Perfect Computer Notes

what are the advantages and disadvantages of internet Internet has many advantages for users along with some disadvantages too. Let us discuss the benefits of using Internet first. ADVANTAGES OF INTERNET what are the advantages and disadvantages of internet Following are the main advantages of internet: 1. THE WORLD WIDE WEB This is also called web or www or 3w. The collection of all web pages in all web sites on internet is called www. These web pages provide us information. 2. E-MAIL E-mail stands for electronic mail. It is the most popular, cheap, easy and fastest mailing service. We can send and receive messages on internet with in seconds or minutes. 3. NEWSGROUPS Newsgroups are discussion groups on internet. They are used for free exchange of information. 4. MAILING LISTS Mailing lists provide information to the users on the selected topics through email. Mailing lists are maintained by different companies. 5. ONLINE BANKING Several banks are onlin

SERVICES PROVIDED BY INTERNET Important services provided by internet are as the following: 1. THE WORLD WIDE WEB This is also called web or www or 3w. The collection of all web pages in all web sites on Internet is called www. These web pages provide us information in the form of text, pictures, audio and video formats etc. 2. E-MAIL E-mail stands for electronic mail. It is the most popular, cheap, easy and fastest mailing service. We can send and receive messages on internet with in seconds or minutes. 3. EMAIL DISCUSSION GROUPS These are used to discuss different topics with other people by email. 4. NEWSGROUPS Newsgroups are discussion groups on internet. They are used for free exchange of information. A user sends a message to the news group site. Other users read this message from this site and reply. Newsgroups are provided by special computers called news servers. 5. ECOMMERCE It stands for Electronic Commerce. E-commerce means to carry out business dealings by internet

INTERNET Internet is the network of networks around the world. It is made up of thousands of smaller networks. It is a global communication system. We can send and receive information from a city or country to another through Internet. Main components of Internet are computers, communication media and modem etc. Modem is used to send and receive information though telephone lines.     Internet provides following main facilities:                ·    E- mail                ·    Chat                ·    Searching jobs                ·    Advertising for business                ·    E-commerce                ·    Searching information To use Internet we must have  ·    suitable computer  ·    telephone line  ·    modem  ·    web browser (for example, internet explorer)  ·    Internet connection or scratch card of an ISP HISTORY OF INTERNET 1) ARPANET   The seeds of internet were planted in 1969 by Advanced Research Projects Agency (ARPA) of US department of