Question

分析下图组合电路,写出输出逻辑表达式,化简,列出真值表并描述其逻辑功能.

Answer 1

F = ( (A+B)' (A' + B'))'

= (A + B) + (A' + B')'

= A + B + AB

= A + B

或门.

A B F

0 0 0

0 1 1

1 0 1

1 1 1