The network has many uses and enriches our spare time. On the Internet, you can chat with anyone and tell them your happiness, your sadness and your troubles. Don't need to know who he is.

The network is not just for this purpose. It can also "walk Wan Li Road", even if two people, one at the ends of the earth and the other at the ends of the earth, chat through the internet, it seems to be close at hand, which is really "neighbors with the sky"; You can also learn all kinds of news through the Internet. With a click of the mouse, the information you want to know will automatically appear in front of your eyes. It' s really "the scholar does not go out, and the world knows it"; You can also "invite famous teachers into your home" through distance education, and you can learn all kinds of knowledge at home, not to mention the expensive cost of having a tutor. With so many conveniences, it is no wonder that there are hundreds of millions of netizens all over the country and the world.

With the internet, I finally found a place to vent on the internet without disturbing my friends around me. Some words are very comfortable to say, and I think this is the benefit that the network brings to people.

Network consists of nodes and lines, representing many objects and their relationships. Mathematically, the network is a graph, which is generally considered as a weighted graph. In addition to the mathematical definition, the network also has a specific physical meaning, that is, the network is an abstract model from a certain kind of practical problems. In the computer field, the network is a virtual platform for information transmission, reception and sharing. Through it, the information of various points, surfaces and bodies is linked together, so as to realize the sharing of these resources. Network is the most important invention in the history of human development, which has promoted the development of science and technology and human society.

Before 1999, people generally thought that the network structure was random. However, people didn't realize the complexity of the network until Barabasi and Watts discovered the scale-free and small-world characteristics of the network in 1999 and published their findings in the world-famous magazines Science and Nature respectively.

With the help of software tools such as text reading, picture viewing, audio and video playing, downloading and transmission, and game chatting, the network will bring people extremely rich life and beautiful enjoyment from the aspects of text, pictures, sound and video.

Reference Network Baidu Encyclopedia