本源码是基于VHDL语言环境下的基础实验源码，共分七个部分。分别是：序列检测器、数字密码锁、四位有符号数除法、同步FIFO、DPLL的设计以及Cordic 算法实现。对于VHDL的初学者具有极大的参考价值。-The source is based on experimental basis source VHDL language environment, it is divided into seven sections. They are: the sequence detector, di