为提高乘法运算速度本设计采用Booth算法，Booth编码算法的优点有两个：一是减少了部分积的个数；二是可同时适用于有符号数运算和无符号数运算。-To improve the speed of multiplication using the Booth algorithm design, Booth encoding algorithm has two advantages: First, to reduce the number of some of the plot Second, ca