Device Control One
Symbol Meaning
The Device Control One symbol was used mostly in computer terminals, printers, word processing systems, and telecommunication equipment in order to control functions belonging to various devices.
It is one of the four device control characters: DC1, DC2, DC3, DC4. They all provided the ability to transmit special instructions for controlling device functions and modes of operation. The assignment and interpretation of device control symbols depended on the specific device and communication protocol.
As for modern computer systems and applications, the U+0011 symbol is rarely used there, since other mechanisms and protocols are employed to control device settings and functions.
Like other control symbols, this one has no visible representation and doesn't occupy a lot of space on screen or in typed text. However, there is a separate symbol in Control Pictures2400–243F representing the graphical image of Device Control One as the abbreviation DC1 — ␑ .
The symbol “Device Control One” is included in the “C0 controls” subblock of the “Basic Latin” block and was approved as part of Unicode version 1.1 in 1993.
Synonyms
DC1.
| Unicode Name | Device Control One |
| Unicode Number | |
| HTML Code | |
| CSS Code | |
| Plane | 0: Basic Multilingual Plane |
| Unicode Block | Basic Latin |
| Unicode Subblock | C0 controls |
| Unicode Version | 1.1 (1993) |
| Keyboard shortcut | ^Q |
| Type of paired mirror bracket (bidi) | None |
| Composition Exclusion | No |
| Case change | 0011 |
| Simple case change | 0011 |
| scripts | Common |
| Encoding | hex | dec (bytes) | dec | binary |
|---|---|---|---|---|
| UTF-8 | 11 | 17 | 17 | 00010001 |
| UTF-16BE | 00 11 | 0 17 | 17 | 00000000 00010001 |
| UTF-16LE | 11 00 | 17 0 | 4352 | 00010001 00000000 |
| UTF-32BE | 00 00 00 11 | 0 0 0 17 | 17 | 00000000 00000000 00000000 00010001 |
| UTF-32LE | 11 00 00 00 | 17 0 0 0 | 285212672 | 00010001 00000000 00000000 00000000 |