world wide web (www)

The 'World Wide Web' is a framework for accessing the linked documents spread over millions of computing devices over the internet.

WWW was introduced in 1989, by the English Physicist, Sir Tim Berners Lee. The web creators wanted to create a simple way to provide and access different types of document on the network, without having to search through indexes or directories of files or without copying documents from one computers to another before viewing them. To do so, they established a way to 'link' documents that were stored in different computers on the network but under a single from and thus, WWW evolved.

The World Wide Web (WWW) is a service of information in combination of text, photographs, graphics, audio, video, etc. that are presented on the internet.

   

It allows the multimedia and hypertext files to be displayed and linked on the internet. Before WWW, internet was mainly used for obtaining textual information.

Due to its distinct features, the popularity of WWW is increasing day by day.

Features of WWW

User Friendly: WWW resources are users friendly and can be used easily with the help of web browser.

Hypertext and Hyperlinks: Hypertext coordinates communication and establishes link among web pages which incorporates text, images, audio, visuals and dynamic links. 

While browsing, some parts of the document are often highlighted with underline or displayed in special colour. Such highlighted words that provide links are termed as hyperlinks. WWW supports such hypertext and hyperlink files and thus enables easier surfing of the net.

Multimedia documents: Multimedia documents are the information in the form of audio, video, graphics, animations and text which are viewed pages. WWW allows and supports the internet users to create, link or display multimedia web pages.

Interactive: WWW provides graphical interface. It supports and enables easy and convenient interaction between the users and the srevers through hyperlinks and input boxes like radio buttons, check boxes, text boxes etc. 

Accessibility: WWW is accessible by anyone irrespective of location, caste, community, nationality, profession, physical disability etc. A user just needs computers, modem and internet connection.

Caching: If a user re-visits the same web pages  after a very short interval, it may not be needed to recall that data from the sources web server. Caching enables to store data in memory. It allows to revisit or re-browse the same website while operating on the same computer before switching it off.

If the locally cached data are current, it will be reused. In WWW, caching helps to reduce the quantum of transfer of data (web traffic) on the internet.

Work Station: It is a computer system which is connected to a network to access remote services such as software information from the server.

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