Step 1: Determine the UTF-8 encoding bit layout
The character ↧ has the Unicode code point U+21A7. 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+21A7 to binary:
00100001 10100111. 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 10100111
DOWNWARDS ARROW FROM BAR·U+21A7
↧
Character Information
Code Point
U+21A7
HEX
21A7
Unicode Plane
Basic Multilingual Plane
Category
Other Symbol
Character Representations
Click elements to copy| Encoding | Hex | Binary |
|---|---|---|
| UTF8 | E2 86 A7 | 11100010 10000110 10100111 |
| UTF16 (big Endian) | 21 A7 | 00100001 10100111 |
| UTF16 (little Endian) | A7 21 | 10100111 00100001 |
| UTF32 (big Endian) | 00 00 21 A7 | 00000000 00000000 00100001 10100111 |
| UTF32 (little Endian) | A7 21 00 00 | 10100111 00100001 00000000 00000000 |
HTML Entity
↧
URI Encoded
%E2%86%A7
Description
The Unicode character U+21A7, known as the Downwards Arrow from Bar, plays a significant role in digital text representation. This typographical symbol is commonly employed in mathematical expressions to denote the derivative of a function or in equations involving limits. It represents a downward pointing arrow that serves as a visual aid to indicate a change in direction or a decrease in value. The Downwards Arrow from Bar is widely used across various programming languages, software applications, and digital platforms to accurately represent and convey complex mathematical concepts. Although it may not have a direct linguistic function, its use in technical contexts, such as computer science, engineering, and physics, demonstrates the character's importance in facilitating clear communication of ideas within these fields.
How to type the ↧ symbol on Windows
Hold Alt and type 8615 on the numpad. Or use Character Map.