Origin of calculator.

Best answer: Calculator is the earliest computing tool, the earliest method of knotting notes and counting, counting or recording history. One of the earliest computing tools used in ancient China is called “planning strategy”, also known as “planning”. This kind of toy is mostly made of bamboo, but also made of wood and animal bones, which can be carried around. Later, the Chinese invented the abacus, which is still used today. It is another invention in the field of ancient Chinese computing tools.

Calculator is the earliest computing tool, the earliest method of knotting notes and counting, and counting or recording history. It is made of knots of many colors. One of the earliest computing tools used in ancient China is called “planning strategy”, also known as “planning”. This kind of toy is mostly made of bamboo, but also made of wood and animal bones, which can be carried around. Later, the Chinese invented the abacus, which is still used today. It is another invention in the field of ancient Chinese computing tools. The pearl abacus in Ming Dynasty is almost the same as that in modern times. In the west, abacus was used for centuries before the popularity of Arabic numerals in India. Then came the mechanical calculator. At the beginning of 17th century, the British mathematician Napier invented “Napier counting chips”, and the British pastor O ‘Sheard invented the cylindrical logarithmic scale. This scale can not only do addition, subtraction, multiplication and division, multiplication and square, but also calculate trigonometric function, exponential function and logarithmic function. These computing tools not only promote the development of calculators, but also lay a good foundation for the development of modern calculators, and become widely used computing tools in modern society. Since then, it was not until the late 1950s that electronic calculators appeared. Since 1970s, microprocessor technology has been absorbed into the calculator process. In 1972, HP introduced the first handheld scientific calculator.

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