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本设计使用msp430单片机作为主控芯片，由于红绿蓝三原色理论上可以搭配出自然界所有的颜色，因此通过调节电位器或者改变输入声音的频率两种方式改变R、G、B三路PWM信号占空比，从而使LED显示出不同的颜色。
