📜  门|门模拟 2017 |问题 17

📅  最后修改于: 2021-09-24 05:42:46             🧑  作者: Mango

函数F = (A + B’)(C’ + D)(B’ + C) 的补码是:
(A) A’B + CD’ + BC’

(B) AB’ + C’D + B’C

(C) AB’ + CD’ + BC

(D) AB + BC + CD答案:(一)
说明:使用德摩根定律(断线,改变符号)
的补充
F = F’ = ((A + B’)(C’ + D)(B’ + C))’
F’ = ((A + B’))’ + ((C’ + D))’ + ((B’ + C))’
F’ = A’B + CD’ + BC’

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