These books are accompanied by Braille letters for the visually impaired and children with special needs.

As the wheel spins, the pins pop out to make the raised Braille letters, which move under the user's stationary hand.

The elevators can be used by visually impaired persons with the elevator buttons having Braille letters.

Blind people everywhere liked to write messages in their own Braille letters.

For example, Tibetan ka, kha, ga, nga are written with the standard Braille letters for k, c, g and lowered g. It was submitted for examination to a Tibetan scholar, who found it to be readily understandable, simple, and easy to learn.

It's not all plotted out yet, but I have a great, surprise ending: the last Braille letter will be replaced with a thumbtack.

Dialing and access instructions, similar to those of a conventional Foncard, will be sent to customers in a Braille letter.

Joe Bhattacharyya, 30, was seated in front of a personal computer with a monitor and two keyboards, one standard and one that displays "refreshable" Braille by pushing up formations of electronic pins to form Braille letters.

It contains a mechanism which can translate Braille letters into musical notes, and visitors can move the music box within the sculpture to hear this unique music.