题目内容


如图所示是逻辑电路图及其真值表,此逻辑电路为                             门电路,在真值表中X处的逻辑值为           .   

输入           输出

A                B           Z

0                 0           0

0                 1           l

1                 0           X

1                 1           l

                                                                                                             

                                                                                                                                       

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