用电路做加法

In A IN B Out
0 0 0
0 1 0
1 0 0
1 1 1

1 0
0 1

真值表
A B C Output
0 0 0 0
0 0 1 0
0 1 0 0
0 1 1 0
1 1 1 1
1 1 0 1
1 0 1 1
1 0 0 0

S R X Y
1 1 0 1
0 1 1 0
1 1 1 0
1 0 0 1
1 1 0 1