World Wide Web information is organized in the form. What is the Internet? Search engines: composition, functions, work principles
Already today, the number of Internet users reaches 3.5 billion people, and this is almost half of the population of the Earth. And, of course, everyone knows that World Wide Web finally enveloped our planet. But still far from everyone can say whether there is a distinction between the concepts of the Internet and the World Wide Web. Oddly enough, many are absolutely sure that these are synonyms, but the wanted guys can bring the arguments that this confidence will be charged.
What is the Internet?
Without going into complex technical details, it can be said that Internet is a system that combines computer networks around the world. Computers are divided into two groups - clients and servers.
Clients call ordinary user devices where personal computers, and laptops, and tablets, and, of course, smartphones. They send a request, get and display information.
All information store servers that can be classified for different purposes:
- web server
- postal,
- chats
- radio and television broadcast systems,
- file sharing.
Servers are powerful computersworking continuously. In addition to storing information, they receive requests from customers and send the necessary answer. At the same time, hundreds of such requests are treated.
More in our brief liberation it is necessary to mention it is worth mentioning internet providersthat provide the connection of the client and server. The provider is such an organization with its Internet server to which all its clients are connected. Providers provide communication on the telephone cable, a dedicated channel or wireless network.
So you get on the Internet Is it possible to do without a provider and directly connect to the Internet? Theoretically you can! You will have to become the provider yourself and spend for a huge amount of money to get to the central servers. So do not scold a strong Internet provider for high rates - these guys also need to pay many things and spend money on the maintenance of equipment.
World Wide Web enthrall the whole world
WORLD WIDE WEB or just Web - Poutine. Actually it is represented by a huge number of pages that are connected with each other. This connection is provided by references by which you can go from one page to another, even if it is located another computer connected to.
World Wide Web - the most popular and large Internet service The worldwide web for its work uses special web servers. They are stored for web pages (one of them you see now). Pages related links with general subjects, appearance, and usually located on one server are called the website.
To view pages and web documents, special programs are used - browsers.
It is the World Wide Web includes forums, blogs and social networks. But directly its work and existence provides the Internet ...
Is the difference?
In fact, the difference between the Internet and the World Wide Web is quite large. If the Internet is a huge network, binding millions of computers throughout the planet for sharing information, the World Wide Web is just one of the ways of sharing this information. In addition to providing the WORLD WIDE WEB, the Internet allows you to use email and various messengers, as well as transmit FTP protocol files,
The Internet is what connects numerous computer networks.
WORLD COUNT - these are all pages that are stored on special Internet servers.
Conclusion
Now you know that the World Wide Internet and World Wide Web are different things. And most importantly, you can shine with the mind and explain to friends in what is this difference.
World Information Web
The World Wide Web is a distributed system that provides access to the associated documents located on various computers connected to the Internet. To designate the World Wide Web also use the word "web" (translation from the English Web means "web") and the abbreviation WWW. World wide web forms hundreds of millions of web servers. Most worldwide web resources are based on hypertext technology. Hypertext documents posted in the World Wide Web are called web pages. Several web pages made by the common theme, design, as well as related links and usually located on the same web server are called the Web site. Special programs are used for downloading and viewing web pages - browsers. World Wide Web caused a real revolution in information technologies And the explosion in the development of the Internet. Often, speaking of the Internet, they mean by the World Wide Web, but it is important to understand that this is not the same thing.
History of World Wide Web
The inventors of the World Wide Web are considered to be Tim Berners-Lee and, to a lesser extent, Robert Kayo. Tim Berners-Lee is the author of HTTP technologies, URI / URL and HTML. In 1980, he worked in the European Council on Nuclear Research Consultant software. It is there, in Geneva (Switzerland), he for own needs Posted by the Encquir program, which used random associations for storing data and laid a conceptual basis for the World Wide Web. In 1989, working in CERN over the internal network of the organization, Tim Berners-Lee offered a global hypertext project, now known as the World Wide Web.
