远程控制家用电器摘要:基于单片机AT89S52和双音频解码集成电路MT8870，设计了通过电话线路遥控家用电器的智能装置。讨论了该装置的工作原理、硬件配置、软件设计及基本功能，经样机调试试验证明,其各项性能指标良好,具有较高的实用价值。关键词:双音频； AT89S52； MT8870； 远程控制Abstract: Base on In this paper a remote intelligent controller using telephone is introduced, which bases on single chip AT89S52 and integrated DTMF receiver. The system can examine the bell torealize the intention of auto hanging up ,demodulating the DTMF signal, checking the password marking the system ,limiting the user times ,etc. The c
