(n.) A numbering system with numbers 0 through 9 and letters A through F, which together are called hex digits.
| Hexadecimal | Decimal | Binary |
| 01 | 1 | 00000001 |
| 02 | 2 | 00000010 |
| 03 | 3 | 00000011 |
| 04 | 4 | 00000100 |
| 05 | 5 | 00000101 |
| 06 | 6 | 00000110 |
| 07 | 7 | 00000111 |
| 08 | 8 | 00001000 |
| 09 | 9 | 00001001 |
| 0A | 10 | 00001010 |
| 0B | 11 | 00001011 |
| 0C | 12 | 00001100 |
| 0D | 13 | 00001101 |
| 0E | 14 | 00001110 |
| 0F | 15 | 00001111 |
| 10 | 16 | 00010000 |
| 11 | 17 | 00010001 |
| 12 | 18 | 00010010 |
| 13 | 19 | 00010011 |
| 14 | 20 | 00010100 |
| 15 | 21 | 00010101 |
| 16 | 22 | 00010110 |
| 17 | 23 | 00010111 |
| 18 | 24 | 00011000 |
| 19 | 25 | 00011001 |
| 1A | 26 | 00011010 |
| 1B | 27 | 00011011 |
| 1C | 28 | 00011100 |
| 1D | 29 | 00011101 |
| 1E | 30 | 00011110 |
| 1F | 31 | 00011111 |
| 20 | 32 | 00100000 |
| 21 | 33 | 00100001 |
| 22 | 34 | 00100010 |
| 23 | 35 | 00100011 |
| 24 | 36 | 00100100 |
| 25 | 37 | 00100101 |
| 26 | 38 | 00100110 |
| 27 | 39 | 00100111 |
| 28 | 40 | 00101000 |