Monday, April 30, 2012

Computer network


Computer Network: - 

In a communication system by which a computer is connected to another computer is called computer network. In other words a Network is set of technologies-including hardware, software and media that can be used to connect computers together, enabling them to communicate, exchange information, and share resources in real time.

Usefulness: - 

Network allows many users to access shared data and programs almost instantly. When data and programs are stored on a network and are shared, individual users can substantially reduce the need of programs on there own computer. Networks open up new ways to communicate, such as e-mail, instant messaging etc. By allowing users to share expensive hardware resources such as printers, networks reduce the cost of running an organization.   

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