亦稱禁止閘,實現及反邏輯的電路,例如F=A AND NOT B的真值表如下:
A | B | NOT B= | F=A AND NOT B=A• |
0 | 0 | 1 | 0 |
0 | 1 | 0 | 0 |
1 | 0 | 1 | 1 |
1 | 1 | 0 | 0 |
亦稱禁止閘,實現及反邏輯的電路,例如F=A AND NOT B的真值表如下:
A | B | NOT B= | F=A AND NOT B=A• |
0 | 0 | 1 | 0 |
0 | 1 | 0 | 0 |
1 | 0 | 1 | 1 |
1 | 1 | 0 | 0 |