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The calculator is an amazing discovery of modern science. And through these amazing discoveries, man is proving his superiority. The use of calculators is very important for quick addition and subtraction, multiplication and division in daily life. In case of examination or on the hands of the cashier, we see the use of this amazing technology everywhere. We all like to use this square-shaped cute little device. So in this world of technology and science, we are very well known about calculators. This four-cornered technology was a groundbreaking discovery.

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Evolution of the calcaulator

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Nowadays, the use of calculators is noticeable everywhere. But there is some disagreement about the inventor, who made the first calculator. The first calculator is thought to be the human finger. And it's through the fingers found in the hand that man learns to count. So, the first calculator is the ten fingers of two human hands. We still use our fingers to do simple calculations. And the idea is that from the use of ten fingers, in the beginning 0, 1-9 these ten digits were used.

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Since then, people all over the world have been using this calculation method. The eminent French scientist Pascal invented the first calculator using various metal parts. This device could only add and subtract. This mechanical calculator was invented in the mid-1600s, and Pascal invented the device. The size of this calculator was like a small desktop computer. Before the invention of the calculator, this calculator called Abacus was used in different parts of Asia.

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At that time the device was known as Pascal's calculator or Pascaline, some people called this calculator 'Pascaline'. In the seventeenth century, this calculator was the only calculator in the world that could be used to calculate very easily. The German mathematician Gottfried Wilhelm upgraded Pascal's instrument in the late 1600s. Using his design in 1691, he created a new calculator that could be multiplied by addition and subtraction.

The first commercial calculator was marketed in the mid-1900s. The demand for mechanical calculators has been declining since the 1970s, with the advent of modern electronic calculators. The invention of the microprocessor reduced the size of the calculator and made it reach the human pocket.

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Since then there have been many changes in the shape of the calculator. The new calculation methods has been added to the calculator. Scientific calculators are now available in the market without such calculators capable of complex addition-subtraction-multiplication-division..

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These calculators can solve complex problems like function values, indicators, logarithms, trigonometric values, geometric values etc. However, due to the increase in the use of computers and mobile phones, the use of this device is declining. However, calculators are still used in various schools, colleges, offices, courts or shops to complete calculations easily and quickly. A type of silicon chip is used to express numbers in calculator displays.

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Conclusion:

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Mechanical calculators have become more advanced over time. Electronic calculators later became the most popular. Modern scientific calculators are now used in education. But through many evolutions, the calculator has reached the modern state. The whole world will be grateful to all these scientists for their hard work and research that led to the creation of modern calculators.

I am inviting @sandupi & @alaraf to participate in this contest.