How technology has changed.

Whenever I think back to the earliest technology I used, I am amazed at how much it has changed. I learned to read braille first. With a huge, heavy, braille machine and enormous books. Each book was several volumes of braille. I learned to type on a regular typewriter but I was always unable to proof read documents. I also never knew when the ribon ran out. Gradually, we began hearing about paperless braille. I couldn't believe something like this would ever happen. Braille that appeared and disappeared and you didn't have to carry it around? But it has happened. tomorrow, descriptions of braille displays.