A.1
B.2
C.3
D.4
| AB CD |
00 |
01 |
11 |
10 |
|
00 |
|
1 |
1 |
|
|
01 |
1 |
|
|
1 |
|
11 |
|
|
|
|
|
10 |
|
1 |
|
|
| AB CD |
00 |
01 |
11 |
10 |
|
00 |
|
1 |
1 |
|
|
01 |
1 |
|
|
1 |
|
11 |
× |
|
|
× |
|
10 |
|
1 |
× |
|
A.裁判功能,且A为主裁
B.三变量表决功能
C.当
时,B或C为1,输出为1
D.C为1时,A或B为1,输出为1