Internet
The Internet was developed in the United States by the "United States Advanced Research Projects Agency" ( DARPA). The Internet was first connected in October of 1969 and was called ARPANET. The World Wide Web was created at CERN in Switzerlandin 1990 by a British (UK) scientist named Tim Berners-Lee.
Today, people can pay money to access the Internet from internet service providers. Some services on the Internet cost nothing to use. Sometimes people who offer these free services use advertising to make money. Censorship and freedom of speech on the Internet can be controversial.
History
Long before the technology existed to actually build the internet, many scientists had already anticipated the existence of worldwide networks of information. Nikola Tesla toyed with the idea of a “world wireless system” in the early 1900s, and visionary thinkers like Paul Otlet and Vannevar Bush conceived of mechanized, searchable storage systems of books and media in the 1930s and 1940s.
Still, the first practical schematics for the internet would not arrive until the early 1960s, when MIT’s J.C.R. Licklider popularized the idea of an “Intergalactic Network” of computers. Shortly thereafter, computer scientists developed the concept of “packet switching,” a method for effectively transmitting electronic data that would later become one of the major building blocks of the internet.
The first workable prototype of the Internet came in the late 1960s with the creation of ARPANET, or the Advanced Research Projects Agency Network. Originally funded by the U.S. Department of Defense, ARPANET used packet switching to allow multiple computers to communicate on a single network.
On October 29, 1969, ARPAnet delivered its first message: a “node-to-node” communication from one computer to another. (The first computer was located in a research lab at UCLA and the second was at Stanford; each one was the size of a small house.) The message—“LOGIN”—was short and simple, but it crashed the fledgling ARPA network anyway: The Stanford computer only received the note’s first two letters.
The technology continued to grow in the 1970s after scientists Robert Kahn and Vinton Cerf developed Transmission Control Protocol and Internet Protocol, or TCP/IP, a communications model that set standards for how data could be transmitted between multiple networks.
ARPANET adopted TCP/IP on January 1, 1983, and from there researchers began to assemble the “network of networks” that became the modern Internet. The online world then took on a more recognizable form in 1990, when computer scientist Tim Berners-Lee invented the World Wide Web. While it’s often confused with the internet itself, the web is actually just the most common means of accessing data online in the form of websites and hyperlinks.
The web helped popularize the internet among the public, and served as a crucial step in developing the vast trove of information that most of us now access on a daily basis
| Internet history timeline |
Early research and development:
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Services on the Internet
The most used service on the Internet is the World Wide Web (which is also called the "Web" or “www”). The web contains websites, including blogs and wikis like Wikipedia. Webpages on the Internet can be seen and read by anyone (unless the page needs a password, or it is blocked).
The second biggest use of the Internet is to send and receive e-mail. E-mail is private and goes from one user to another. Instant messaging (such as AIM or ICQ) is similar to email, but allows two or more people to chat to each other faster.
Some governments think the internet is a bad thing, and block all or part of it. For example, the Chinese government thinks that Wikipedia is bad. Many times no one in China can read it or add to it.Another example of the internet being blocked is in North Korea. Some parents block parts of the Internet they think are bad for children to see.
Dangers on the Internet
- Some websites may trick people into downloading viruses that can harm a computer, or spyware that spies on its users (looks at what they are doing and tells someone else). E-mails can also have harmful files with them as "attachments".
- In internet chatrooms, people might be preying on others or trying to stalk or abuse them.
- The Internet contains content that many people find offensive such as pornography, as well as content intended to be offensive.
- Criminals may steal people's personal information or trick people into sending them money.
I hope this post help you to get Information about Internet.
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