COMMUNICATION SYSTEM
communication is a simply the basic process of exchanging information.
The electronic equipment which are used for communication purpose,are called communication equipment. Different communication system are line telephony and line telegraphy,radio telegraphy,radio telegraphy and radio telegraphy,radio broadcasting,point-to-point communication and mobile communication,computer communication, radar communication,television broadcasting,radio telemetry,radio aids to navigation,radio aids to aircraft landing etc.
The earliest communication system namely line telegraphy originated in eighteen forties. In addition to this, line telephony came a few decades later whereas radio-communication could become possible in the beginning of twentieth century on invention of triode valve.
Radio communication was further greatly improved during World War II.It became more widely used through the invention of transistor,integrated circuits(ICs) and other semiconductor device in the subsequent years.Also,in recent years,communication has become more widespread with the use of satellites and fiber optics.
THE COMMUNICATION PROCESS:
In the most fundamental sense,communication involves the transmission of information from one point to another through a succession of process as listed ahead:
(i) The generation of a thought pattern or image in the mind of an originator.
(ii)The description of that image,with a certain measure of precision,by a set of oral visual symbols.
(iii)The encoding of these symbols in a form that is suitable for transmission over a physical medium of interest.
(iv) The transmission of the encoded symbols to the desired destination.
(v)the decoding and reproduction of the original symbols.
(vi)The recreation of the original thought pattern or image,with a definable degradation in quality, in the mind of a recipient.
communication system are line telephony and line telegraphy,radio broadcasting,point-to-point communication and mobile communication ,computer communication,radar communication,television broadcasting,radio telemetry etc.
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