Question

数字电路与逻辑设计 3题

Answer 1

(1)

AB' + A'B + A'B'

= AB' + A(B + B')

= AB' + A

= A(B' + 1)

= A

(2)

A' + B' + ABC

= (AB)' + ABC

= (AB)' + C

= A' + B' + C

(3) D .

J = 1,K = 0 时,Qn+1 = 1 ；

J = K = 1 时,Qn+1 = - Qn .