Rabu, 18 November 2009

Connecting a Computer to the Internet

Before loading a Web site, you first need to connect to the Internet.

To connect to the internet, you need the following :
  • Access to phone line
  • A modem
  • An Internet account provided by an Internet Service Provider (ISP)
  • Internet Brwoser
Modem
A modem is a device that helps the computers to communicate using phone lines. Computers can

interpret digital signals, and phone lines can interpret analog signals. Modems caonvert the outgoing digital signals from a computer to analog signals that can be transmitted via telephone cables. Modems also convert the analog signals from a phone line to digital signals for a computer. The speed of a modem at which the data transfer is done is measured in Kbps (Kilo bits per second).

Internet Service Provider
An internet service provider (ISP) is an organization that provides users access to the internet and other related services, such as hosting a Web site and providing space on the Web server to launch a Web site on the Internet. ISP provides users with usernames and passwords, which are required to connect to the Internet.

Internet Browsers
A browser is an application that helps you display and interact with the information the Internet. A browser uses HTTP to display information from the Web server. Mosaic was the first commercially used Web browser. Today, Netscape Navigation and Internet Explorer are the most popular web browsers.

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