此为本人学习VHDL语言时的笔记，内容非常详细，对于初学EDA技术的人来讲是很好参考知识。其中包括简单的编程和较复杂的编程，很有用的东西。-This is my notes when learning VHDL language, the content is very detailed and EDA technologies for the beginner who is a good reference in terms of knowledge. These include simple programming and more complex programming, useful things.