| 基本逻辑门 | 符号 | 数学公式 | 真值表 | 
| 缓冲器 |  | Q = A | A Q 0 0
 1 1
 | 
| 非门 |  | Q = 非 A | A Q 0 1
 1 0
 | 
| 与门 |  | Q = A . B | A B Q 0 0 0
 0 1 0
 1 0 0
 1 1 1
 | 
| 与非门 |  | Q = 非 (A . B) | A B Q 0 0 1
 0 1 1
 1 0 1
 1 1 0
 | 
| 或门 |  | Q = A + B | A B Q 0 0 0
 0 1 1
 1 0 1
 1 1 1
 | 
| 或非门 |  | Q = 非 (A + B) | A B Q 0 0 1
 0 1 0
 1 0 0
 1 1 0
 | 
| 异或门 |  | Q = (A + B) . 非 (A . B) | A B Q 0 0 0
 0 1 1
 1 0 1
 1 1 0
 | 
| 异或非门 |  | Q = 非 ( (A + B) . 非 (A . B) ) | A B Q 0 0 1
 0 1 0
 1 0 0
 1 1 1
 |