C8051F020控制9910的程序，1G输入，输出一个正选拨，调试通过-The C8051F020 Control 9910 procedures, 1G input, output a selection of new members, through debugging

用 AD9910实现的DDS 线性调频信号,调试已通过 可以使用(DDS LFM signal realized by ad9910 has passed debugging and can be used)