Step 1: Determine the UTF-8 encoding bit layout
The character ⊡ has the Unicode code point U+22A1. 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+22A1 to binary:
00100010 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 10001010 10100001
SQUARED DOT OPERATOR·U+22A1
⊡
Character Information
Code Point
U+22A1
HEX
22A1
Unicode Plane
Basic Multilingual Plane
Category
Math Symbol
Character Representations
Click elements to copy| Encoding | Hex | Binary |
|---|---|---|
| UTF8 | E2 8A A1 | 11100010 10001010 10100001 |
| UTF16 (big Endian) | 22 A1 | 00100010 10100001 |
| UTF16 (little Endian) | A1 22 | 10100001 00100010 |
| UTF32 (big Endian) | 00 00 22 A1 | 00000000 00000000 00100010 10100001 |
| UTF32 (little Endian) | A1 22 00 00 | 10100001 00100010 00000000 00000000 |
HTML Entity
⊡
URI Encoded
%E2%8A%A1
Description
The Unicode character U+22A1, known as the SQUARED DOT OPERATOR, plays a significant role in digital text by representing a mathematical symbol used primarily in algebra and calculus. This operator is commonly utilized to represent the differentiation of a function in calculus, indicating the rate of change of a quantity when the input changes by an infinitesimally small amount. Its typographic design features a small dot enclosed within a square, which visually distinguishes it from other symbols in mathematical notation. The SQUARED DOT OPERATOR holds no specific cultural or linguistic significance but is essential in various technical contexts, including engineering, physics, and computer science, where precise mathematical expressions are required for accurate communication of concepts and calculations.
How to type the ⊡ symbol on Windows
Hold Alt and type 8865 on the numpad. Or use Character Map.