1946 It was very expensive for more than ten years after the world's first electronic computer came out. Its form is to connect a computer directly with several terminals through communication lines, and it can also be regarded as the simplest prototype of LAN.
The earliest network was established by the Advanced Research Projects Agency (ARPA) of the US Department of Defense. ARPAnet not only studied the packet switching technology of leased line interconnection, but also studied the packet switching technology of wireless and satellite networks, which led to the emergence of TCP/IP.
In 1977- 1979, ARPAnet introduced the current TCP/IP architecture and protocol.
Around 1980, all the computers on ARPAnet started the conversion of TCP/IP protocol, and the initial Internet with ARPAnet as the backbone network was established.
1983, all ARPAnet computers completed the conversion to TCP/IP, and realized TCP/IP on UNIX (BSD 4.1). The biggest contribution of ARPAnet in technology is the development and application of TCP/IP protocol. Two famous science education networks have been established successively: China Science Network and BITNET.
1984, NSF of the National Science Foundation planned to establish 13 National Supercomputing Center and National Education Science and Technology Network. Then it replaced the backbone position of ARPANET.
1988 the internet began to open to the outside world.
199 1 June, 2006, among computers connected to the Internet, commercial users surpassed academic users for the first time, which was a milestone in the development history of the Internet, and the growth rate of the Internet was out of control.
2 1 century, the network platform was applied in the field of e-commerce. Online merchants have become a trend.
Extended data:
The development of Internet in China can be roughly divided into three stages:
The first stage is1987-1993, which is also the stage of research and experiment. During this period, some scientific research departments and institutions of higher learning in China began to study internet technology and carry out scientific research projects and scientific and technological cooperation, but the network application at this stage was limited to small-scale e-mail services.
The second stage is 1994 to 1996, which is also the initial stage. 1In April, 1994, Zhongguancun Education and Scientific Research Demonstration Network Project entered the Internet, and China was officially recognized as a country with Internet.
After that, several Internet network projects such as Chinanet, CERnet, CSTnet and Chinagbnet were launched nationwide. The Internet began to enter public life and developed rapidly in China.
By the end of 1996, the number of Internet users in China had reached 200,000, and the services and applications developed by the Internet were gradually increasing.
The third stage, from 65438 to 0997, is the fastest developing stage of Internet in China. After 1997, the number of netizens in China basically doubled every six months.
According to the statistical report released by China Internet Information Center (CNNIC), as of June 30, 2009, the total number of netizens in China was 530 million.
References:
Baidu encyclopedia-network