Step 1: Determine the UTF-8 encoding bit layout
The character ⇓ has the Unicode code point U+21D3. 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+21D3 to binary:
00100001 11010011. 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 10000111 10010011
DOWNWARDS DOUBLE ARROW·U+21D3
⇓
Character Information
Code Point
U+21D3
HEX
21D3
Unicode Plane
Basic Multilingual Plane
Category
Other Symbol
Character Representations
Click elements to copy| Encoding | Hex | Binary |
|---|---|---|
| UTF8 | E2 87 93 | 11100010 10000111 10010011 |
| UTF16 (big Endian) | 21 D3 | 00100001 11010011 |
| UTF16 (little Endian) | D3 21 | 11010011 00100001 |
| UTF32 (big Endian) | 00 00 21 D3 | 00000000 00000000 00100001 11010011 |
| UTF32 (little Endian) | D3 21 00 00 | 11010011 00100001 00000000 00000000 |
HTML Entity
⇓
URI Encoded
%E2%87%93
Description
The Unicode character U+21D3, known as the DOWNWARDS DOUBLE ARROW, is a versatile symbol with diverse applications in digital text. It is commonly employed in mathematical equations and logical expressions to signify reversible processes or directions. For example, it can represent the 'implication' or 'entailment' relationship between two statements in logic. In computer programming, this character is often used as an operator for reverse function calls or pointers. The DOWNWARDS DOUBLE ARROW has no specific cultural, linguistic, or technical context, making it a universal symbol that transcends geographic and language barriers. Its primary role lies in its utility within digital text, facilitating accurate and concise communication of mathematical and logical concepts.
How to type the ⇓ symbol on Windows
Hold Alt and type 8659 on the numpad. Or use Character Map.