Lesson 1

The Braille Alphabet

1.1 In General

Braille is a system for tactile reading and writing. It uses characters formed by combinations of six embossed dots that are arranged within the braille cell in two vertical columns of three dots each. A simple braille character is formed by one or more of these dots, and it occupies a full cell or space.

For convenience, the dots of the braille cell are referred to by number and correspond to the keys on a braillewriter.
Braille Cell Braillewriter
1 4
2 5
3 6

U U U
3 2 1
[[[[]]]] U U U
4 5 6