ASCII code for device control 3 (xoff)
19
Device Control 3 (XOFF) — a control character, not printable
| Decimal | 19 |
| Hexadecimal | 0x13 |
| Octal | 0023 |
| Binary | 00010011 |
| HTML entity |  |
What it is
Also called XOFF. Pauses transmission so a slow device can catch up. Ctrl+S sends it, which is the usual explanation for a terminal that suddenly stops responding to keystrokes.
The full entry
ASCII 19 in full — the code point page, with what sits either side of it and how the character is encoded elsewhere.
Frequently asked questions
What is the ASCII code for device control 3 (xoff)?
The ASCII code for device control 3 (xoff) is 19 in decimal, 0x13 in hexadecimal and 0023 in octal.
What is device control 3 (xoff) in binary?
00010011 — eight bits, though ASCII only defines seven, so the top bit is always zero.
Is device control 3 (xoff) a printable character?
No. Device Control 3 (XOFF) is a control character — an instruction to a teleprinter rather than a mark on paper, which is why most tables show an empty cell for it.
Other characters
- ASCII code for device control 4 — 20
- ASCII code for negative acknowledge — 21
- ASCII code for synchronous idle — 22
- ASCII code for end of transmission block — 23
- ASCII code for cancel — 24
- ASCII code for end of medium — 25
- ASCII code for substitute — 26
- ASCII code for escape — 27
- ASCII code for file separator — 28
- ASCII code for group separator — 29
- ASCII code for record separator — 30
- ASCII code for unit separator — 31
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