1.用adc0809进行A/D转换，采集到数字信号D 2.在P1.1上产生周期T为1kHz的pwm波形，其中脉冲宽度Tao由数字信号D决定-1.Conducted with the adc0809 A/D conversion, digital signal collected D 2.In P1.1 to generate the pwm period T for the 1kHz waveform, in which pulse width Tao decision by the d

小直流电机调速控制系统 使用adc0809采样电位器的值，在显示器上显示 产生pwm信号-Small DC motor speed control system