Reasons Why People Use the Internet

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What is the Internet, and how does it work?

The Internet, including the World Wide Web, is perhaps the single most important invention to impact on elementary, secondary, and higher education in today's world. If parents are to understand how their children use technologies for learning, they must understand some things about the Internet and the Web. This section of the San Diego Public Library site offers information for parents on various aspects of this invention.

What is the Internet?

The Internet, in simplest terms, is the large group of millions of computers around the world that are all connected to one another. These computers are connected by phone lines, fiber optic lines, coaxial cable, satellites, and wireless connections.

When you log on to the Internet you are given access to many of the other computers that are connected around the world.


A global network connecting millions of computers. More than 100 countries are linked into exchanges of data, news and opinions. Unlike online services, which are centrally controlled, the Internet is decentralized by design. Each Internet computer, called a host, is independent. Its operators can choose which Internet services to use and which local services to make available to the global Internet community. Remarkably, this anarchy by design works exceedingly well. There are a variety of ways to access the Internet. Most online services, such as America Online, offer access to some Internet services. It is also possible to gain access through a commercial Internet Service Provider (ISP).

The Internet is a global system of interconnected computer networks that use the standard Internet protocol suite (TCP/IP) to serve billions of users worldwide. It is a network of networks that consists of millions of private, public, academic, business, and government networks, of local to global scope, that are linked by a broad array of electronic, wireless and optical networking...
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