| NUL | null | NL | new line (or LF, line feed) | DC4 | device control 4 |
| SOH | start of heading | VT | vertical tab | NAK | negative acknowledge |
| STX | start of text | NP | new page (or FF, form feed) | SYN | synchronous idle |
| ETX | end of text | CR | carriage return | ETB | end of transmission block |
| EOT | end of transmission | SO | shift out | CAN | cancel |
| ENQ | enquiry | SI | shift in | EM | end of medium |
| ACK | acknowledge | DLE | data link escape | SUB | substitute |
| BEL | bell | DC1 | device control 1 | ESC | escape |
| BS | backspace | DC2 | device control 2 | FS | file separator |
| TAB | horizontal tab | DC3 | device control 3 | GS | group separator |
| RS | record separator | US | unit separator | SP | space |