256点FFT函数，量化阶输出，用查表方式实现，用凌阳单片机可以进行8khz采样，频谱分析等-256-point FFT function, the quantized step out, be achieved using look-up table, with a single chip can be 8khz Sunplus sampling, spectral analysis

电子设计竞赛中获二等奖，在FPGA中实现的两路自然采样SPWM，原理图输入法设计，1024*八位正弦查找表，带FSK和ASK调制功能，频率范围8KHz~12KHz.-Electronic Design Competition second prize in the FPGA to achieve the two natural sampling SPWM, schematic design input, 1024* eight sine look-up table, with FSK and A