Step 1: Determine the UTF-8 encoding bit layout
The character ← has the Unicode code point U+2190. 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+2190 to binary:
00100001 10010000. 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 10010000
LEFTWARDS ARROW·U+2190
←
Character Information
Code Point
U+2190
HEX
2190
Unicode Plane
Basic Multilingual Plane
Category
Math Symbol
Character Representations
Click elements to copy| Encoding | Hex | Binary |
|---|---|---|
| UTF8 | E2 86 90 | 11100010 10000110 10010000 |
| UTF16 (big Endian) | 21 90 | 00100001 10010000 |
| UTF16 (little Endian) | 90 21 | 10010000 00100001 |
| UTF32 (big Endian) | 00 00 21 90 | 00000000 00000000 00100001 10010000 |
| UTF32 (little Endian) | 90 21 00 00 | 10010000 00100001 00000000 00000000 |
HTML Entity
←
URI Encoded
%E2%86%90
Description
The Unicode character U+2190, also known as the "LEFTWARDS ARROW", is a typographic symbol used primarily in mathematical and scientific contexts to indicate direction or movement. It is often employed in mathematical equations, diagrams, and digital text to illustrate the concept of subtraction or deduction. This symbol is particularly useful in representing the leftward shift operation in programming languages and computer science, where it helps demonstrate the process of moving data elements or arrays to the left within memory storage. Although U+2190 doesn't have any significant cultural or linguistic context, its use in technical documents, algorithms, and computer code highlights its importance in various fields like mathematics, physics, engineering, and information technology.
How to type the ← symbol on Windows
Hold Alt and type 8592 on the numpad. Or use Character Map.