Thursday, October 28, 2010

World Wide Web-WWW

The World Wide Web(Called WWW or W3) is the most popular and promising method of accessing the Internet. The main reason for its popularity is the use of a concept called hypertext. Hypertext is a new way of information storage and retrieval, which enables authors to structure information in novel ways. An effectively designed hypertext documents can help users rapidly locate the desired type of information from the vast amount of information on the Internet. Hypertext documents enable this by using a series of Links. Link can be shown on the screen in multiple ways, such as a labeled button, highlighted text, or different color text than normal text if your computer has a color display, or author-defined graphic symbols. A link is a special type of item in a hypertext document, which connects 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, in the same computer in which the former document is, or in another computer, which is 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 almost immediately sees the other document on his/her computer terminal.

The concept of hypertext can be best illustrated with the help of an example. Let us assume that the screen of your computer terminal has the following hypertext document currently displayed on it:

Naveen Kumar Kumawat is the writer of this blog which provides information about the Computer Science and Internet Bazaar. At Present Kumawat is working at the OffSite Network Operation Center(OffSiteNOC),Jaipur

This hypertext document has the following two links,which are shown on the screen as highlighted (bold and underlined) texts:
1. Computer Science .Let us assume that this link connects the current document to another document, which gives detailed information about Computer Science.
2. OffSite Network Operation Center (OffSiteNOC).Let us assume that this link connects the current document to another document, which gives detailed information about OffSiteNOC and located on jaipur.

Now, if you use your mouse to click anywhere on the link Mail Bazaar of the displayed document, within a few seconds you will find yourself connected to the computer at Computer Science and displayed on your computer screen will be the documents, which gives detailed information about OffSiteNOC of Jaipur.Hypertext documents on the Internet are known as Web Pages. Web Pages are created by using a special language called Hyper Text Markup Language (HTML in Short) .HTML is a subset of the more generalized language called Standard Generalized Markup Language (SGML In short), which is a

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