Question

求证明 逻辑电路 ABC'+(ABC+AB)'=(ABC)'

Answer 1

(ABC+AB)' = (AB(C+1))' = (AB)' = (AB)'C + (AB)'C'ABC' + (AB)'C + (AB)'C' = (AB+(AB)')C' + (AB)'C = C' + (AB)'C = C' + A'C + B'C = A' + B' + C'(常用公式) = (ABC)'