The network is introduced as follows:
The network consists of several nodes and links connecting these nodes, representing many objects and their relationships. 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 world-famous science and nature magazines 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.
The concept of network is introduced as follows:
In Chinese, the word "network" first appeared in Modern Chinese Electric Dictionary (version 1993), which is used to explain that in an electrical system, a circuit consisting of several components that transmit electric signals according to certain requirements or a part of such a circuit is called a network.
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.
The Internet of Ministry of Posts and Telecommunications is introduced as follows:
CHINANET, also known as Internet of Ministry of Posts and Telecommunications and China Public Internet, is an electronic information network based on Internet network technology operated and managed by Ministry of Posts and Telecommunications. 1995 started networking and provided services to the society in May. CHINANET consists of backbone network and access network, and the backbone network is its main information channel.