dda做的高精度波形发生器，不看还不知道能这么做，悲剧啊-dda do high-precision waveform generator, do not know can not see the tragedy ah

AD9850内含可编程DDS系统和高速比较器，能实现全数字编程控制的频率合成,信号发生器具有输出频率范围宽，可以输出正弦和方波两种波形，51代码-AD9850 DDS system and includes a programmable high-speed comparator, to achieve all-digital programming control of the frequency synthesizer, the signal generator has an output