Z1=(Y1`Y2`Y4`Y7`)`=Y1+Y2+Y4+Y7=A`B`C+A`BC`+AB`C`+ABC
Z2=(Y1`Y2`Y3`Y7`)`=Y1+Y2+Y3+Y7=A`B`C+A`BC`+A`BC+ABC
ABC Z2Z1
000 0 0
001 1 1
010 1 1
011 1 0
100 0 1
101 0 0
110 0 0
111 1 1
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Z2çé»è¾åè½ï¼ å
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