利用mega8控制CM8870和ht9200以及mc34018实现电话功能-Use mega8 control CM8870 and ht9200, as well as to achieve mc34018 phone features

DTMFDecoding with a PIC16F84 CM8870

Two line station with CM8870 & pic16F819 .

In the project the robot is controlled by a mobile phone that makes a call to the mobile phone attached to the robot. In the course of a call, if any button is pressed a tone corresponding to the button pressed is heard