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。-Signed multiplication better approach is to Booth (Booth) algorithms. It uses the operation of addition and subtraction calculations complement data of the product. Booth algorithm to determine from the lower multiplier, according to two data bits determined by the circumstances of addition, subtraction, or simply shift operation.