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RS 232 communication is
  • a)
    Full duplex
  • b)
    Half duplex
  • c)
    Simplex
  • d)
    Command response system
  • e)
     
    Not Attempted
Correct answer is option 'A'. Can you explain this answer?
Most Upvoted Answer
RS 232 communication isa)Full duplexb)Half duplexc)Simplexd)Command re...
Concept:
The data flow between the two devices can be in simplex, half-duplex, and full-duplex modes.
Simplex: In Simplex, communication is unidirectional. Only one of the devices sends the data and the other one only receives the data.
Example: A CPU sends data while a monitor only receives data.
Half-Duplex: In half-duplex both the stations can transmit as well as receive but not at the same time. When one device is sending others can only receive and vice-versa
Example: A walkie-talkie.
Full Duplex: In Full-duplex mode, both stations can transmit and receive at the same time.
Example: Mobile phones
Application:
  • RS-232 is a bi-directional (Full duplex) point to point communication link.
  • Two independent channels are established for two-way (Full-Duplex) communication.
  • This can be better understood with the following diagram:
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