: Adds the displayed value to the memory.
• STO: Stores the displayed value into memory.
• RCL: Recalls the value from memory to the display.

6. Maintenance and Care

6.1. Cleaning

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

6.2. Storage

When not in use, store the calculator in its protective hardcover to prevent scratches and damage. Avoid exposing the calculator to extreme temperatures, humidity, or direct sunlight for extended periods.

Image 6.1: The Sharp EL501X2BWH calculator with its protective slide-on cover, which also features basic instructions.

7. Troubleshooting

7.1. Common Issues

• Calculator does not turn on: Check battery installation and ensure batteries are not depleted. Replace batteries if necessary.
• "Error" message displayed: This usually indicates an invalid operation (e.g., division by zero, taking the square root of a negative number). Press CE or ON/C to clear the error and re-enter the calculation.
• Incorrect results: Verify that the correct mode (DEG/RAD/GRAD, Normal/Stat/Complex) is selected for your calculation. Ensure all previous calculations are cleared using ON/C before starting a new one.

7.2. Resetting the Calculator

If the calculator behaves erratically or freezes, a reset may resolve the issue. Locate the RESET button (a small recessed button, often requiring a thin object like a paperclip to press) on the back or front panel. Pressing this button will clear all memory and settings, returning the calculator to its factory default state.

8. Specifications

Image 8.1: The Sharp EL501X2BWH calculator showing its physical dimensions.

9. Warranty and Support

This Sharp calculator is manufactured by Sharp Electronics. For warranty information, technical support, or service inquiries, please refer to the official Sharp website or contact their customer service department.

You can find more information about Sharp products and support at the official Sharp store: Sharp Calculators Store.