| $0+0$ | $=$ | $0$ |
| $0+1$ | $=$ | $1$ |
| $1+0$ | $=$ | $1$ |
| $1+1$ | $=$ | $0$ ou $10$ en fonction de la situation |
| $n$ | $2^n$ |
| $0$ | |
| $1$ | |
| $2$ | |
| $3$ | |
| $4$ | |
| $5$ | |
| $6$ | |
| $7$ | |
| $8$ | |
| $9$ | |
| $10$ | |
| $11$ | |
| $12$ | |
| $13$ | |
| $14$ | |
| $15$ | |
| $16$ |
| Écriture binaire | Écriture décimale |
| 0 | 0 |
| 1 | 1 |
| 10 | 2 |
| 11 | 3 |
| 100 | 4 |
| 101 | 5 |
| 110 | 6 |
| 111 | 7 |
| 1000 | 8 |
| 1001 | 9 |
| 1010 | 10 |
| 1110 | 14 |
| 1111 | 15 |
| 10000 | |
| 10001 | |
| 10110 | |
| 11011 | |
| 10111 | |
| 11111 | |
| 100101 | |
| 101110 | |
| 101101 | |
| 111111 | |
| 101010 | |
| 1001011 | |
| 11001101 | |
| 11 | |
| 13 | |
| 26 | |
| 18 | |
| 36 | |
| 153 | |
| 268 | |
| 1214 | |
| 7569 |