Who invented the calculator? The origin of the calculator

The predecessor of the computer was the calculator , which was invented to facilitate calculations. In ancient times, people used manual abacus to do simple calculations, to 1642, only 19-year-old French great scientist Pascal quoted the principle of the abacus, invented the first mechanical calculator, in his calculator there are some interlocking gears, a gear that turns ten digits will make another gear turn one place, people can dial the number like dialing the ** dial, the calculation result will appear in another window, but can only do addition and subtraction calculations. In 1694, Leibniz improved it in Germany to allow multiplication and division.

After that, it was not until the late 1950s that electronic calculators appeared.

Early calculators could only do calculations, not store results; 1833 The father of the computer, the British scientist Barbich, conceived a mechanical computer that could be stored, but it was not possible until his death.

Under the pressure of war, human beings have invented many new things, and computers are no exception. The computer is based on the principle of Babich, but uses an electronic valve or vacuum tube instead of gears and levers. In 1943, the first computer appeared in England, called Korosses, which was used to crack the codes of the German army, which greatly helped in the victory of World War II.

The first general-purpose computer was built by the Americans in 1946, called Ennie Aike, which was large and hot, containing 19,000 electron tubes, and was later reduced by the invention of electric crystals and microchips.

In 1642, the French mathematician Pascal (invented the first mechanical calculator and named it "Pascaline".

Cliff Sinclair.

In 1972, he invented the electronic calculator.

Calculators are the earliest calculation tools, for example: quipu or khipu was a knotted rope method used by the ancient Incas to count or record history. It is made of knots of many colors.

There are also Antikythera devices of the ancient Greeks, Chinese abacus, etc.

At the beginning of the 17th century, there was a great development of calculation tools in Western countries, and the English mathematician Napier invented them"Napier counts"The English priest Ochhard invented a cylindrical logarithmic arithmic ruler, which can not only do addition, subtraction, multiplication and division, multiplication, and square operations, but can even calculate trigonometric functions, exponential functions and logarithmic functions.

These calculation tools not only led to the development of calculators, but also laid a good foundation for the development of modern calculators, and became widely used calculation tools in modern society.

In 1642, the 19-year-old French great scientist Pascaline invented the first mechanical calculator, people can dial the numbers in like dialing, and the calculation results will appear in another window, but can only do addition and subtraction calculations. In 1694, Leibniz improved it in Germany to allow multiplication and division calculations.

In the 19th century, Babbage took the concept of a computing tool even further and tried to create the first programmable calculator, but the machine he built was too heavy to operate. Beginning in the 70s of the 20th century, microprocessor technology was incorporated into the computer process, the original microprocessor was produced by Intel in 1971 for a Japanese computer company called Busicom, and in 1972 HP launched the first handheld scientific calculator HP-35.