http://www.uelectronics.info/taxonomy/term/268/0 en http://www.uelectronics.info/software-dtmf-decoder <p>DTMF (the phone dialing tones) is often decoded with a special IC. Here is a pure SW implementation in the PIC18F877 chip.<br /> <img src="http://www.uelectronics.info/./sites/uelectronics.info/files/images/dtmf.jpg" alt="" title="" class="image image-_original " width="400" height="260" /></p> <p><a href="http://www.uelectronics.info/software-dtmf-decoder" target="_blank">read more</a></p> http://www.uelectronics.info/software-dtmf-decoder#comments Microchip PIC DTMF PIC16F877 Sun, 06 Sep 2009 10:52:37 +0000 admin 833 at http://www.uelectronics.info http://www.uelectronics.info/dtmf-decoder <p>Decoding DTMF (Dual Tone Multi frequency) with MT8870 chip and AVR x2313 microcontroller.</p> <p><img src="http://www.uelectronics.info/./sites/uelectronics.info/files/images/dtmf2all.jpg" alt="" title="" class="image _original" width="500" height="319" /></p> <p><a href="http://www.uelectronics.info/dtmf-decoder" target="_blank">read more</a></p> ATMEL AVR ATtiny2313 DTMF Thu, 10 Jul 2008 17:05:45 +0000 admin 244 at http://www.uelectronics.info