双音频DTMF拨号程序MT8888/MT8880最全期刊资料，有详细电路图+源程序，共计30多篇。,DTMF DTMF dial-up procedures for information MT8888/MT8880 most journals, a detailed circuit diagram+ source code, for a total of more than 30.

家庭报警系统的汇编代码，系统以89C51系列单片机为核心，通过MT8888拨打电话语音报警。-This paper introduces the design of intelligent controller using public telephone network to transmit information, in the speech circuit and hintsUser and system of communication between whenever and whe