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Transmission Modes


Transmission modes defines the direction of data transmission between two connected devices.



  • Its a one-way communication, where data flows only in one direction from sender to receiver.
  • Eg. Televisions, radios.


  • Its a two-way communication, data flows in both direction but sender and receiver can't transmit and receive at the same time.
  • E.g.: Walkie-talkies, Citizen Band (CB) radios.


  • Its a two-way communication, where both sender and receiver can trasmit and receive at the same time.
  • E.g.: Telephone talk, client and server communication.

Tip Box

Serial transmission

  • Transfers one bit at a time
  • Low performance

Parallel transmission

  • Transfers two or more bits at a time over the line
  • High performance


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