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{{Short description|Braille for representation of computer-related materials}}
'''Computer Braille''' is an adaptation of [[braille]] to represent the computer code. Unlike standard 6-dot braille scripts, but like [[Gardner–Salinas braille codes]], this may employ the extended 8-dot braille patterns. The resulting 256 braille characters are assigned to the 256 characters of 8-bit computer encodings.▼
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|style="background:#222;color:#FFF;border:1px solid #777;border-radius:1em;padding:2px .5em"|'''1'''
|style="background:#222;color:#FFF;border:1px solid #777;border-radius:1em;padding:2px .5em"|'''4'''
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|style="background:#222;color:#FFF;border:1px solid #777;border-radius:1em;padding:2px .5em"|'''2'''
|style="background:#222;color:#FFF;border:1px solid #777;border-radius:1em;padding:2px .5em"|'''5'''
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|style="background:#222;color:#FFF;border:1px solid #777;border-radius:1em;padding:2px .5em"|'''3'''
|style="background:#222;color:#FFF;border:1px solid #777;border-radius:1em;padding:2px .5em"|'''6'''
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|style="background:#FFF;color:#777;border:1px solid #AAA;border-radius:1em;padding:2px .5em"|'''7'''
|style="background:#FFF;color:#777;border:1px solid #AAA;border-radius:1em;padding:2px .5em"|'''8'''
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<div>Standard numbering of dots in 8-dot Braille patterns.</div>
</div>
▲'''Computer Braille''' is an adaptation of [[braille]]
There are two standards of representation of computer code with braille:
1) The '''Computer Braille Code''' as defined by the [[Braille Authority of North America]].<ref>{{cite book|title=Computer Braille Code: 2000 Revision|date=2000|publisher=Braille Authority of North America|url=http://www.brailleauthority.org/cbc/cbc.html}}</ref> However, since January 2016 it is no longer official in the US and replaced by [[Unified English Braille]] (UEB). It employs only the 6-dot braille patterns to represent all printing code points of [[ASCII]]
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{{chset-table-header|Computer Braille Code}}▼
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2) The '''Braille Computer Notation''' as defined by the [[Braille Authority of the United Kingdom]].<ref>{{cite book|title=Braille Computer Notation|date=2006|publisher=Braille Authority of the United Kingdom (Computer Committee)|url=http://www.ukaaf.org/wp-content/uploads/2015/05/Braille-Computer-Notation-PDF.pdf|archive-url=https://web.archive.org/web/20200801050601if_/https://www.ukaaf.org/wp-content/uploads/2015/05/Braille-Computer-Notation-PDF.pdf|archive-date=2020-08-01|url-status=dead}}</ref>
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:
* the composition of Braille dot 8 adds 128 to the ASCII value (not shown in the table below, it is used for extensions for 8-bit codes of ASCII-based encodings, including single-byte encodings like ISO/IEC 8859 and other legacy Windows and OEM codepages, or multibyte encodings like Unicode UTF-8).
The dot-5 ({{braille cell|5}}) character is used as a universal modifier{{clarification needed|date=April 2023}}.
The following table assumes the 8-bit data is encoding text in the [[CP437]] character set used on the IBM PC.
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{{Braille}}
[[Category:Braille]]
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