此程序为一实现DDS的程序，很好的用VHDL语言编写。-this is a dds program by VHDL .Tt is a very accutate program.

一些采用FPGA产生信号的一些源代码，对一些初学者有用-some FPGA code

通过FPGA控制DDS(AD9854)输出120M一下的双路正交信号，实现在通信和控制领域的应用。-Controlled by FPGA DDS (AD9854) output 120 m the dual orthogonal signal, realize the application in the field of communication and control.