The music alarm clock from SCM system is the smallest system and the expansion of LED display circuit and voice circuit .
该音乐闹钟系统是由单片机最小系统及扩展LED显示电路和语音电路组成。
The music alarm clock from SCM system is the smallest system and the expansion of LED display circuit and voice circuit .
该音乐闹钟系统是由单片机最小系统及扩展LED显示电路和语音电路组成。
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