Computer Braille Code

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.

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.^[1] It employs only the 6-dot braille patterns to represent all code points of ASCII as well as many technical characters and commands. It is virtually identical to the Braille ASCII, a system of representation of braille with ASCII characters, which goal is mirrored to the Computer Braille Code. To represent ASCII code points 0x60, 0x7B, 0x7C, 0x7D, 0x7E as well as capital letters the 4-5-6 character is used as the shift indicator or modificator. Thus, ` (grave accent, 0x60) is represented by ⠸⠈, where ⠈ is assigned to @ (at sign, 0x40). In other words, ⠸ either adds or substracts 32 to or from the ASCII value of the following character. Unlike Braille ASCII _ (underscore, 0x40) is represented by ⠸⠸.

2) The Braille Computer Notation as defined by the Braille Authority of the United Kingdom.^[2] In this notation both 6- and 8-dot patterns may be used. With the 6-dot code various combinations of braille characters can represent many technical, mathematical and logical symbols. The ⠐ character is used as a universal modificator. 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;
• adding dots 7 and 8 adds 96 to the ASCII value.

Braille Computer Notation

	_0	_1	_2	_3	_4	_5	_6	_7	_8	_9	_A	_B	_C	_D	_E	_F
0_	Template:Chset-color-undef|	Template:Chset-color-ext-punct|☺ ⡼ 1	Template:Chset-color-ext-punct|☻ ⡈ 2	Template:Chset-color-ext-punct|♥ ⡰ 3	Template:Chset-color-ext-punct|♦ ⡸ 4	Template:Chset-color-ext-punct|♣ ⡨ 5	Template:Chset-color-ext-punct|♠ ⡯ 6	Template:Chset-color-ext-punct|• ⡄ 7	Template:Chset-color-graph|◘ ⡘ 8	Template:Chset-color-graph|○ ⡜ 9	Template:Chset-color-graph|◙ ⡔ 10	Template:Chset-color-ext-punct|♂ ⡖ 11	Template:Chset-color-ext-punct|♀ ⡂ 12	Template:Chset-color-ext-punct|♪ ⡤ 13	Template:Chset-color-ext-punct|♫ ⡲ 14	Template:Chset-color-ext-punct|☼ ⡌ 15
1_	Template:Chset-color-graph|► ⡿ 16	Template:Chset-color-graph|◄ ⡡ 17	Template:Chset-color-ext-punct|↕ ⡣ 18	Template:Chset-color-ext-punct|‼ ⡩ 19	Template:Chset-color-ext-punct|¶ ⡹ 20	Template:Chset-color-ext-punct|§ ⡱ 21	Template:Chset-color-graph|▬ ⡫ 22	Template:Chset-color-ext-punct|↨ ⡻ 23	Template:Chset-color-ext-punct|↑ ⡳ 24	Template:Chset-color-ext-punct|↓ ⡪ 25	Template:Chset-color-ext-punct|→ ⡒ 26	Template:Chset-color-ext-punct|← ⡆ 27	Template:Chset-color-ext-punct|∟ ⡦ 28	Template:Chset-color-ext-punct|↔ ⡶ 29	Template:Chset-color-graph|▲ ⡴ 30	Template:Chset-color-graph|▼ ⡢ 31
2_	Template:Chset-color-punct|SP ⠀ 32	Template:Chset-color-punct|! ⠼ 33	Template:Chset-color-punct|" ⠈ 34	Template:Chset-color-punct|# ⠰ 35	Template:Chset-color-punct|$ ⠸ 36	Template:Chset-color-punct|% ⠨ 37	Template:Chset-color-punct|& ⠯ 38	Template:Chset-color-punct|' ⠄ 39	Template:Chset-color-punct|( ⠘ 40	Template:Chset-color-punct|) ⠜ 41	Template:Chset-color-punct|* ⠔ 42	Template:Chset-color-punct|+ ⠖ 43	Template:Chset-color-punct|, ⠂ 44	Template:Chset-color-punct|- ⠤ 45	Template:Chset-color-punct|. ⠲ 46	Template:Chset-color-punct|/ ⠌ 47