The project implied the publication of hypertext documents related to the hyperlinks, which would facilitate the search and consolidation of information for CERN scientists. To implement the project Tim Berners, the AUT identifiers were invented, the HTTP protocol and hTML language. These are technologies, without which one cannot imagine modern Internet. In the period from 1991 to 1993, Berners-Lee improved, the technical specifications of these standards and published them. But, nevertheless, officially the year of the birth of the World Wide Web should be considered 1989. Within the framework of the Berners-Lee project, the world's first HTTPD web server and the world's first hypertext web browser called Worldwideweb. This browser was at the same time a WYSIWYG editor, its development was launched in October 1990, and was completed in December of the same year.
The Internet is becoming an increasing place in our life. No technology created by a person has not yet gained so wide popularity. The Internet is a worldwide web, which covers the whole globe, enveloping its network from the TVs. He began to acquire its popularity even in the relatively distant 1990s. In the article, we will discuss where he came from and for what reason was so popular.
Internet as a worldwide web
The second name of a similar plan was not good. The fact is that the Internet combines many users worldwide. Like a spider network, he envelops the whole globe with his threads. And this is not an ordinary metaphor, so there is really. Internet is wires and wireless networks, the second of which are not visible to us.
But this is a lyrical digression, in fact the Internet is associated with the World Wide Web (WWW, or Word Wide Web). It covers all computers connected to the network. On remote servers, users store necessary informationand can also communicate online. Often, this title understands the world or global network.
It is based on several particularly important protocols, type TCP / IP. Thanks to the Internet, the World Wide Web, or otherwise Word Wide Web (WWW) operates, that is, it transmits and receives data.
Number of users
At the end of 2015, a study was conducted on the basis of which the following data was obtained. The number of Internet users worldwide is 3.3 billion people. And this is almost 50% of the total population of our planet.
Such high rates were achieved due to the distribution cellular networks 3G and high-speed 4G. A important role was played by providers, due to the mass of the introduction of Internet technologies, the costs of the maintenance of servers and the manufacture of fiber optic cables decreased. In most European countries, the speed of the Internet is higher than in African countries. This explains the technical lag behind the latter and non-screens of the demand for the service.
Why is the Internet call worldwide web?
How it is not paradoxically, but many users are confident that the above term and the Internet is the same thing. This is a deep misconception that hovers in the heads of many users is caused by the similarity of concepts. Now we will deal with what.
The World Wide Web is often confused with a similar phrase "worldwide network". It is a certain information based on the Internet technology.
WORL HISTORY WIDE WEB
By the end of the 1990s, the world is finally approved by the NSFNET domination over the ARPAnet technology. Oddly enough, one scientific center was engaged in their development. By order of the US Military Ministry, ARPNet has been developed. Yes, yes, the first to use the Internet were the military. NSFNet technology was developed independently of public services, practically at pure enthusiasm.
It was the competition between the two developments that became soil for their further development and mass introduction into the world. The World Wide Web Internet has become available to the wide masses in 1991. She had to work somehow, and Berners Lee was engaged in the development of the system for the Internet. For two years of successful work, it has created a hypertext, or HTTP, the famous electronic language HTML and URL. We do not need to go into details, because now we see them as regular links for site addresses.
Information space
First of all, this is an information space, access to which is carried out at the expense of the Internet. It allows the user to have access to data that are on servers. If you use a clear-shaped method, the Internet is a bulk cylinder, and the World Wide Web is what fills it.
Through a program called "browser", the user gets access to the Internet for a serf on a web. It consists of an inclulusal set of sites that are based on servers. They are connected to computers and are responsible for saving, download, data viewing.
Spider networks and modern man
Currently, Homo Sapiens in developed countries has been practically completely integrated with the World Wide Network. We are not talking about our grandparents or about remote villages, where they do not know about some Internet.
Previously, man in search of information went straight to the library. And it often happened that it was not necessary for him, then I had to go to other institutions with archives. Now the need for such manipulations disappeared.
