Information communication technology

Wide area network(WAN)- It covers large geographical area having state or countries. The internet is the most basic example of a WAN, connecting all computers together around the world.

Types of network in use Today :

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  Personal area network
  
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  Wireless local area network
  
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  Campus area network
  
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  Enterprise private network
  

3. 
   Communication Technology –
   

Information and communication technology has become a revolutionary cornerstone in the education world today. We also use information communication technology in our every day work. Information communication technology in India was started under the national secondary education campaign which was started in December 2004. The word communication has it origin in the English language word communication. Which is made up of Latin-language Communist. The best medium of communication is our voice and language. Information technology has made communication much easier. Internet is the most used in this. Through the internet, we can exchange information anytime and in a short time. The word communication means establishing a commonality between the sender and the receiver. In the words, communication is an effort through which a person participates in another person’s thoughts, feeling and attitudes. The basis of communication is ‘communication’ and communication.
Communication in Ancient Times : The first means of communication was, the human voice but about 3,200Bc writing was invented in Iraq.
Communication 1500-1800 : The next major improvement in communication was the invention of printing. The first newspaper were printed in the 17^th century. The first newspaper in England was printed in 1641.
Communication in the 19thCentury :The telegraph was invented in 1837.Alexander Graham bell invented the telephone in 1876. The first telephone directory in London was published in 1880.The first telephone line from Paris to Brussels was established in 1887.
Communication in the 20^th Century : Communication continued to improve in the 20^th century. In the 1990s new radio stations included Radio5 live 1990 and Classic FM1991. Television was invented in 1925 by john logie baird and the BBC began regular, high definition broadcasting in 1936.Martin cooper invented the first handheld first cell phone in 1973. The first mobile phone call in Britain was made in 1985. In Britain smart phone were introduced in 1996.
Communication in the 21st century : 21^st century the internet became an important form of communication. Today email has become one of the most popular methods of communication.