米特尔
网络 敏迪;加拿大敏迪;加拿大敏迪网络公司
The system uses MT8880 (made by MITEL company) as the decoding chip of DTMF telephone and chip AT89C51 as the microcontroller, so, the circuit is simple and adaptive.
该系统用MI-TEL 公司的DTMF收发器MT8880芯片作为电话双音多频信号的解码核心,用AT89C5 1单片机作主控器,电路简单灵活。