MFC实时脉冲曲线显示和对比，通过傅里叶级数展开脉冲函数用正弦表示，对比脉冲加上了随机求余误差。用不同的颜色表示-MFC real-time pulse curve and compared with a sine Fourier series expansion of the pulse function, contrast pulse with a random seek I error. Represented in different colors

函数发生器的da模块编写代码。可以实现波形：正弦波、方波、锯齿波等。-The function generator da modules write code. Waveforms: sine wave, square wave, sawtooth, etc..

正弦函数的离散傅里叶变换，输出傅里叶变换系数-Discrete Fourier sine transform, Fourier transform coefficients output