The Internet is a global computer network made up of smaller computer networks; it has been called a "Network of Networks."
These smaller networks include:
Local Area Networks (like networked offices or computer labs, and campus-wide networks)
Wide Area Networks (like city-wide networks)
State and Regional Networks (including regional service providers and others)
National and International Networks
There is no one inventor of the Internet. The Internet was created in the 1960s as a huge network linking big university and government computers. The science behind the Internet was invented during the Cold War, when the United States was in competition against Russia for weapons and technology. So the Internet is actually pretty old--around forty years. Much of Internet’s initial development was supported by American governmental research and network development (beginning with the American military's ARPANET in 1969). In fact, email has been around since 1972! In 1989 that Tim Berners-Lee, a scientist at the European Laboratory for Particle Physics in Geneva, proposed the World Wide Web. Now Internet Service Providers (ISPs) offer Internet access to their clients, at costs ranging from Rs 150/- per 6 months to hundreds of rupees per year, depending on the
types of service they offer.
