Step 1: Determine the UTF-8 encoding bit layout
The character Α has the Unicode code point U+0391. In UTF-8, it is encoded using 2 bytes because its codepoint is in the range of
0x0080to0x07ff.
Therefore we know that the UTF-8 encoding will be done over 11 bits within the final 16 bits and that it will have the format:110xxxxx 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+0391 to binary:
00000011 10010001. 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:
11001110 10010001
GREEK CAPITAL LETTER ALPHA·U+0391
Α
Character Information
Code Point
U+0391
HEX
0391
Unicode Plane
Basic Multilingual Plane
Category
Uppercase Letter
Character Representations
Click elements to copy| Encoding | Hex | Binary |
|---|---|---|
| UTF8 | CE 91 | 11001110 10010001 |
| UTF16 (big Endian) | 03 91 | 00000011 10010001 |
| UTF16 (little Endian) | 91 03 | 10010001 00000011 |
| UTF32 (big Endian) | 00 00 03 91 | 00000000 00000000 00000011 10010001 |
| UTF32 (little Endian) | 91 03 00 00 | 10010001 00000011 00000000 00000000 |
HTML Entity
Α
URI Encoded
%CE%91
Description
The Unicode character U+0391 represents the Greek Capital Letter Alpha (Α α), which is the first letter of the Greek alphabet. It has a significant role in digital text as it serves as a foundation for various mathematical, scientific, and technical notations. This character is widely used in computer systems, programming languages, and software applications that deal with Greek text or mathematical symbols. Its cultural importance stems from its historical usage in ancient Greece, where the alpha was the starting point for all Greek letters and played a pivotal role in various fields such as philosophy, religion, literature, and science. The Alpha is also used to denote the beginning of a count in numbering systems, making it essential in coding and programming contexts.
How to type the Α symbol on Windows
Hold Alt and type 0913 on the numpad. Or use Character Map.