Accessories (III)

Internet 

Internet is an extension of the Network System to the entire world.  It is an electronic highway that connects various networks around the world.  These networks belong to government agencies, universities, libraries and big business houses.  Having been connected to Internet, a user can send messages (electronic mail), share files and search a database.  A database is a collection of related information.  Like any of the information service, the Internet is also a pay-for-use system.   

In order to be connected to the Internet, a user needs to be linked to a Local Service Provider and open an account with him.  Then, he can approach the Provider’s computer by means of a modem.  The Provider’s computer is connected to the Internet.  So, through it, the user also gains access to the Internet.   

How does the Internet work

In order to follow how the Internet system works, go through the following steps that explain what a computer connected to the Internet system has to do to get information through this system.   

1)   A user has to use a program called telnet to get access to the other computers on the Internet.

2)   To gain access to another computer, the user has to type the address of that computer.  This address is called hostname. 

3)   Soon, it is on-line and in link with the host PC. 

4)   When the link has been set up, the user types in commands to make the system do what he wants – view available files, upload a message, download a file etc..

5)   The user can also gain access to the news group to get information on a particular topic.

6)    When the user is through his job, he logs off (disconnects) the link and ends up the access. 

See also Computer Networks; Area Network; Network Connections;  World Wide Web; Electronic mail; Internet 2 for more information about The Internet