Circuit Project Electronic

The DTMF decoder can be directly connected to a Serial port to view the digits in HyperTerminal on a computer. The decoder stores the last 234 received digits in EEPROM. The contents of EEPROM can be viewed on the LCD screen via two scroll buttons. Total power consumption is 12mA. The DTMF decoder has two inputs. A RJ11 jack for connecting to the phone line and a 1/8″ audio jack for connecting to a scanner, tape recorder or other audio output device.
Read more original source: http://www.infidigm.net/projects/dtmf2/

This entry was posted on Tuesday, July 8th, 2008 at 11:30 am and is filed under Telephone, microcontroller. You can follow any responses to this entry through the RSS 2.0 feed.