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Question

Braille script, which is used by blind persons for reading and writing, was developed by whom?


  1. Louis Pasteur

  2. Louis Braille​

  3. Abraham Lincon
  4. Alexander Fleming


Solution

The correct option is B

Louis Braille​


Louis Braille, himself a visually challenged person, developed a system for visually challenged persons and published it in 1821. It is known as Braille script. Braille system has 63 dot patterns or characters. Each character represents a letter, a combination of letters, a common word or a grammatical sign. Dots are arranged in cells of two vertical rows of three dots each.

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