我朋友用存表查表法制作的波形发生器，无极调频调幅，并在LCD上能显示幅值频率参数及波形，功能能够实现，效果很好，有详细报告，注释，及流程图，用纯软件编写，硬件要求很少-My friend made for table look-up table waveform generator, AM FM The Promise and LCD can display the amplitude of the frequency and waveform parameters, functions can