About DTMF, encoder and decoder

anybody tell me what is encoder&decoder and the details about encoder & decoder....

What is DTMF?how it is generate frequency...


  • sauravgoswami
    well suggest any digital communication book u will get your ans!!!
  • Kaustubh Katdare
    Kaustubh Katdare
    Even Wikipedia would do. Any specific questions - post them here.

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