Basic Definition of Communication and explanation.

Communication is the basic process of exchanging information.

Communication is required for the human to convey their thoughts, ideas, feelings, orders, news, etc. In the beginning, the information could only be transmitted over a short distance, maybe through the spoke world.

The obvious limiting factor begins the range over which man can shout. This was enough until man began to live in a larger and larger social group which made it obligatory for a man to have rapid and long-distance communication modes or methods.

Electronic Communication begins with electricity was discovered. the well-known forms/means for electronic communication such as telephone radio television have increased our ability to share information.

telecommunication involves the conversion of massage which may be in the form of words or codes symbols which get converted into electrical voltage or current and varies with time. It is due to carry the information from one end to another end, such electrical quantities are termed as signals.

 These signals are then transmitted over the communication system. to receive these signals, we can use different odes/methods, where they are converted back to the original form.

Computers play an important role in communication nationwide or worldwide. Communication through a computer in the form of the internet has made a revolution in Electronic Communication.

Block Diagram Of an Electronic communication System.

The basic components of a communication system are information source, transmitter, communication channel or medium through which signal propagates, receiver, and the destination where the original massage.

electronic Communication system
electronic Communication system

#Information Source

  • Communication System has to communicate a message. This massage comes from an information source. The information itself is that which is  Conveyed. 
  • In most systems, a human generates a message that we call the information or intelligence signal.
  •  The information is generated by humans in the form of sound waves. for electrical communication, this information needs to be conveyed to the more suitable for transmission.



  •  The transmitter has to transmit the information from an information source.
  •  If the information is electric in nature, it is easy to processing and transmission. if the information is in the form of a sound signal, it is necessary the incoming sound signal into electrical variation.
  • Here the microphone is used to convert the sound signals into electrical variation.
  • In long-distance communication, a transmitter is required to and encode the incoming information. 
  • the transmitter is a collection of electronic components and circuits are designed to convert the information into a signal suitable for transmission over a given communication channel

#Communication Channel

  • A communication channel is a medium through which a signal goes from the transmitter to the receiver.
  • The medium between transmitter and receiver may be wireless such as in mobile telephone, radio and receiver may be wireless such as in mobile telephone, radio, and television communication. wireless communication uses an electromagnetic spectrum from one point to another.
  • In brief, the communication channel is either a radio (free-space) wire a fiber-optic channel.
  • Also, note that the team channel is also used t the frequency range allocated to the particular service or transmission such as the television channel.
  • The channel is found that wire or media degrades the signals and causes them to appear many lovers in amplitude at the receiver.
  • Due to this, we require strong signals at the transmitter, so as to get consideration or necessary signal at the receiver. For successful communication amplification of the signal is requires, both at the transmitter and receiver.

#Noise Source

  • Noise is basically unwanted, undesired electric signal along with the desired signal. It is usually of random Character. 
  • Noise In a communication system is undesirable electrical energy that enters through the communication medium and interfaces with the transmitted assage. some nice also produced in the receiver.
  • Sources of noise are atmosphere, electric storms, solar flares, and radiations, etc.
  • many electronic components used in the transmitter and receiver also generate noise.
  • Noise will have its greatest effect when the signal is weak. The signal is a week in the communication channel this means that noise in the channel or at the input to the receiver is most noticeable.


  • The Receiver has to pick-up the desired signals from the channel and passes them to the destination. 
  • There are different types of Reciever in Communication System. 
  • The Types of receiver Depends upon the factor, mainly the type of modulation system in the operating frequency, its range and the nature of output required, etc.
  • The receiver is the collection of electronic components and circuits that accept a transmitted message from the channel and convert it back into a form understandable by a human.


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