A Computer Network

A Computer Network

A computer network is a collection of computers all connected together so they can share information, or talk to each other. This allows the people using the computers to collaborate on tasks by allowing them access to the same electronic documents, and allowing them to send electronic messages to each other. The figure shows that each computer (circles in the picture) talks to the others through a router, which sends messages from one computer to another in the appropriate way. Note that routers can also connect one network to another. This is what makes the Internet so powerful: the connection of many smaller networks.
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