What were the earliest calculation tools discovered in that century

The arithmetic chip that appeared in the Spring and Autumn Period in China is the oldest calculation tool in the world. According to the records of the Hanshu and the Chronicles of the Law, the calculation chip is a round bamboo stick, which is 23.86 centimeters long and has a cross-sectional diameter of 0.23 centimeters.

By the Sui Dynasty in the century AD, the length of the calculation chip was shortened, and the round stick was changed to square or flat. According to the literature, in addition to bamboo chips, there are also wood, iron, jade and tooth chips. When calculating, it is arranged into vertical and horizontal numbers, and any natural number is represented according to the principle of vertical and horizontal (such as 6,7008 is represented by , and when it encounters zero, it is represented by empty space), so as to carry out addition, subtraction, multiplication, division, square and other algebraic calculations.

After the negative number appears, there are two kinds of dividends, the red chip represents a positive number, and the black chip represents a negative number. This kind of computing tool and method of operation was unique in the world at that time.

The human hand is the oldest and most ready-made counting tool. Originally, people used one hand to represent one, two hands to represent two, and so on. Due to the uneven development of human civilization, it is still in the primeval forests of Australia.

There were primitive tribes that had stagnated at this level of development. They are only known to the average person.

One, two, three. Even in the tribe.

of the "smart people", at best, know only four and five. No matter how much they want, they call it "a lot, a lot."

This is actually a reproduction of the ancient state of human beings, which can be regarded as "living fossils".

In the 5th century BC, the Chinese began to use arithmetic chips.

abacus, because the Chinese people are smart.

Abacus, who doesn't know abacus, who doesn't know?

As early as the (15th) century, (Xu Yue) invented the abacus, which is still in use today.

It originated in China and has a history of more than 2,600 years and is an important invention in ancient China. Before the advent of Arabic numerals, the abacus was a widely used calculation tool in the world. Today, abacus continues to be used in parts of Asia and the Middle East, especially in stores, where it can be bought from stores of Chinese and Japanese goods.

In the West, it is sometimes used to help children understand numbers, and some mathematicians like to experience what it's like to use an abacus to calculate simple arithmetic problems.

To facilitate calculations, a variety of calculation tools have been invented. As early as the (15th) century, (Xu Yue) invented the abacus, which is still in use today.

For convenience, a wide variety of calculation tools have been invented.

For example, more than 2,000 years ago, the Chinese used chips to calculate.

More than 1,000 years ago, the Chinese invented the abacus.

At the beginning of the 17th century, the English invented the slide rule.

In the mid-17th century, Europeans invented mechanical calculators.

In the 40s of the 20th century, the first electronic computer was born.

In the 70s of the 20th century, the electronic calculator was invented.

In the 15th century, Xu Yue invented the abacus.

More than 1,000 years ago, the Chinese invented the abacus.

The earliest calculation tool in human history is the calculation, also known as the calculation chip, which is mostly made of bamboo, which can be carried around in a cloth bag. At the beginning of the 17th century, the calculation tools of Western countries had the development of a large cave, which was invented by the English mathematician Napier"Napier counts"The English priest Ochhard invented the cylindrical logarithmic slide rule, 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.

The arithmetic chip that appeared in the Spring and Autumn Period in China is the oldest calculation tool in the world. When calculating, two kinds of numbers are arranged in vertical and horizontal forms, and any natural number is represented according to the principle of vertical interval, so as to carry out addition, subtraction, multiplication, division, opening and other algebraic calculations. After the negative number appears, the calculation chip is divided into two types: red and two, the red chip represents a positive number, and the black chip represents a negative number.

This kind of computing tool and method was unique in the world at that time. Later, the working people of our country created the abacus as a tool for calculation. As early as the 15th century AD, the abacus has been widely used in China, and later spread to Japan, Korea and other countries.

It is characterized by simple structure, easy to use, particularly practical, it calculates the addition and subtraction of a larger number and a larger number, which is more simple. The abacus already has the main structural features of modern calculators. For example, when the abacus is toggled, data is input into the abacus, which acts as a "memory"; When calculating, the abacus formula plays the role of "operation instructions", while the abacus plays the role of "combinator".

Of course, after all, the abacus has to be moved by human hands, and there is no "automatic calculation" at all.

In addition to China, other medieval countries also invented a variety of calculation tools, such as the Roman abacus, the ancient Greeks' abacus, the Indians' sand tablet, and the British's engraved tablets. The principle of these calculation tools is basically the same, the same is to represent the number by a specific object, and use the mechanical operation of the object to perform the calculation.