This character is a Other Symbol and is mainly used in the Braille script.
The glyph is not a composition. It has no designated width in East Asian texts. In bidirectional text it is written from left to right. When changing direction it is not mirrored. The word that U+2890 forms with similar adjacent characters prevents a line break inside it.
The Wikipedia has the following information about this codepoint:
The Braille pattern dots-5 ( ⠐ ) is a 6-dot braille cell with the middle right dot raised, or an 8-dot braille cell with the upper-middle right dot raised. It is represented by the Unicode code point U+2810, and in Braille ASCII with a quote mark: ".
Representations
System
Representation (click value to copy)
Nº
10384
UTF-8
E2 A2 90
UTF-16
28 90
UTF-32
00 00 28 90
URL-Quoted
%E2%A2%90
HTML hex reference
⢐
Wrong windows-1252 Mojibake
â¢
Encoding: GB18030 (hex bytes)
81 37 E3 38
RFC 5137
\u'2890'
Bash and Zsh inside echo -e
\u2890
C and C++
\u2890
C#
\u2890
CSS
\002890
Excel
=UNICHAR(10384)
Go
\u2890
JavaScript
\u2890
Modern JavaScript since ES6
\u{2890}
JSON
\u2890
Java
\u2890
Lua
\u{2890}
Matlab
char(10384)
Perl
"\x{2890}"
PHP
\u{2890}
PostgreSQL
U&'\2890'
PowerShell
`u{2890}
Python
\u2890
Ruby
\u{2890}
Rust
\u{2890}
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