Character Information

Code Point
U+22A4
HEX
22A4
Unicode Plane
Basic Multilingual Plane
Category
Math Symbol

Character Representations

Click elements to copy
EncodingHexBinary
UTF8
E2 8A A4
11100010 10001010 10100100
UTF16 (big Endian)
22 A4
00100010 10100100
UTF16 (little Endian)
A4 22
10100100 00100010
UTF32 (big Endian)
00 00 22 A4
00000000 00000000 00100010 10100100
UTF32 (little Endian)
A4 22 00 00
10100100 00100010 00000000 00000000
HTML Entity
⊤
URI Encoded
%E2%8A%A4

Description

The Unicode character U+22A4, also known as the Down Tack (⇓), is a typographical symbol that primarily serves in mathematical expressions and digital text for representing a downward direction or vector. It is commonly utilized in vector algebra to signify the downward orientation of a vector or point in two-dimensional or three-dimensional spaces. The Down Tack has no cultural, linguistic, or context-specific usage and is purely a technical symbol. Although it may seem obscure or niche, it plays an essential role in fields such as computer graphics, video game development, physics simulations, and computer-aided design (CAD).

How to type the symbol on Windows

Hold Alt and type 8868 on the numpad. Or use Character Map.

  1. Step 1: Determine the UTF-8 encoding bit layout

    The character has the Unicode code point U+22A4. In UTF-8, it is encoded using 3 bytes because its codepoint is in the range of 0x0800 to 0xffff.

    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 the x are the payload bits.

    UTF-8 Encoding bit layout by codepoint range
    Codepoint RangeBytesBit patternPayload length
    U+0000 - U+007F10xxxxxxx7 bits
    U+0080 - U+07FF2110xxxxx 10xxxxxx11 bits
    U+0800 - U+FFFF31110xxxx 10xxxxxx 10xxxxxx16 bits
    U+10000 - U+10FFFF411110xxx 10xxxxxx 10xxxxxx 10xxxxxx21 bits
  2. Step 2: Obtain the payload bits:

    Convert the hexadecimal code point U+22A4 to binary: 00100010 10100100. Those are the payload bits.

  3. 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 10100100