3_	Template:Chset-color-digit|0 ⠿ 48	Template:Chset-color-digit|1 ⠡ 49	Template:Chset-color-digit|2 ⠣ 50	Template:Chset-color-digit|3 ⠩ 51	Template:Chset-color-digit|4 ⠹ 52	Template:Chset-color-digit|5 ⠱ 53	Template:Chset-color-digit|6 ⠫ 54	Template:Chset-color-digit|7 ⠻ 55	Template:Chset-color-digit|8 ⠳ 56	Template:Chset-color-digit|9 ⠪ 57	Template:Chset-color-punct|: ⠒ 58	Template:Chset-color-punct|; ⠆ 59	Template:Chset-color-punct|< ⠦ 60	Template:Chset-color-punct|= ⠶ 61	Template:Chset-color-punct|> ⠴ 62	Template:Chset-color-punct|? ⠢ 63
4_	Template:Chset-color-punct|@ ⡮ 64	Template:Chset-color-alpha|A ⡁ 65	Template:Chset-color-alpha|B ⡃ 66	Template:Chset-color-alpha|C ⡉ 67	Template:Chset-color-alpha|D ⡙ 68	Template:Chset-color-alpha|E ⡑ 69	Template:Chset-color-alpha|F ⡋ 70	Template:Chset-color-alpha|G ⡛ 71	Template:Chset-color-alpha|H ⡓ 72	Template:Chset-color-alpha|I ⡊ 73	Template:Chset-color-alpha|J ⡚ 74	Template:Chset-color-alpha|K ⡅ 75	Template:Chset-color-alpha|L ⡇ 76	Template:Chset-color-alpha|M ⡍ 77	Template:Chset-color-alpha|N ⡝ 78	Template:Chset-color-alpha|O ⡕ 79
5_	Template:Chset-color-alpha|P ⡏ 80	Template:Chset-color-alpha|Q ⡟ 81	Template:Chset-color-alpha|R ⡗ 82	Template:Chset-color-alpha|S ⡎ 83	Template:Chset-color-alpha|T ⡞ 84	Template:Chset-color-alpha|U ⡥ 85	Template:Chset-color-alpha|V ⡧ 86	Template:Chset-color-alpha|W ⡺ 87	Template:Chset-color-alpha|X ⡭ 88	Template:Chset-color-alpha|Y ⡽ 89	Template:Chset-color-alpha|Z ⡵ 90	Template:Chset-color-punct|[ ⡷ 91	Template:Chset-color-punct|\ ⡐ 92	Template:Chset-color-punct|] ⡾ 93	Template:Chset-color-punct|^ ⡠ 94	Template:Chset-color-punct|_ ⡬ 95
6_	Template:Chset-color-punct|` ⠮ 96	Template:Chset-color-alpha|a ⠁ 97	Template:Chset-color-alpha|b ⠃ 98	Template:Chset-color-alpha|c ⠉ 99	Template:Chset-color-alpha|d ⠙ 100	Template:Chset-color-alpha|e ⠑ 101	Template:Chset-color-alpha|f ⠋ 102	Template:Chset-color-alpha|g ⠛ 103	Template:Chset-color-alpha|h ⠓ 104	Template:Chset-color-alpha|i ⠊ 105	Template:Chset-color-alpha|j ⠚ 106	Template:Chset-color-alpha|k ⠅ 107	Template:Chset-color-alpha|l ⠇ 108	Template:Chset-color-alpha|m ⠍ 109	Template:Chset-color-alpha|n ⠝ 110	Template:Chset-color-alpha|o ⠕ 111
7_	Template:Chset-color-alpha|p ⠏ 112	Template:Chset-color-alpha|q ⠟ 113	Template:Chset-color-alpha|r ⠗ 114	Template:Chset-color-alpha|s ⠎ 115	Template:Chset-color-alpha|t ⠞ 116	Template:Chset-color-alpha|u ⠥ 117	Template:Chset-color-alpha|v ⠧ 118	Template:Chset-color-alpha|w ⠺ 119	Template:Chset-color-alpha|x ⠭ 120	Template:Chset-color-alpha|y ⠽ 121	Template:Chset-color-alpha|z ⠵ 122	Template:Chset-color-punct|{ ⠷ 123	Template:Chset-color-punct|| ⠐ 124	Template:Chset-color-punct|} ⠾ 125	Template:Chset-color-punct|~ ⠠ 126	Template:Chset-color-ext-punct|⌂ ⠬ 127
	_0	_1	_2	_3	_4	_5	_6	_7	_8	_9	_A	_B	_C	_D	_E	_F

References

1. Computer Braille Code: 2000 Revision. Braille Authority of North America. 2000.
2. Braille Computer Notation (PDF). Braille Authority of the United Kingdom (Computer Committee). 2006.