U+23DA was added to Unicode in version 4.1 (2005). It belongs to the block Miscellaneous Technical in the Basic Multilingual Plane.
This character is a Other Symbol and is commonly used, that is, in no specific script.
The glyph is not a composition. It has a Neutral East Asian Width. In bidirectional context it acts as Other Neutral and is not mirrored. In text U+23DA behaves as Alphabetic regarding line breaks. It has type Other for sentence and Other for word breaks. The Grapheme Cluster Break is Any.
The Wikipedia has the following information about this codepoint:
In electrical engineering, ground or earth is the reference point in an electrical circuit from which voltages are measured, a common return path for electric current, or a direct physical connection to the Earth.
Electrical circuits may be connected to ground (earth) for several reasons. In mains powered equipment, exposed metal parts are connected to ground to prevent user contact with dangerous voltage if electrical insulation fails. Connections to ground limit the build-up of static electricity when handling flammable products or electrostatic-sensitive devices. In some telegraph and power transmission circuits, the earth itself can be used as one conductor of the circuit, saving the cost of installing a separate return conductor (see single-wire earth return).
For measurement purposes, the Earth serves as a (reasonably) constant potential reference against which other potentials can be measured. An electrical ground system should have an appropriate current-carrying capability to serve as an adequate zero-voltage reference level. In electronic circuit theory, a "ground" is usually idealized as an infinite source or sink for charge, which can absorb an unlimited amount of current without changing its potential. Where a real ground connection has a significant resistance, the approximation of zero potential is no longer valid. Stray voltages or earth potential rise effects will occur, which may create noise in signals or if large enough will produce an electric shock hazard.
The use of the term ground (or earth) is so common in electrical and electronics applications that circuits in portable electronic devices such as cell phones and media players as well as circuits in vehicles may be spoken of as having a "ground" connection without any actual connection to the Earth, despite "common" being a more appropriate term for such a connection. This is usually a large conductor attached to one side of the power supply (such as the "ground plane" on a printed circuit board) which serves as the common return path for current from many different components in the circuit.
System | Representation |
---|---|
Nº | 9178 |
UTF-8 | E2 8F 9A |
UTF-16 | 23 DA |
UTF-32 | 00 00 23 DA |
URL-Quoted | %E2%8F%9A |
HTML-Escape | ⏚ |
Wrong windows-1252 Mojibake | â |
Property | Value |
---|---|
Age (age) | 4.1 |
Unicode Name (na) | EARTH GROUND |
Unicode 1 Name (na1) | — |
Block (blk) | Misc_Technical |
General Category (gc) | Other Symbol |
Script (sc) | Common |
Bidirectional Category (bc) | Other Neutral |
Combining Class (ccc) | Not Reordered |
Decomposition Type (dt) | None |
Decomposition Mapping (dm) |
|
Lowercase (Lower) | ✘ |
Simple Lowercase Mapping (slc) |
|
Lowercase Mapping (lc) |
|
Uppercase (Upper) | ✘ |
Simple Uppercase Mapping (suc) |
|
Uppercase Mapping (uc) |
|
Simple Titlecase Mapping (stc) |
|
Titlecase Mapping (tc) |
|
Case Folding (cf) |
|
ASCII Hex Digit (AHex) | ✘ |
Alphabetic (Alpha) | ✘ |
Bidi Control (Bidi_C) | ✘ |
Bidi Mirrored (Bidi_M) | ✘ |
Bidi Paired Bracket (bpb) |
|
Bidi Paired Bracket Type (bpt) | None |
Cased (Cased) | ✘ |
Composition Exclusion (CE) | ✘ |
Case Ignorable (CI) | ✘ |
Full Composition Exclusion (Comp_Ex) | ✘ |
Changes When Casefolded (CWCF) | ✘ |
Changes When Casemapped (CWCM) | ✘ |
Changes When NFKC Casefolded (CWKCF) | ✘ |
Changes When Lowercased (CWL) | ✘ |
Changes When Titlecased (CWT) | ✘ |
Changes When Uppercased (CWU) | ✘ |
Dash (Dash) | ✘ |
Deprecated (Dep) | ✘ |
Default Ignorable Code Point (DI) | ✘ |
Diacritic (Dia) | ✘ |
East Asian Width (ea) | Neutral |
Extender (Ext) | ✘ |
FC NFKC Closure (FC_NFKC) |
|
Grapheme Cluster Break (GCB) | Any |
Grapheme Base (Gr_Base) | ✔ |
Grapheme Extend (Gr_Ext) | ✘ |
Grapheme Link (Gr_Link) | ✘ |
Hex Digit (Hex) | ✘ |
Hangul Syllable Type (hst) | Not Applicable |
Hyphen (Hyphen) | ✘ |
ID Continue (IDC) | ✘ |
Ideographic (Ideo) | ✘ |
ID Start (IDS) | ✘ |
IDS Binary Operator (IDSB) | ✘ |
IDS Trinary Operator and (IDST) | ✘ |
InMC (InMC) | — |
Indic Positional Category (InPC) | NA |
Indic Syllabic Category (InSC) | Other |
ISO 10646 Comment (isc) | — |
Joining Group (jg) | No_Joining_Group |
Join Control (Join_C) | ✘ |
Jamo Short Name (JSN) | — |
Joining Type (jt) | Non Joining |
Line Break (lb) | Alphabetic |
Logical Order Exception (LOE) | ✘ |
Math (Math) | ✘ |
Noncharacter Code Point (NChar) | ✘ |
NFC Quick Check (NFC_QC) | Yes |
NFD Quick Check (NFD_QC) | Yes |
NFKC Casefold (NFKC_CF) |
|
NFKC Quick Check (NFKC_QC) | Yes |
NFKD Quick Check (NFKD_QC) | Yes |
Numeric Type (nt) | None |
Numeric Value (nv) | NaN |
Other Alphabetic (OAlpha) | ✘ |
Other Default Ignorable Code Point (ODI) | ✘ |
Other Grapheme Extend (OGr_Ext) | ✘ |
Other ID Continue (OIDC) | ✘ |
Other ID Start (OIDS) | ✘ |
Other Lowercase (OLower) | ✘ |
Other Math (OMath) | ✘ |
Other Uppercase (OUpper) | ✘ |
Pattern Syntax (Pat_Syn) | ✔ |
Pattern White Space (Pat_WS) | ✘ |
Quotation Mark (QMark) | ✘ |
Radical (Radical) | ✘ |
Sentence Break (SB) | Other |
Simple Case Folding (scf) |
|
Script Extension (scx) | Common |
Soft Dotted (SD) | ✘ |
STerm (STerm) | ✘ |
Terminal Punctuation (Term) | ✘ |
Unified Ideograph (UIdeo) | ✘ |
Variation Selector (VS) | ✘ |
Word Break (WB) | Other |
White Space (WSpace) | ✘ |
XID Continue (XIDC) | ✘ |
XID Start (XIDS) | ✘ |
Expands On NFC (XO_NFC) | ✘ |
Expands On NFD (XO_NFD) | ✘ |
Expands On NFKC (XO_NFKC) | ✘ |
Expands On NFKD (XO_NFKD) | ✘ |