ASCII Code 21
This table contains detailed information for ASCII code #21. For this entry, you’ll find:
| Name: | NAK - Negative Acknowledgement | The conventional name for control characters |
| Decimal: | 21 | The base‑10 number |
| Octal: | 025 | The base‑8 representation (three digits) |
| Hexadecimal: | 15 | The base‑16 representation (two digits, uppercase) |
| Binary: | 00010101 | The 8‑bit binary representation |