【说明】
设8位二进制代码B0B1……B7中的最高位B0为奇偶校验位。对于任何给定的代码B1B2……B7可按下式计算偶校验位：
B0=B0⊕B1⊕……⊕B7
其中，“⊕”表示“”异或运算。下面的流程图描述了计算偶校验位的过程。
【流程图】
注：流程图中，循环开始的说明按照“循环变量名：循环初值，循环终值，增量”格式描述。
【问题1】
将流程图中的（1）~（4）处补充完整。
【问题2】
若按下式计算奇校验位，则上述流程图中的（1）处应填__（5）__。
B0=B0⊕B1⊕……⊕B7 ⊕1
正确答案及解析
正确答案
解析
（1） 0
（2） 1，7，1
（3） Bi
（4） B0
（5） 1
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