• DTMF IC
    You can use HT9170B or MT8870 as DTMF decoder IC with 8051.
  • dtmf decoding
    hey!! i am trying to decode a DTMF tone by using a decoder chip then i send it to the microcontroller at89s52 and then display the output in the lcd but when the key on the telephone set is pressed...
  • morse Code De Coder
    Has anyone seen a project, that Has a microphone, And a display That will decode Morse code? I thought that would Be a very handy tool That bloaters and other people that Still use Morse code could...
  • Verifying DTMF Algorithms
    Hello My goal is to create an application that recognises DTMF signals using a ARM7 uC (I have LPC2368). After looking over background theory (DFT) and after studying several code examples for...
  • DTMF tone generation
    Hi, I want to generate DTMF tones using 89S52 controller. I am using a crystal of frequency 11.059MHz. Can anybody help to proceed further.