ASCII 21 = NAK
Negative Acknowledge
NAK
Negative Acknowledge
ASCII 21 in All Bases
Decimal
21
Binary
00010101
Octal
25
Hexadecimal
15
Try the Number Base Converter
Conversions
Binary (2)
0b10101
Octal (8)
0o25
Decimal (10)
21
Hexadecimal (16)
0x15
Binary Bits
0
0
0
1
0
1
0
1
| Decimal | Binary | Octal | Hex |
|---|---|---|---|
| 0 | 0 | 0 | 0 |
| 1 | 1 | 1 | 1 |
| 8 | 1000 | 10 | 8 |
| 10 | 1010 | 12 | A |
| 16 | 10000 | 20 | 10 |
| 32 | 100000 | 40 | 20 |
| 64 | 1000000 | 100 | 40 |
| 127 | 1111111 | 177 | 7F |
| 128 | 10000000 | 200 | 80 |
| 255 | 11111111 | 377 | FF |
Nearby ASCII Characters
| Code | Char | Hex | Description |
|---|---|---|---|
| 16 | DLE | 10 | Data Link Escape |
| 17 | DC1 | 11 | Device Control 1 (XON) |
| 18 | DC2 | 12 | Device Control 2 |
| 19 | DC3 | 13 | Device Control 3 (XOFF) |
| 20 | DC4 | 14 | Device Control 4 |
| 22 | SYN | 16 | Synchronous Idle |
| 23 | ETB | 17 | End of Transmission Block |
| 24 | CAN | 18 | Cancel |
| 25 | EM | 19 | End of Medium |
| 26 | SUB | 1A | Substitute |