On the Subject of Braille
This doesn’t feel right.
See Appendix BLANK for blank modules identification.
Braille consists of raised dots arranged in a regular grid. Each letter has 2×3 locations, each of which can have a raised dot or not. The following table shows the encoding for Unified English Braille.
a
| b
| c
| d
| e
| f
| g
| h
| i
| j
|
k
| l
| m
| n
| o
| p
| q
| r
| s
| t
|
u
| v
| w
| x
| y
| z
| and
| for
| the
| with
|
ar
| bb
| cc
| ch
| ea
| ed
| en
| er
| ff
| gg
|
gh
| in
| ing
| of
| ou
| ow
| sh
| st
| th
| wh
|
- Move your finger over the module to feel the Braille message. The message consists of 4 Braille letters with 6 locations. However, some of the raised dots may be extraneous and some may be missing.
- The locations are numbered in columns from top to bottom, then left to right.
- To find out which locations are wrong, first convert the letters in the serial number to their alphabetic positions (where A=1, …, Z=26).
- Start with the location numbered according to the first character of the serial number plus one.