In biology, all types of species consist of three words, so for example our full name Homo Sapiens NEANDERTHalensis. Now you can safely add the fourth word internetiys.
The Internet captures the minds of humanity
Agree, we draw almost all the information from the Internet. In our hands are tons of information. Tell me about such an ancestor, he would greedily buried in the monitor screen and would sit there all his free time in search of information.
It is the Internet that brought humanity to a fundamentally new level, it contributes to the creation of a new culture - mixed or multi. Representatives of different nations mimicarize and adapt, as if merging their customs into one boiler. Where does the final product come from then.
It is especially useful for scientific figures, there is no longer need to gather on consultuals in the country, which is 1000 km from yours. You can exchange experiences and without a personal meeting, for example, through messengers or social networks. And if an important question must be discussed, you can do it through Skype.
Output
World Wide Web is the component of the Internet. Its work is provided thanks to storage servers, which provide information to the user upon request. The network itself was developed thanks to scientists from the United States and their enthusiasm.
The World Wide Web (English. World Wide Web) is a global information space based on the physical infrastructure of the Internet and the HTTP data protocol. World Wide Web has caused a real revolution in information technology and a boom in the development of the Internet. Often, speaking of the Internet, they mean by the World Wide Web. To designate the World Wide Web also use the word web (eng. Web) and the abbreviation "WWW".
World Wide Web form millions web servers Internet networks located worldwide. The web server is a program that is launched on a computer connected to the network. In the simplest form, such a program receives an HTTP request over a specific resource network, finds the appropriate file on the local hard disk and sends it to the network requested to the computer. More complex web servers are capable of dynamically generating resources in response to an HTTP request.
To view information received from a web server, applied on the client computer special program-client - web Browser (Web Browser). Basic web browser function - display hypertext.
The World Wide Web is inextricably linked with the concepts of hypertext. . Hypertext (Hypertext) is a document or system of documents with cross-references ( hyperlinks). By this document, you can navigate not consistently, but by activating hyperlinks, go to them to related to texts or files.
To create, storing and displaying a hypertext, a language is used. HTML (Eng. HyperText Markup Language), language marking hypertext. The work on the markup of the hypertext is called a layout, markup specialists are called web masters.
The HTML file is the most common worldwide web resource. HTML file available to the web server, called " web page" A set of related topics, design or owner of web pages forms web site.
The information in the web may be displayed as passively (that is, the user can only read it) and actively - then the user can add information and edit it. To the methods of active display of information in the World Wide Web include:
Guest books,
Wiki projects
Content management systems.
HTML markup
HTML (Hypertext Markup Language) It is not a programming language, it is a language of formatting, i.e. Fit external view Web page, when supervised it in the browser. To mark the document are used tags. Tags are consisting in angular brackets, and, with rare exceptions, are pairs, i.e. There is an opening and closing tag. For example, to mark the beginning of a new paragraph in the document is tagged
(from paragraph). Then at the end of the paragraph necessarily the closing tag should be put
.When distributing tags, the rule is followed: tags are closed in the order of their appearance. For example, if the word in the text should be highlighted (tag from bold.) and at the same time italics (tag from italic) This can be done in one of the following ways: word , or word .
The following is the text of some HTML document and the result of its display in the browser:
Good time of day, dear visitor !
I hope you got just where they wanted.
Here you will find poems , songs and scenarios To organize any holidays.
And now a special gift for September 1b\u003e
He is accustomed to Pyaterochka -
Russian five and singing.
I always have his diary
Spoils the mood.
Global Internet attracts users with their information resources And services (services), which regularly uses about a billion people in all countries of the world.
The turbulent development of the Internet, which takes place the last 15 years, is primarily due to the advent of the World Wide Web. "World Wide Web" is a free translation of the English phrase "WORLD WIDE WEB", which is often referred to as WWW or Web.
World Wide Web Technology. World Wide Web uses a hypertext technology in which documents are related to each other with hyperlock.
