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 be achieved, the effect is very good, with detailed reports, comments, and the flow chart, with pure software development, hardware requirements rarely