Louis Braille was known for developing a system of raised dot writing used for the blind to read. This system is called the Braille system. Braille characters make up the letters of the alphabet, punctuations marks, numbers, and can be used in every foreign language. There are even Braille codes for math, music, and computers.
Born - January 4, 1809
Died - January 6, 1852
A PBS Teachers lesson plan for students grades K-12.
Explanation of the Braille system
From Omniglot - writing systems and languages of the world
The Braille Bug Site
From the American Foundation for the Blind
The life of Louis Braille
From the Royal National Institute of the Blind
Louis Braille: A Touch of Genius
From National Braille Press