- The Internet is a collection of local, regional, national, and international computer networks.
- The Internet evolved with four computers into a vast information network that connects millions of microcomputers, minicomputers, and mainframe computers.
- The Internet is decentralized by design and, remarkably, this anarchy by design works well.
- An Internet Service Provider (ISP) charges an ongoing fee for providing Internet access.
- The ISP provides the user with communications software (such as e-mail) and a user account.
- The user supplies a modem that connects the computer to the users’ phone line.
- The users’ computer dials the ISP’s computer and establishes a connection over the phone line. Once connected the ISP routes data between the users’ computer and the Internet.
- The Internet connects millions of people through a collection of computer networks.
- The World Wide Web (WWW) was created in 1990.
- WWW allows users to browse through the information available on computers around the world.
- WWW consists of documents called Web pages that contain information on a particular topic.
- The link is a reference to another document on World Wide Web.
- Every Web page is stored as an HTML (HyperText Markup Language) document.
- HTML is the standard that controls the working of WWW.
- HTML is an SGML document type definition that determines how Web pages are formatted and displayed and thus enables information to be exchanged on the World Wide Web.
- Standardized General Mark-up Language (SGML) is a Metalanguage that can be applied to documents in order to maintain their structure and context.
- An HTML document contains special instructions called HTML tags that tell a Web browser how to display the text, graphics, and background of a Web page.
- Web browsers are used to view Web pages, transfer files between computers, access commercial information services, send e-mail, and interact with other Internet users.
- A web browser is a software application that enables a user to locate and view pages on a Web site.
- To request a Web page the user either types in the URL (Uniform Resource Locator).
- URL is a global address of documents and other resources on the World Wide Web. The home page is the main page of a Website.
- A home page is similar to the title page and table of contents in a book. It identifies the site and contains links to other pages at the site.
Users Today : 466
Total views : 469586