Appendix

1. Replacing Batteries

The calculator uses two different kinds of batteries: manganese (AAA) for unit operation, and lithium (CR2032) for memory backup.

Compatible battery types

Type (use)

Model

Quantity

Manganese battery

AAA

4

(for unit operation)

 

 

 

 

 

Lithium battery

CR2032

1

(for memory backup)

 

 

 

 

 

*To prevent loss of stored data, DO NOT remove both the unit operation and memory backup batteries at the same time.

Precautions for

• Fluid from a leaking battery accidentally entering an eye could

handling

result in serious injury. Should this occur, wash with clean water

batteries

and immediately consult a doctor.

 

• Should fluid from a leaking battery come into contact with your

 

skin or clothes, immediately wash with clean water.

 

• If the product is not to be used for some time, to avoid damage

 

to the unit from leaking batteries, remove them and store in a

 

safe place.

 

• Do not leave exhausted batteries inside the product.

 

• Do not fit partially used batteries, and be sure not to mix

 

different batteries types.

 

• Keep batteries out of the reach of children.

 

• Do not allow batteries to become completely exhausted; doing

 

so may cause the batteries to leak, and may damage the

 

calculator’s hardware.

 

• Do not throw batteries into a fire or water, as this may cause

 

them to explode.

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Sharp EL-9900 operation manual Appendix, Replacing Batteries, Handling

EL-9900 specifications

The Sharp EL-9900 is a remarkable scientific calculator that exhibits a fusion of advanced features, cutting-edge technology, and an ergonomic design tailored for both students and professionals. One of the standout characteristics of the EL-9900 is its extensive range of functions, boasting over 550 built-in calculations that cover various mathematical and scientific disciplines. This calculator is particularly popular among engineering and physics students due to its ability to handle complex calculations with ease.

One of the key features of the EL-9900 is its 2-line display, which allows users to view both the input and the result simultaneously. This dual display enhances usability, especially when dealing with intermediate steps in calculations. The calculator also includes a built-in 12-digit LCD screen, which ensures clarity and precision in reading numbers, making it easier for users to work for extended periods without straining their eyes.

The EL-9900 is equipped with a wide array of mathematical functions, including trigonometric, logarithmic, and exponential functions. Notably, it supports fraction calculations, statistical analyses, and unit conversions. Its advanced programming capabilities, such as 36 programmable functions and the ability to store data, further enhance its functionality, allowing users to create custom calculations tailored to specific needs.

One of the more modern technologies incorporated into the EL-9900 is its solar-powered function, which is complemented by a battery backup, ensuring that the device remains operable in varied lighting conditions. This environmentally friendly design reduces the need for frequent battery replacements, making it a cost-effective choice for users.

In terms of design, the Sharp EL-9900 boasts a slim profile and lightweight construction, which makes it portable and easy to carry. Its durable casing ensures that it can withstand the rigors of daily use, whether in a classroom setting or a professional environment.

Overall, the Sharp EL-9900 stands out as a versatile scientific calculator packed with features designed to meet the needs of students and professionals alike. Its robust functionality, clear display, and user-friendly design make it a reliable tool for anyone engaged in mathematical and scientific pursuits. Whether used for basic calculations or advanced problem-solving, the EL-9900 remains a powerhouse in the realm of scientific calculators.