比较好的带符号数乘法的方法是布斯(Booth)算法。它采用相加和相减的操作计算补码数据的乘积。Booth算法对乘数从低位开始判断，根据两个数据位的情况决定进行加法、减法还是仅仅移位操作。判断的两个数据位为当前位及其右边的位(初始时需要增加一个辅助位0)，移位操作是向右移动。-Signed multiplication better way to Booth (Booth) algorithm. It uses the sum and subtraction calculations complement the operation of the data product. Booth algorithm multiplier from the lower to the judge, according to the two data bits decide to add, subtract, or just shift operation. The two bits of data to determine the current position and the right bit (the initial need to add an auxiliary position 0), the shift operation is right.