ASCII code for enquiry
5
Enquiry — a control character, not printable
| Decimal | 5 |
| Hexadecimal | 0x05 |
| Octal | 0005 |
| Binary | 00000101 |
| HTML entity |  |
What it is
Asked the receiving station to identify itself. Obsolete outside legacy serial links.
The full entry
ASCII 5 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 enquiry?
The ASCII code for enquiry is 5 in decimal, 0x05 in hexadecimal and 0005 in octal.
What is enquiry in binary?
00000101 — eight bits, though ASCII only defines seven, so the top bit is always zero.
Is enquiry a printable character?
No. Enquiry 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 acknowledge — 6
- ASCII code for bell — 7
- ASCII code for backspace — 8
- ASCII code for tab — 9
- ASCII code for newline — 10
- ASCII code for vertical tab — 11
- ASCII code for form feed — 12
- ASCII code for carriage return — 13
- ASCII code for shift out — 14
- ASCII code for shift in — 15
- ASCII code for data link escape — 16
- ASCII code for device control 1 (xon) — 17
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