Semisumador
| A | B | S | Carry |
| 0 | 0 | 0 | 0 |
| 0 | 1 | 1 | 0 |
| 1 | 0 | 1 | 0 |
| 1 | 1 | 0 | 1 |
https://www.youtube.com/watch?v=PtVo394hM0Y&feature=youtu.be
| A | B | S | Carry |
| 0 | 0 | 0 | 0 |
| 0 | 1 | 1 | 0 |
| 1 | 0 | 1 | 0 |
| 1 | 1 | 0 | 1 |
https://www.youtube.com/watch?v=PtVo394hM0Y&feature=youtu.be