In the past the only way a blind person could read was to run his fingers over blocks of wood in which there were carved letters, and try to read the letters with his fingers.
Then, in 1829, a young Frenchman named Louis Braille invented a better system, one that allowed blind people to write and read. This system was named after the inventor.
Braille, who was also blind, invented an alphabet that consisted of combining several dots in relief into cells. Each combination from six dots represents a different letter.
A blind person can run his fingers over these dots and know which letter they represent. There are even Braille typewriters that allow a blind person to write.
Louis Braille was only 15 years old when he developed his system of reading raised dots.
.
