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Braille ASCII (or more formally The North American Braille ASCII Code, also known as SimBraille) is a subset of the ASCII character set which uses 64 of the printable ASCII characters to represent all possible dot combinations in six-dot braille. It was developed around 1969 and, despite originally being known as North American Braille ASCII ...
The braille package for LaTeX (and several printed publications such as the printed manual for the new international braille music code) show unpunched dots as very small dots (much smaller than the filled-in dots) rather than circles, and this tends to print better.
The number sign is repeated after a slash that is not used as a fraction bar (like model number 15/07). [24] For example, 1 ⁄ 20 (one twentieth) is ⠼ ⠁ ⠌ ⠃ ⠚ , but 20/20 [vision] is ⠼ ⠃ ⠚ ⠌ ⠼ ⠃ ⠚ . The braille number sign has no equivalent in print. It is sometimes transcribed as # .
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Unified English Braille is designed to be readily understood by people familiar with the literary braille (used in standard prose writing), while also including support for specialized math and science symbols, computer-related symbols (the @ sign [1] as well as more specialised programming-language syntax), foreign alphabets, and visual ...
8-dot Braille cell dot numbers. Dots 7 and 8 are not found on a 6-dot Braille cell. Four options can be used in this Braille cell template to produce a cell, and all are case-insensitive (A=a). {{braille cell|1234|1423|⠏|U+280F|u+280f}} → ⠏ ⠏ ⠏ ⠏ ⠏ Note that this cell definition is unrelated to any language (no "A" assigned).
An early braille chart, displaying the numeric order of the characters. Braille arranged his characters in decades (groups of ten), and assigned the 25 letters of the French alphabet to them in order. The characters beyond the first 25 are the principal source of variation today.
Braille assignments have also been created for mathematical and musical notation. However, because the six-dot braille cell allows only 64 (2 6) patterns, including space, the characters of a braille script commonly have multiple values, depending on their context. That is, character mapping between print and braille is not one-to-one.