这是基于VHDL的编程练习，适合于初学者学习VHDL编程，通俗易懂，简明扼要。

这是基于VHDL的编程练习，适合于初学者学习VHDL编程，通俗易懂，简明扼要。-This is based on the VHDL programming exercises, suitable for beginners to learn VHDL programming, user-friendly and concise.

VHDL数字系统设计和工程实践1，包含原理，真值表和原理图，以及VHDL源代码.-VHDL digital system design and engineering practice, one that contains principles, truth table and schematic, as well as VHDL source code.