Class- 12
Unit- 16 (Communication System)
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This notes very helpful for Students these notes made by Aniketncert it give about knowledge communication systems
Communication related to transfer data to sender to receiver
Presentation
Correspondence is the demonstration of transmission of data. Each living animal on the planet encounters the need to give or get data continuously with others in the encompassing scene. For correspondence to be fruitful, it is basic that the sender and the beneficiary comprehend a typical language. Man has continually made attempts to improve the nature of correspondence with other human creatures.
Dialects and techniques utilized in correspondence have kept developing from ancient to current occasions, to satisfy the developing needs as far as speed and multifaceted nature of data. It would be advantageous to take a gander at the significant achievements in occasions that advanced improvements in interchanges, as introduced .Present day correspondence has its underlying foundations in the nineteenth and twentieth century in crafted by researchers like J.C. Bose, F.B. Morse, G. Marconi and Alexander Graham Bell.
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The pace of advancement appears to have expanded drastically after the principal half of the twentieth century. We can would like to see a lot more achievements in the coming decades. The point of this part is to present the ideas of correspondence, in particular the mode of correspondence, the requirement for adjustment, creation and derivation of sufficiency tweak.
In a communication system, the transmitter is located at one place,the receiver is located at some other place (far or near) separate from the transmitter and the channel is the physical medium that connects them.
Depending upon the type of communication system, a channel may be in the form of wires or cables connecting the transmitter and the receiver or it may be wireless.
The purpose of the transmitter is to convert the message signal produced by the source of information into a form suitable for transmission through the channel.
If the output of the information source is a non-electrical signal like a voice signal, a transducer converts it to electrical form before giving it as an input to the transmitter. When a transmitted signal propagates along the channel it may get distorted due to channel imperfection. Moreover, noise adds to the transmitted signal and the receiver receives a corrupted version of the transmitted signal.The receiver has the task of operating on the received signal.
It reconstructsa recognisable form of the original message signal for delivering it to the
user of information.
