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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 ...
HTML and XML provide ways to reference Unicode characters when the characters themselves either cannot or should not be used. A numeric character reference refers to a character by its Universal Character Set/Unicode code point, and a character entity reference refers to a character by a predefined name.
The Braille pattern dots-0 ( ⠀), also called a blank Braille pattern, is a 6-dot or 8-dot braille cell with no dots raised. It is represented by the Unicode code point U+2800, and in Braille ASCII with a space.
The Braille pattern dots-6 ( ⠠) is a 6-dot braille cell with the bottom right dot raised, or an 8-dot braille cell with the lower-middle right dot raised. It is represented by the Unicode code point U+2820, and in Braille ASCII with a comma:, .
The 8-dot code is designed that its 6-dot subset is identical to the 6-dot code. The remainder are assigned by the following rules: adding dot 7 subtracts 32 from the ASCII value; adding dot 8 adds 128 to the ASCII value; The dot-5 (⠐) character is used as a universal modifier [clarification needed].
In logic, a set of symbols is commonly used to express logical representation. The following table lists many common symbols, together with their name, how they should be read out loud, and the related field of mathematics.
The Braille pattern dots-1 ( ⠁) is a 6-dot or 8-dot braille cell with the top left dot raised. It is represented by the Unicode code point U+2801, and in Braille ASCII with "A". Character information
Some recent embedded systems also use proprietary character sets, usually extensions to ISO 8859 character sets, which include box-drawing characters or other special symbols. Other types of box-drawing characters are block elements , shade characters, and terminal graphic characters; these can be used for filling regions of the screen and ...