Question

数字电子内容ABC+非A+非B+非C=1怎么证明啊

Answer 1

注：A表示非A

原式 = ABC + A(BC + B + C) + B + C 注：BC + B + C = 1

= ABC + A)BC + A)(~B + C) + B + C

= BC + B + C + A)(~B + C)

= BC + B(C + C) + C + A)(~B + C)

= BC + BC + C + C + A)(~B + C)

= C + C + C + A)(~B + C)

= 1 + C + A)(~B + C)

= 1