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About the Pictures Image Gallery
Data transmission, digital transmission or digital communications is the physical transfer of data (a digital bit stream) over a point-to-point or point-to-multipoint communication channel. Examples of such channels are copper wires, optical fibres, wireless communication channels, and storage media. The data is represented as an electro-magnetic signal, such as an electrical voltage, radiowave, microwave or infra-red signal.
Data transmission Photo List