TQ2440 use the buzzer to sing features: music to everyone according to their favorite songs written by the author in accordance with the rules (very simple), one of the notes included in an array which you can customize your favorite songs

Example4.4.mcp
关于pwm占空比的数据分析.docx
老鼠爱大米.gif
乐谱频率的数值分析.txt
祝你平安.gif

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