As link signs Web pages can use text fragments that are highlighted by color and underlining as well graphic imageswhich are highlighted by the frame. Activation on the source web page of the reference pointer (for example, by clicking the mouse) causes the transition to the desired Web page (Fig. 6.10).
The World Wide Web - This is hundreds of millions of Internet Web servers containing hundreds of billions of Web pages that use a hypertext technology.
Web page can be multimedia, i.e. may contain various multimedia objects: graphic images, animation, sound and video.
Web page can be interactive, i.e. contain forms with fields that are used when registering users of free email, when shopping in online stores, etc.
Thematically associated web pages are usually presented in the form Web site, i.e. a holistic system of documents related to each other in a single integer using references.
Web page address. Currently, the Internet Web servers stores a huge number of web pages. You can find the web page on the Internet using the Web page address.
Web page address Includes a way to access the document and the name of the Internet server on which the document is located.
The HTTP HTTP Hypertext Transfer Protocol (Hyper Text Transfer Protocol) is used as a method of accessing Web pages. When writing a protocol after its name, a colon and two inclined traits are followed: http: //
As an example, write the address title page Web site "Informatics and Information Technologies". The page is located on the IIT.metodist.ru server, therefore, the address takes the form:
http://iit.metodist.ru.
WWW-information web: Internet names system, domain name and IP address.
The World Wide Web (eng. WORLD WIDE WEB.) - a distributed system that provides access to interconnected documents located on various computers connected to the Internet. For the designation of the World Wide Web also use the word web (eng. web. "Web") and abbreviation Www..
World wide web forms hundreds of millions of web servers. Most worldwide web resources are based on hypertext technology. Hypertext documents posted in the World Wide Web are called web pages. Several web pages made by the common theme, design, as well as related links and usually located on the same web server are called the Web site. Special programs are used for downloading and viewing web pages - browsers (eng. browser.).
World Wide Web caused a real revolution in information technology and an explosion in the development of the Internet. In everyday speech, speaking about the Internet, you often mean by the World Wide Web. However, it is important to understand that this is not the same thing.
World Wide Web form millions of web servers on the Internet worldwide. Web server is computer programThe computer that is connected to the network connected to the network and using the HTTP protocol for data transmission. In the simplest form, such a program receives an HTTP request over a specific resource network, finds the appropriate file on the local hard disk and sends it to the network requested to the computer. More complex web servers are capable of responding to a HTTP request to dynamically generate documents using asset and scripts.
To view information received from the web server, a special program is applied on the client computer - a web browser. The main function of the web browser is the display of a hypertext. The World Wide Web is inextricably linked with the concepts of hypertext and hyperlinks. Most of the information in the web is a hypertext.
To create, storing and displaying a hypertext in the World Wide Web, the HTML language is traditionally used (eng. HyperText Markup Language. "Hypertext markup language"). Work on the creation of (markup) of hypertext documents is called a clash, it is made by a webmaster or a separate specialist in the markup - the vertellor. After HTML markup, the resulting document is stored in a file, and such HTML files are the main type of worldwide web resources. After the HTML file becomes available to the web server, it starts to call "a web page". Set of web pages forms a website.
Hypertext web pages contains hyperlinks. Hyperlinks help worldwide web users easily move between resources (files) regardless of whether resources are on local computer or on a remote server. To determine the location of resources in the World Wide Web, URL Resource Locators are used (eng. Uniform Resource Locator). For example, a full URL main page The Russian section of Wikipedia looks like this: http://ru.wikipedia.org/wiki/Nagal_star. Such URLs combine the technology identification technology URI (English. Uniform Resource Identifier"Uniform resource identifier") and DNS domain name system (eng. DOMAIN NAME SYSTEM.). The domain name (in this case is ru.wikipedia.org) as part of the URL indicates a computer (more precisely - one of its network interfaces), which executes the code of the desired web server. The URL of the current page usually can be seen in the address bar of the browser, although many modern browsers prefer the default to show only the domain name of the current site.