Computer communications or computer network is the transmission of data from one computer to another, or from one device to another. A communications device is any machine that assists data transmission.
Communications networks are essential attribute of the information society with high socio-economic value as they contribute to the correct operations of many critical services (from health-care to finance and transportation). Internet is the core of today's computer-communication. This has transformed the Internet, from a robust network for data transfer between computers, to a global, content-rich, communication and information system where contents are increasingly generated by the users, and distributed according to human social relations.
A computer communication networks is a system containing any combination of computers, computer terminals, printers, audio or visual display devices, or telephones interconnected by telecommunications equipment or cables: used to transmit or receive information. (Random House Unabridged Dictionary, 2d ed)
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