The Internet is a network of computer linking many different types of computer all over the would. It is a network of network sharing. A common mechanism for identifying computer,and common set of communication protocol for communication between two computer on the network.
Evolution of Internet
The Internet has its root in the (ARPANET) system of the Advanced Research Project Agency of the USA Deportment of Defense. ARPANET was the first WAN and had only four sites in 1689. The Internet evolved from basic ideas of ARPANET for interconnecting computer, and user used research organization and exchange information.
The Internet grow to become the worlds largest network. It interconnects more the 30,000 network, allowing more then 10 million computer and more ten 150 million users in more the 150 countries around the world to communication with each other. The Internet continues to grow at a riled pace.