Happy Birthday Louis Braille

Google honors Louis Braille, the inventor of a system of writing for the blind and visually impaired based on raised dots. The braille system represents a wonderful early example of accessibility well ahead of its time. Here's a great image of someone reading braille. In looking at images of braille, I've noticed that there are different modes of presenting it. This image shows raised-dot-only text. This, however, shows ink on the dots which might help different readers. And this image shows traditional writing printed with the braille text. Finally, there are numerous devices which output digital text into braille. (You can see one in action in one of my favorite movies, Sneakers.)

[image from Google]