- Braille ASCII
Braille ASCII (or more formally The North American Braille ASCII Code) is a subset of the
ASCII character setwhich uses 64 of the printableASCII characters to represent all possible dot combinations in six-dot Braille. It was developed around 1969and, in spite of originally being known as North American Braille ASCII, it is now used internationally.
Braille ASCII uses the 64 ASCII characters between 32 and 95 inclusive. All capital letters in ASCII correspond to their equivalent values in Braille. Note however that, unlike standard print, there is only one Braille symbol for each letter of the alphabet. Therefore, in Braille, all letters are
lower-caseby default, unless preceded by a capitalization sign (dot 6).
The numbers 1 through 0 correspond to the letters a through j, except that they are lowered or dropped lower in the Braille cell. For example, C represents dots 1-4, and 3 is dots 2-5. The other symbols may or may not correspond to their Braille values. For example, / represents dots 3-4 in Braille ASCII, and this is the Braille slash, but = represents dots 1-2-3-4-5-6, and this is not the equal sign in Braille.
Braille ASCII more closely corresponds to the
Nemeth BrailleCode for mathematics than it does to the English Literary Braille Code, as the Nemeth Braille code is what it was originally based upon.
If Braille ASCII is viewed in a
word processor, it will look like a jumbled mix of letters, numbers, and punctuation. However, there are several fonts available, many of them free, which allow the user to view and print Braille ASCII as simulated Braille, i.e. a graphical representation of Braille characters
Braille ASCII was originally designed to be a means for storing and transmitting six-dot Braille in a digital format, and this continues to be its primary usage today. Because it uses standard characters available on
computer keyboards, it can be easily typed and edited with a standard word processor. Many Braille embossers receive their input in Braille ASCII, and nearly all Braille translation software can import and export this format.
Several institutions which produce Braille materials distribute BRF files. BRF files are files which primarily contain Braille ASCII, but also include
control characters, which effect how the Braille is printed or displayed. These files can then be embossed with a Braille embosseror printed, read on a Refreshable Braille display, or back-translated into standard text, which can then be read by a Screen readeror other similar program. Many find BRF files to be a more convenient way to receive brailed content, and it has increasing use as a distribution format. Unicodeincludes a means for encoding eight-dot Braille, however, Braille ASCII continues to be the preferred format for encoding six-dot Braille.
Braille ASCII values
The following table lists all of the ASCII characters, their binary, decimal and hex values, as well as the dot combinations which they represent in Braille ASCII and the Braille itself in
List of binary codes
* [http://www.tusc.net/~lizgray/codes.html About Braille: Codes, Formats, Computers, and Braille ASCII]
* [http://www.duxburysystems.com/bthist.asp Early History of Braille Translators and Embossers]
* [http://www.dotlessbraille.org/displays.htm Representing and Displaying Braille]
* [http://www.loc.gov/nls/reference/factsheets/webbraille2003.html Web-Braille fact sheet from the Library of Congress]
Wikimedia Foundation. 2010.
Look at other dictionaries:
Braille music — is a Braille code that allows music to be notated using Braille cells so that music can be read by visually impaired musicians. The Braille music system was originally developed by Louis Braille. Braille cell, 2 dots wide by 3 dots high Braille… … Wikipedia
Braille — Infobox Writing system name = Braille type = Alphabet typedesc = (non linear writing) time = 1821 to the present languages = Several fam1 = Night writing creator = Louis Braille unicode = [http://www.unicode.org/charts/PDF/U2800.pdf U+2800 to… … Wikipedia
Braille embosser — A Braille embosser is a printer, necessarily an impact printer, that renders text as Braille. Utilizing special translation software, a print document can be embossed with relative ease, making Braille production much more efficient and cost… … Wikipedia
Braille — Rampe en bois gravée en braille affichant le mot « premier ». Caractéristiques Type Code, écriture en relief Langue(s) Plusieurs … Wikipédia en Français
Braille (lectura) — PREMIER Máquina de escribir braille … Wikipedia Español
Chinese braille — (simplified Chinese: 现行盲文; traditional Chinese: 現行盲文; pinyin: Xiànxíng Mángwén, literally Current Braille ) is a braille system for the Chinese language, especially in People s Republic of China. It is different from other braille systems,… … Wikipedia
Nemeth Braille — For other uses, see Nemeth (disambiguation). The Nemeth Braille Code for Mathematics is a Braille code for encoding mathematical and scientific notation linearly using standard six dot Braille cells for tactile reading by the visually impaired.… … Wikipedia
National Braille Association — The National Braille Association, Inc. is a US organization aiming to provide continuing education to those who prepare braille, and to provide braille materials to persons who are visually impaired. The Nation Braille Association is a volunteer … Wikipedia
Alphabet Braille — Braille Braille Rampe en bois gravée en braille Caractéristiques Type Alphabet, Écriture en relief L … Wikipédia en Français
Plage braille — Une plage braille et un clavier. Une plage braille (en anglais refreshable Braille display) est un dispositif électro mécanique utilisé par les aveugles pour afficher en temps réel des caractères braille, le plus souvent issus d un ordinateur.… … Wikipédia en Français