With the popularity of telephone and home appliances, more and more people want to control household appliances can use telephone. This paper AT89C51 microcontroller, with the new DTMF decoder chip and voice circuits, the successful implementation of the phone control household appliances.随着电话和家用电器的普及，越来越多的人希望能用电话来控制家电。本文采用AT89C51单片机，配合新型的DTMF解码芯片和语音电路，成功实现了电话对家用电器的控制。
