U+2411 "␑" Symbol for Device Control One Unicode Character

U+2411 "␑" Symbol for Device Control One is a graphical representation of a control character originally defined in the ASCII standard as Device Control One (DC1, code point decimal 17), which was historically used in telecommunications and serial communication protocols to turn on or activate a peripheral device, such as a printer or terminal. When displayed as this symbolic glyph, "␑" is part of the Unicode Control Pictures block, designed to visually depict non‑printable control codes in contexts like debugging, documentation, or plain text visualization. Its shape, featuring the letters "DC" in a small box with the numeral "1", helps users and systems identify the specific control function without requiring the actual invisible control character to be rendered.

General Properties

Code Point	U+2411
Version Added	1.1
Name	Symbol for Device Control One
Unicode 1.0 Name	Graphic for Device Control One
Block	Control Pictures
General Category	Other Symbol
Canonical Combining Class	Not Reordered
Bidirectional Class	Other Neutral

Encodings

HTML Decimal Encoding	␑
HTML Hex Encoding	␑
UTF-8 Encoding	0xE2 0x90 0x91
UTF-16 Encoding	0x2411
UTF-32 Encoding	0x00002411
C/C++/Java Escape	\u2411

Unicode Properties

NFC Quick Check	Yes
NFD Quick Check	Yes
NFKC Quick Check	Yes
NFKD Quick Check	Yes
Numeric Type	None
Numeric Value	NaN
Line Break	Alphabetic
Script	Common
Script Extensions	Common
Indic Syllabic Category	Other
Pattern Syntax	Yes
Vertical Orientation	Upright
Grapheme Base	Yes
Grapheme Cluster Break	Other
Word Break	Other
Sentence Break	Other