What is World Wide Web

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The World Wide Web
The World Wide Web (called WWW or W3 in short) is the most popular and promising method of accessing the Internet. Main reason for its popularity is use of a concept called hypertext. Hypertext is a new way of information storage and retrieval that enables authors to structure information in novel ways. An effectively designed hypertext document can help locate desired type of information rapidly from vast amount of information on the Internet. Hypertext documents enable this by using a series of links. A link is shown on screen in multiple ways such as a labeled button, highlighted text, or different color text than normal text if your computer has color display, or author-defined graphic symbols. A link is a special type of item in a hypertext document connecting the document to another document that provides more information about the linked item. The latter document can be anywhere on the Internet (in the same document in which the linked item is, on the same computer in which the former document is, or on another computer at the other end of the world). By “connect”, we mean that a user simply selects the linked item (using a mouse or key command) and the user sees the other document on his/her computer terminal almost immediately.The WWW uses client server model and an Internet Protocol called HyperText Transport Protocol (HTTP in short) for interaction between computers on the Internet.Any computer on the Internet using the HTTP protocol, is called a Web Server, and any computer accessing that server is called a Web Client. Use of client-server model and the HTTP allows different kinds of computers on the Internet to interact with each other. For example. a Unix workstation mav be a web server and a Windows PC may be a web client, if both of them use the HTTP protocol for transmitting and receiving information.