We are now able to enjoy the fun of the Internet, things have to thank a domain name. Let us avoid the emergence of domain names manually enter the IP embarrassment, just remember the domain name of the website will be able to easily access the Internet.
You want to know what the domain name is? We first have to start with the TCP / IP agreement.
First, generate TCP / IP protocol
in a sense, Internet can be said is a product of the Cold War. Such a large network, its origins can be traced back to 1962. At that time, the US Department of Defense in order to ensure the United States and overseas defense defense forces armed by the Soviet Union for the first time after a nuclear strike still has some ability to survive and fight back, found it necessary to design a decentralized command system: It consists of one decentralized command dots, when part of the command point was destroyed, other points still work, and between these points, can bypass those commanding point has been destroyed and continue to keep in touch.
1974, IP (Internet Protocol) and TCP (Transmission Control Protocol) come out, collectively known as TCP / IP protocol. Both protocol defines a method for transmitting a message (or command files) in between computer networks. Subsequently, the US Department of Defense has decided to provide free to the world unconditionally TCP / IP, namely core technology to solve the world publish communications between computer networks, TCP / IP protocol core technology of public eventually led to the great development of the Internet.
By 1980, both the use of the world's TCP / IP protocol of the US military ARPA network, there are many networks use a variety of other communication protocols. In order to connect these networks, American Vinton Cerf (Vinton Cerf) proposed an idea: to use their own communications protocols within each network, and when the other network communication using TCP / IP protocol. This idea eventually led to the birth of the Internet, and to establish a TCP / IP networking protocol in terms of unshakable position.
Second, the domain name is what?
TCP / IP protocol is adopted, we now had a well-known Internet. Each access the Internet "network" are a core machine as an intermediary, and the formation of a separate "domain" around the core machine. 
In order to machine and machine to perform core support and management functions can naturally function in the network must be assigned a specific code. However, due to a further increase in networked machine, the researchers found that the hostname directly with binary code corresponding work has become overwhelmed; then, in the IP protocol and has developed a cross between a binary code between the host name the middle part of the identification symbol, that is represented by a four阿拉伯数字separated origin of Internet addresses. After four阿拉伯数字use as the intermediate code, such code management networked machine becomes relatively easy and intuitive some. However, for ordinary Internet users, this code consists of four digits is still meaningless, since the combination of numbers is no simple unrelated significant, is not easy for users to recognize and remember.
In the end, to a certain extent, in real life a particular image associated words or letters as symbols, external code combination formed according to certain rules to replace the numbers, the name became the core of the machine every network - that is, we often say "domain name." This form is also booming domain name of the Internet played a role contributed (not hard to imagine a long and meaningless string of numbers online will bring much trouble).
Although from the point of view form, the domain name is simply a networked computer in the network code (address), but the richness of network resources and information has reached unprecedented proportions in a very short period of time, people who go online purposes, It is no longer just for computer contacts and learn, but to get more useful information. We can say that the domain name was to accelerate the development of the network, and the network and, in turn, enriched the connotation and value of domain names. Thus, the significance of the domain name itself more than its original intention to become the symbol or logo web owners.
A domain name is the only indicator of network user awareness pages for all its businesses. With the continuous development of rich web content and network technology, the network is a full range of *** to all areas of society and bring huge economic benefits, network users have already become a part of society now very important. And if you want to attract users and website owners whom accepted, in exchange for economic benefits to the user, it is necessary to provide them with an easy to identify, easy indicator of memory. It is this domain name pointer (of course, with the gradual introduction of sophisticated technology and network search engines, domain name plays in positioning the role of network resources have been greatly weakened).