8 dot Braille Alphabet
8 dot Braille Letters
8 dot Braille Numbers
8 dot Braille Punctuation
8 dot Braille Symbols

8 dot Braille Cell Unified 8 dot Braille Code 8 dot Braille Cell

      6-dot Braille Number Cell
     

6-dot Braille 0
0
8-dot Braille 0

      6-dot Braille Number Cell
     

6-dot Braille 1
1
8-dot Braille 1

      6-dot Braille Number Cell
     

6-dot Braille 2
2
8-dot Braille 2

      6-dot Braille Number Cell
     

6-dot Braille 3
3
8-dot Braille 3

      6-dot Braille Number Cell
     

6-dot Braille 4
4
8-dot Braille 4

6-dot Braille Alphabet
8-dot Braille Alphabet
6-dot Braille Letters
8-dot Braille Letters
6-dot Braille Numbers
8-dot Braille Numbers
6-dot Braille Punctuation
8-dot Braille Punctuation
8-dot Braille Symbols
      6-dot Braille Number Cell
     

6-dot Braille 5
5
8-dot Braille 5

      6-dot Braille Number Cell
     

6-dot Braille 6
6
8-dot Braille 6

      6-dot Braille Number Cell
     

6-dot Braille 7
7
8-dot Braille 7

      6-dot Braille Number Cell
     

6-dot Braille 8
8
8-dot Braille 8

      6-dot Braille Number Cell
     

6-dot Braille 9
9
8-dot Braille 9

6-dot Braille Alphabet
8-dot Braille Alphabet
6-dot Braille Letters
8-dot Braille Letters
6-dot Braille Numbers
8-dot Braille Numbers
6-dot Braille Punctuation
8-dot Braille Punctuation
8-dot Braille Symbols
     


+
8-dot Braille +

     


-
8-dot Braille -

     


×
8-dot Braille ×

     


÷
8-dot Braille ÷

     


=
8-dot Braille =

6-dot Braille Alphabet
8-dot Braille Alphabet
6-dot Braille Letters
8-dot Braille Letters
6-dot Braille Numbers
8-dot Braille Numbers
6-dot Braille Punctuation
8-dot Braille Punctuation
8-dot Braille Symbols

Braille was developed by Louis Braille in the beginning of the 19th century. 6 dot Braille letters, common punctuation marks, and a few symbols are displayed as raised 6 dot Braille cell patterns read by using a fingertip to feel the raised dots. The 6 dot Braille alphabet, the method for representing Braille numbers, and some Braille punctuation marks are used in all languages that share the Roman alphabet. There are variations of 6 dot Braille in various Roman alphabet languages. Representation of punctuation marks and differences in the meanings of other 6 dot Braille cells are commonly used to represent special characters and/or common letter combinations.

Braille characters are based on a 6 dot Braille cell having two parallel columns of three dots each. If the empty cell is counted, 64 unique dot combinations are possible with a 6 dot Braille cell. Dot height is approximately 0.02 inches (0.5 mm); the horizontal and vertical spacing between dot centers within a Braille cell is approximately 0.1 inches (2.5 mm); the blank space between dots on adjacent cells is approximately 0.15 inches (3.75 mm) horizontally and 0.2 inches (5.0 mm) vertically. A standard Braille page is 11 by 11 inches and typically has a maximum of 40 to 42 Braille cells per line and 25 lines.

6-dot Braille
Numbering
1 o o 4
2 o o 5
3 o o 6
   
Old 8-dot Braille
Numbering
1 o o 4
2 o o 5
3 o o 6
7 o o 8
   
Unified Braille Code
Numbering
4 o o 5
3 o o 6
2 o o 7
1 o o 8

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