Battery Replacement

To Install or Replace Batteries — When the batteries become weak, the display will work but not the printer.

This indicates that you should replace the batteries.

1.Set the power switch to OFF.

2.Remove the battery cover by sliding it in the direction of the arrow on the cover.

3.Replace the batteries. Be sure that the “+” and “–” marks on the battery correspond to the “+” and “–” marks in the calculator. Always put back the 4 batteries at the same time.

4.Put back the battery cover.

Battery: Heavy duty manganese batteries size AA (or R6) × 4

Note: When the batteries are replaced, the calculator may fail to function correctly. If this occurs, remove the batteries, wait at least two minutes, then reinstall them.

Also, if the calculator is subjected to a strong impact or noise during a calculation, it may not print correctly or the calculation may be lost. If this happens, the calculation must be performed again.

HOW TO CONNECT THE AC ADAPTOR (OPTION)

This machine can also be operated on AC power by use of AC Adaptor. When the AC adaptor is connected to the calculator, the power source is automatically switched over from dry batteries to AC power source.

AC adaptor: Model EA-28A 1

Note: Make sure that you turn the calculator’s

power off when connecting or disconnecting the AC adaptor.

1To connect the AC adaptor, follow steps and 2.

To disconnect the AC adaptor, simply reverse the procedure.

EL-1801E specifications

The Sharp EL-1801E is a highly regarded scientific calculator that has garnered attention for its exceptional features, robust build, and user-friendly interface. Designed for students, educators, and professionals alike, this calculator combines advanced technology with practicality, making it an ideal companion for a wide range of mathematical computations.

One of the defining characteristics of the EL-1801E is its comprehensive set of functions. With over 220 built-in functions, including advanced trigonometric, logarithmic, and statistical calculations, it caters to the needs of various users, from high school students to university scholars. This extensive functionality ensures that users can perform complex calculations without requiring additional tools.

The EL-1801E is equipped with a dual-line display, enabling users to view both the input and output simultaneously. This feature enhances the user experience, allowing for easy verification of calculations and improving overall efficiency. The display is designed to be clear and legible, even in low-light conditions, thanks to its backlit feature, which further contributes to its usability.

In terms of design, the Sharp EL-1801E boasts a slim profile, making it portable for on-the-go calculations. Its durable construction ensures that it can withstand the rigors of daily use, whether in a classroom or a professional setting. The calculator is powered by solar energy, supplemented by a battery, ensuring long-lasting performance and reducing the need for frequent battery changes.

Another noteworthy aspect of the EL-1801E is its memory capabilities. The calculator allows users to store and recall values, which is particularly beneficial when working with long calculations or when needing to reference previous results. This memory function is essential for those who frequently deal with repetitive calculations or complex equations.

Moreover, the EL-1801E comes with convenient features such as a fraction conversion, which simplifies the process of working with rational numbers. Its percentage calculations and constant functions offer added efficiency for users engaged in financial, statistical, or engineering-related tasks.

In summary, the Sharp EL-1801E scientific calculator stands out for its powerful functions, user-friendly display, and portability. Its advanced features, durable build, and energy-efficient design make it a reliable tool for anyone needing a versatile calculator, whether in education or professional environments. As technology continues to evolve, the EL-1801E remains a relevant and indispensable asset for precise mathematical calculations.