|
X |
Y |
B |
D |
|
|
0 |
0 |
0 |
0 |
|
|
0 |
1 |
1 |
1 |
|
|
1 |
0 |
0 |
1 |
|
|
1 |
1 |
0 |
0 |
半減算器(最下位の計算)
B = X Y
D = X ⊕ Y