已知74LS138译码器的输入三个使能端E1=1E2A=E2B=0时地址码A2A1A0=011则输出Y7～Y0是以下哪个11111101101111111111011111111111

74LS138译码器的真值表如下：

| E1 | E2A | E2B | A2 | A1 | A0 | Y7 | Y6 | Y5 | Y4 | Y3 | Y2 | Y1 | Y0 | |----|-----|-----|----|----|----|----|----|----|----|----|----|----|----| | 1 | 0 | 0 | X | X | X | Y7 | Y6 | Y5 | Y4 | Y3 | Y2 | Y1 | Y0 | | 1 | 0 | 1 | X | X | X | Y7 | Y6 | Y5 | Y4 | Y3 | Y2 | Y1 | Y0 | | 1 | 1 | 0 | X | X | X | Y7 | Y6 | Y5 | Y4 | Y3 | Y2 | Y1 | Y0 | | 1 | 1 | 1 | 0 | 0 | 0 | Y7 | Y6 | Y5 | Y4 | Y3 | Y2 | Y1 | Y0 | | 1 | 1 | 1 | 0 | 0 | 1 | Y7 | Y6 | Y5 | Y4 | Y3 | Y2 | Y1 | Y0 | | 1 | 1 | 1 | 0 | 1 | 0 | Y7 | Y6 | Y5 | Y4 | Y3 | Y2 | Y1 | Y0 | | 1 | 1 | 1 | 0 | 1 | 1 | Y7 | Y6 | Y5 | Y4 | Y3 | Y2 | Y1 | Y0 | | 1 | 1 | 1 | 1 | 0 | 0 | Y7 | Y6 | Y5 | Y4 | Y3 | Y2 | Y1 | Y0 | | 1 | 1 | 1 | 1 | 0 | 1 | Y7 | Y6 | Y5 | Y4 | Y3 | Y2 | Y1 | Y0 | | 1 | 1 | 1 | 1 | 1 | 0 | Y7 | Y6 | Y5 | Y4 | Y3 | Y2 | Y1 | Y0 | | 1 | 1 | 1 | 1 | 1 | 1 | Y7 | Y6 | Y5 | Y4 | Y3 | Y2 | Y1 | Y0 |

根据题意，E1=1，E2A=E2B=0，A2A1A0=011，则译码器的输入为：E1=1，E2A=0，E2B=0，A2=0，A1=1，A0=1。从真值表中可以找到对应的输出为11111101。因此，答案为11111101