Appendix

Battery Replacement

Batteries used

•Use only the specified batteries.

TypeModel

Quantity

Lithium battery

CR2032

2

•Be sure to write down any important data stored in the memory before replacing the batteries.

Notes on battery replacement

Improper handling of batteries can cause electrolyte leakage or explosion. Be sure to observe the following handling rules:

•Do not mix new and old batteries.

•Make sure the new batteries are the correct type.

•When installing, orient each battery correctly as indicated in the calculator.

•Batteries are factory-installed before shipment, so may become exhausted before reaching the service life stated in the specifications.

When to replace the batteries

Replace the batteries immediately when any of the following situations occur:

•The calculator does not turn on when j is pressed.

•The message ‘Change Batteries’ appears.

•Continued use of the calculator when in low battery status may result in the memory contents being cleared.

•Executing programs under low battery condition may result in the memory contents being cleared.

•Failure to follow the battery replacement procedure as described may result in the memory contents being cleared.

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Sharp EL-5230, EL-5250 Appendix, Battery Replacement, Batteries used, When to replace the batteries, TypeModel Quantity
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EL-5230, EL-5250 specifications

The Sharp EL-5250 and EL-5230 are advanced scientific calculators that cater to students, professionals, and anyone in need of a reliable tool for complex calculations. Both models are designed with a blend of functionality, portability, and user-friendliness, making them excellent choices for math and engineering tasks.

The Sharp EL-5250 is equipped with a wide range of features ideal for higher-level calculations. It supports over 500 functions, including trigonometric, exponential, logarithmic, and statistical computations. The calculator also includes built-in memory functions, allowing users to store and recall values effortlessly. The large, easy-to-read LCD display can present multiple lines of data simultaneously, enhancing clarity and reducing the need for repetitive calculations.

On the other hand, the EL-5230, while slightly less advanced, still offers a robust set of functions. This model is particularly well-suited for students in high school or early college, providing essential functionalities for algebra, geometry, and basic statistics. Its 240 functions cover a variety of mathematical disciplines, making it a versatile option for different educational needs.

Both calculators feature Sharp's unique "MathPrint" technology, which is a standout characteristic allowing users to view fractions, square roots, and other expressions in a format more akin to traditional textbook layouts. This technology greatly enhances comprehension and usability, particularly for visual learners.

The calculators are powered by dual power sources, utilizing both solar and battery power, ensuring reliability in diverse environments. The compact and lightweight design of the EL-5250 and EL-5230 makes them highly portable. Users can easily carry them in a backpack or briefcase without added bulk.

Durability is another aspect where Sharp excels. The calculators are built to withstand regular use, featuring a sturdy exterior. Additionally, Sharp provides a protective cover that helps prevent damage during transport, making these calculators a long-term investment for users.

In summary, both the Sharp EL-5250 and EL-5230 deliver exceptional performance with their extensive features and advanced technology. They are perfect for those who require reliable and efficient tools for various mathematical tasks, whether in education or professional settings. With their user-friendly designs and durability, these calculators continue to be reliable companions for anyone working with numbers.
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