excess three code

BCD codes and Excess-3 codes is two kinds of populated codes in serial data,The conversions of the two codes is very populated in serial communications.

BCD码和余3码是串行通讯中比较常见的两种编码方式,二者的转换在不同的通讯场合中也经常用到,文章主要介绍二者之间的关系并用Verilog语言实现了二者之间的转换。