Step 1: Determine the UTF-8 encoding bit layout
The character ↡ has the Unicode code point U+21A1. In UTF-8, it is encoded using 3 bytes because its codepoint is in the range of
0x0800to0xffff.
Therefore we know that the UTF-8 encoding will be done over 16 bits within the final 24 bits and that it will have the format:1110xxxx 10xxxxxx 10xxxxxx
Where thexare the payload bits.UTF-8 Encoding bit layout by codepoint range Codepoint Range Bytes Bit pattern Payload length U+0000 - U+007F 1 0xxxxxxx 7 bits U+0080 - U+07FF 2 110xxxxx 10xxxxxx 11 bits U+0800 - U+FFFF 3 1110xxxx 10xxxxxx 10xxxxxx 16 bits U+10000 - U+10FFFF 4 11110xxx 10xxxxxx 10xxxxxx 10xxxxxx 21 bits Step 2: Obtain the payload bits:
Convert the hexadecimal code point U+21A1 to binary:
00100001 10100001. Those are the payload bits.Step 3: Fill in the bits to match the bit pattern:
Obtain the final bytes by arranging the paylod bits to match the bit layout:
11100010 10000110 10100001
DOWNWARDS TWO HEADED ARROW·U+21A1
↡
Character Information
Code Point
U+21A1
HEX
21A1
Unicode Plane
Basic Multilingual Plane
Category
Other Symbol
Character Representations
Click elements to copy| Encoding | Hex | Binary |
|---|---|---|
| UTF8 | E2 86 A1 | 11100010 10000110 10100001 |
| UTF16 (big Endian) | 21 A1 | 00100001 10100001 |
| UTF16 (little Endian) | A1 21 | 10100001 00100001 |
| UTF32 (big Endian) | 00 00 21 A1 | 00000000 00000000 00100001 10100001 |
| UTF32 (little Endian) | A1 21 00 00 | 10100001 00100001 00000000 00000000 |
HTML Entity
↡
URI Encoded
%E2%86%A1
Description
The Unicode character U+21A1, known as the "DOWNWARDS TWO HEADED ARROW", is a typographical symbol often used in mathematical equations and scientific notation. It is part of the Miscellaneous Technical (Z) block of Unicode, which contains symbols that are primarily used for technical purposes. The primary role of this character is to represent a bidirectional function or process that moves downwards, such as in physics, engineering, and computer science. It can be used in conjunction with other mathematical symbols to provide a more comprehensive representation of complex processes. While it may not have specific cultural or linguistic significance, its importance lies in the clarity and accuracy it brings to technical documents and equations. The DOWNWARDS TWO HEADED ARROW is an essential tool for effectively conveying the flow of information or processes in various fields where directional arrows are needed.
How to type the ↡ symbol on Windows
Hold Alt and type 8609 on the numpad. Or use Character Map.