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JEE Main 2026 Preparation: Question Papers, Solutions, Mock Tests & Strategy Unacademy » JEE Study Material » Physics » Basics Elements of Communication System

Basics Elements of Communication System

Introduction, the definition of communication system, example of communication system, types of communication system, analog communication system, digital communication system, basic elements of a communication system includes a source of information, input transducer, modulators, channel, receiver, and output transducer.

Table of Content
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Communication means the transmission of information from one person to another person. It means sending, receiving, and processing information between two or more devices. A collection of messages from devices that work together to establish a communication between the sender and receiver is known as a communication system.  A communication system makes life easier. It transmits our feelings, emotions, and messages from one person to another person. Examples of communication systems are radio, television, mobile communication, public switched telephone networks, computer communication, the internet, etc. 

The information source, input transducer, transmitter, channel, receiver, output transducer, and destination are the fundamental components of a communication system.

Definition:

When two or more people communicate through a sound signal, it is known as a communication system. Examples of communication systems are the internet, radio, television, computer, etc.

Types of communication systems: According to signal specification or technology, the communication system is classified into two categories are as follows:

  • Analog communication system: An analog communication system is a communication system where the information signal being sent from one point to another point can only be described as an analog signal. An example of an analog communication system is broadcasting and telephone transmission, etc.
  • Digital communication system: It is a communication system where the messages generated by the source, which are usually in analog format, are converted into digital format and then transmitted. The received digital data is converted back to analog form at the receiver end, which is an approximation of the original message.

Basics elements of communication system:

Basics elements of the communication system are as follows:

  1. Information source: The information is transferred in many ways like–
  1. Human speech
  2. Picture format
  3. Words
  4. Email, etc.
  1. Input transducer: This transducer device is used to convert the sound signal into another form of signal is known as an input transducer. Examples of input transducers are microphones, cameras, keyboards, and mouse, etc.
  2. Transmitter: The transmitter is a device that converts a signal into an electric signal for transmission over a given channel or medium. This technique is known as modulation. The act of modulation amplifies the signal strength without changing the parameters of the original signal. Examples of the transmitter are signal amplifiers, noise filters, modulators, etc.
  3. Communication channel: A communication channel is a medium where the signals are transferred from one end to another end. The communication channel is wired and wireless. Examples of wired channels include cables, fibre optic cables, and twisted-pair telephones lines. 

Examples of wireless channels include air, water, vacuum, etc.

  1. Noise: It is an unwanted signal that enters the communication system through the communication channel and degrades the transmitted signal.
  2. Receiver:- The receiver is a device to which the signal is passed through the communication channel then captured by a receiver. An example of the receiver is television etc.
  3. Output transducer: The output transducer is present outside of the communication system. It converts the electric signal to the non-electric signal or native form.  Examples of output transducers are loudspeakers, monitors, signals, etc.

Conclusion:

  • Communication denotes the transmission of data from one individual to another. It means sending, receiving, and processing information between two or more devices. 
  • Communication is a system that carries our messages or information from one person to another person.
  • The communication system makes our life easier. It transmits our feelings, emotions, and messages from one person to another person.
    • An analog communication system is where the information signal sent from one point to another point can only be described as an analog signal.
    • In a digital communication system, the messages generated by the original source, which are commonly in analog form, are transformed into digital format and then communicated. At the receiver end, the received digital signal is converted back to analog data, which is an approximation of the original information.
    • The communication system enables the successful communication of information or any other important data between source and destination. The free flow of information between the sender and the receiver takes place because of the communication system. The flow of information can be between two individuals or between two devices, etc.
  • Application of communication systems is telephone channels, public switched telephone networks, intranet and extranet, digital audio transmission, digital audio recording, etc.
  • The communication system includes television, radio, telephone, smartphone, internet, etc.
  • The information source, input transducer, transmitter, channel, receiver, output transducer, and destination are the fundamental components of a communication system.
  • Noise is an unwanted signal that enters the communication system through the communication channel and degrades the transmitted signal.

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