采用MSP430G2553和12864液晶实现控制界面，可控制端口输出不同频率的脉冲波形，同时还可测量不同信号的电压值-12864 achieved using MSP430G2553 and control interface, you can control the port output pulse waveforms of different frequencies, but can also measure the voltage values ​ ​ of dif