文件夹里面有两个文件，一个是单片机，另一个是VHDL，实现的功能是：DDS的实现，单片机负责显示，VHDL负责存储，按键的监测等。-Folder there are two documents, one is single-chip, and the other is VHDL, the realization of the function is: DDS realization, microcontroller is responsible for display, VHDL is resp