Презентация по теме "Modern Technologies"

Modern technology

The Internet has already entered our ordinary life. Everybody knows that the Internet is a global computer network, which embraces hundred of millions of users all over the world and helps us to communicate with each other

The history of Internet began in the United States in 1969. It was a military experiment, designed to help to survive during a nuclear war

Invention of modems, special devices allowing your computer to send the information through the telephone line, has opened doors to the Internet for millions of people

Most of the Internet host computers are in the United States of America

Nowadays the most popular Internet service is e-mail. Most of the people use the network only for sending and receiving e-mail messages

In many countries, the Internet could provide businessmen with a reliable, alternative to the expensive and unreliable telecommunications systems its own system of communications

However, there are some problems. The most important problem is security. When you send an e-mail, your message can travel through many different networks and computers. The data is constantly being directed towards its destination by special computers called routers. Because of this, it is possible to get into any of the computers along the route, intercept and even change the data being sent over the Internet

Another big and serious problem of the net is control. Yes, there is no effective control in the Internet, because a huge amount of information circulating through the net