介绍了两个数字和数量B作为输入。向量是输出和它包含结果如果有特殊情况,否则未定义。最后,启动信号时看启用或禁用加法器块是否需要。 -Both number A and number B are introduced as inputs.Vector S is one of the outputs and it contains the result when there is a special case,otherwise undefined. Finally,enable signal