说明：  DDS芯片AD9850 电子设计省赛又至，很多人在忙着调式AD9850，或许只因为它去年在赛题中的主角地位。与此，小厮将自己曾经的一点经验和理解写出来，与众共享。
(DDS chip AD9850 electronic design has to match the province, many people in the busy mode AD9850, perhaps because it only tournament title last year in the status of the protagonist. With this, the servant would be the point they have experience and understanding of written, shared with the public.)