Internet is a modern and recent communication device. In 1960, the defence service of Pentagon of the USA used it for the first time. The computer experts of the defence service introduced a system of internal relation among four different computers. This system was called Darpanet. In 1984, National Science Foundation of the USA introduced another system like this for the common people. It was called Nesfonet. Then the improvement of internet was like a fairy tale. In 1993, it was opened for commercial use. Within a short time, millions of people were connected with internet. At present, more than twenty thousand networks are connected with international network. Its users are increasing rapidly in every nook and corner of the world.
Internet is usually used in on-line and off-line methods. A user can connect his computer directly through telephone with any service provider. This very method is on-line method. On the other hand, using a near server as a medium of internet, a user can take the advantage of an internet. It is called off-line internet or E-mail.
Internet serves many purposes. It mainly transmits and receives messages quickly. Message can be sent very quickly in a few seconds through e-mail. E-mail is the cheapest mode of communication. It saves time and costs. It is cheaper even than Fax.
Sitting at home, we can stud at any library of London. We can open necessary books through internet. Even we can print some pages of a book by our computer. When a person in any country wants to read the newspapers and magazines, he can do it easily sitting in his computer. Job seekers can apply to different institutions through an internet. They can send their resume at ease to the intended institutions through a computer on the basis of advertisement. We are able to communicate with foreign doctors and receive essential suggestion. We can meet friends and relatives and give proposals of marriage using a computer network. Trade and commerce, controlling traffic signals, shopping, office management and entertainment are provided with great success through an internet connection. In addition to them, diagnosis of disease along with many other affairs of the day to day life is executed by internet.
In 1993, Bangladesh first stated using internet. Information services network started internet service at Dhaka for the first time. Next came forward the Grameen Cybernet with a view to sending IT to the grass root level. Bangladesh T and T Board has allowed five institutions to setup VSATS. Internet service was primarily limited to E-mail. On-line connection was introduced on 15 June, 1996. In 2002, sixty thousand internet connections in total were given to the country.
Internet is the magic lamp of Aladin. Its multi-purposed uses are undeniable. Its advantages are numberless. But we cannot ignore its demerits too. The coarseness and indecency of the forbidden world of internet has been leading our young generation to their moral decadence. Blackmailing, virus infection and stealing of information cause great harm to the users of computers.
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