A calculator is an electronic device used to perform mathematical calculations.
Calculators come in a variety of sizes and designs, from small handheld devices to large desktop models.
They can perform a wide range of calculations, from basic arithmetic to more advanced operations such as trigonometry and statistics.
Most calculators have a keyboard with numerical keys and mathematical operations such as addition, subtraction, multiplication and division.
Many calculators also have functions for square roots, logarithms and trigonometric functions such as sine, cosine and tangent.
Some calculators also have memory function which can store and recall values.
Most calculators use LCD or LED displays, but some older models used a mechanical display.
Calculators have been widely used in education, business, and science, as well as in everyday life.
The first electronic calculator was invented in the 1960s and were very expensive, but with technological advancements, they became more affordable and widespread.
Today, calculators are also available as apps on smartphones and tablets.
