This article is from the Ergonomics and Typing Injury FAQ, by Dan Wallach firstname.lastname@example.org with numerous contributions by others.
3660 Mill Green Rd.
Street, Md 21154 USA
(information provided by Doug Martin <email@example.com>)
The Braille N Speak uses any of several Braille codes for entering
information: Grade I, Grade II, or computer Braille. Basically, letters
a-j are combinations of dots 1, 2, 4, and 5. Letters k-t are the same
combinations as a-j with dot 3 added. Letters u, v, x, y, and z are like
a-e with dots 3 and 6 added. (w is unique because Louis Braille didn't
have a w in the French alphabet.)