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Background and Identification
The Sharp EL-531X is a scientific calculator produced by Sharp. Sharp Corporation is a Japanese company that designs and manufactures electronic products. Sharp manufactures LDC panels, solar panels, mobile phones, microwave ovens, calculators, cash registers, and other products. Some Sharp calculators are sold under the Aquos brand.
The Sharp EL-531X model can complete scientific and statistical calculations with a mantissa of up to 14 digits. It uses an alkaline LR44 or equivalent battery. The Sharp EL-531X model can run up to 5000 hours with one battery.
In some cases, the Sharp EL-531X calculator may need to be reset. Pressing the RESET switch erases all data stored in the calculator’s memory. Your calculator may need to be reset when using the calculator for the first time, clearing all memory contents, after replacing the batteries, or when all the calculator’s keys become inoperative. To reset the calculator, use the tip of a ball-point pen or a similar object (not anything with a sharp or breakable tip) to press the RESET switch on the back of the calculator.
The Sharp EL-531X calculator includes a glass display, and the device is not waterproof. This model includes a two-line display and the name “Sharp” in capital letters in the upper left-hand corner of the calculator. The calculator’s model number is printed in the upper right-hand corner of the calculator’s front face.
Calculations: Scientific calculations, statistical calculations, etc.
Internal calculations: Mantissas of up to 14 digits
Pending operations: 24 calculations 10 numeric values (5 numeric values in STAT mode)
Power source: 1.5V DC: Alkaline battery (LR44 or equivalent) x 1
Operating time: Approx. 5000 hours
Operating temperature: 0 - 40 degrees Celcius
External dimensions: 80 mm (W) x 158 mm (D) x 14 mm (H), 3-5/32” (W) x 6-7/32” (D) x 9/16” (H)
Weight: Approx. 91 g (0.21 lb) (including battery)
Accessories: Battery x 1 (installed), operation manual, and hard case