Ultrasonic Sensors for NAVIGATION
The DREAM
Imagine a Braille literacy scenario: a room filled with blind children and adults enjoying themselves
some reading their English textbooks
some the Bible, the Koran, and other holy writings
some writing or editing a manuscript for a book
some learning French or Mandarin on the internet
some providing distance counseling
some teaching Braille in a classroom halfway around the globe
a scholar writing an acceptance speech as a Nobel Prize awardee