| No | Part No | Description | Brand | |
|---|---|---|---|---|
| 3 | DM74LS10 | Triple 3-Input NAND Gate | Fairchild Semiconductor |
 |
| 2 | DM74LS11 | Triple 3-Input AND Gate | Fairchild Semiconductor |
|
| 1 | DM74LS12 | Dual Retriggerable One-Shot with Clear and Complementary Outputs | Fairchild Semiconductor |
|