Internet:
1, the Internet is a collection of global information resources. There is a rough saying that the Internet is a logical network composed of many small networks (subnets), and each subnet is connected with several computers (hosts).
2. The purpose of Internet is to exchange information resources through many routers and public Internet based on some common protocols. It is a collection of information resources and resources.
Its basic concept is hypertext. If you have used any online help system on indows, you will have a better understanding of its structure.
Internet is a network that connects computer networks with different structures distributed all over the world with various transmission media. So some people call it the network of the network, and Chinese translation is Internet, Internet, Internet and so on.
The main services provided by the Internet are World Wide Web (WWW), file transfer (FTP), E-mail (E-mail), Telnet, mobile phone (3GHZ) and so on.
World Wide Web:
1 and WWW (World Wide Web) are global, interactive, dynamic, multi-platform, distributed and graphical information systems based on the Internet. It is just a network service built on the Internet.
It was originally developed to share research results among scientists, who can share research results online in the form of pictures and texts.
2. The World Wide Web is a collection of countless websites and web pages, which together constitute the most important part of the Internet (the Internet also includes e-mail, newsgroups and newsgroups).
It is actually a collection of multimedia, connected by hyperlinks. What we usually watch online through a web browser is the content of the World Wide Web.
3.WWW (World Wide Web) is called 3W for short, sometimes it is also called Web. Chinese is translated into World Wide Web, World Wide Web and so on. WWW was developed by CERN, aiming at providing convenience for communication, information exchange and information inquiry for scientists all over the world by using the Internet.
4. The World Wide Web is based on the client/server model. WWW is based on Hypertext Markup Language (application under standard generalized markup language) and Hypertext Transfer Protocol.
An information browsing system that can provide a consistent user interface for Internet services. Among them, the WWW server uses hypertext links to link information pages, which can be placed on the same host or in different geographical locations.
This link is maintained by Uniform Resource Locator (URL), and the WWW client software (namely WWW browser) is responsible for displaying information and sending requests to the server.
Nowadays, the application of WWW has gone far beyond the original idea and become one of the most popular applications on the Internet. Its appearance has greatly promoted the popularity of the Internet.
Extended data:
First, the basic introduction of the Internet:
Computer network is only the carrier of information dissemination, and the superiority and practicability of the Internet lies in itself. Internet top-level domain names are divided into institutional domain names and regional domain names. At present, there are mainly 14 institutional domain names.
It connects all the computers. People can find different information from the Internet. There are millions of useful information for people. You can use the search engine to find the information you need.
Search engines help us find information faster and easier. Just enter one or several keywords, and the search engine will find all the pages that meet the requirements. You just need to click on these pages.
Second, the characteristics of the Internet:
1 is the global computer internet.
This is a huge information material.
Most importantly, the Internet is a big family, with tens of millions of people participating and sharing the wealth (i.e. resources) created by human beings.
Three. Basic introduction of the World Wide Web:
The World Wide Web (WWW) is a global information resource network that integrates multimedia information such as text, sound, image and video, and is an important part of the Internet.
Browser is a bridge for users to access WWW and a window for users to obtain WWW information. Through the browser, users can roam in the vast ocean of Internet, search and browse all the information they are interested in.
The webpage files of WWW are written by Hypertext Markup Language (HTML) and run under the support of Hypertext Transfer Protocol (HTTP).
The World Wide Web (WWW) was developed by CERN. Its purpose is to provide communication, information exchange and information inquiry facilities for scientists all over the world by using the Internet.
Hypertext contains not only text information, but also multimedia information such as graphics, sounds, images and videos (so hypertext is also called hypermedia). More importantly, hypertext means linking to other hypertext, which is called hyperlink.
Four. Features of the World Wide Web:
1 and WWW (World Wide Web) are a collection of countless websites and web pages, which together constitute the most important part of the Internet (the Internet also includes e-mail, newsgroups and newsgroups).
2. It is actually a collection of multimedia, connected by hyperlinks. What we usually watch online through a web browser is the content of the World Wide Web.
3. Using hypertext, users can easily link from one webpage to other webpages with related contents, no matter where these webpages are scattered on the host.
References:
Baidu Encyclopedia: Internet
References:
Baidu Encyclopedia: World Wide Web