Question

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

• A. Louis Pasteur
• B. Louis Braille​
• C. Abraham Lincon
• D. Alexander Fleming

Answer 1

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.