Evolution of reading machines for the blind: Haskins Laboratories' research as a case history.
D001766:Blindness; D003201:Computers; D049673:History, 20th Century; D006801:Humans; D011932:Reading; D012656:Self-Help Devices / Q000266:history*; D012682:Sensory Aids / Q000266:history*; D013018:Sound Spectrography; D006113:United Kingdom; D014481:United States