Q. 304.0( 13 Votes )

Write an essay on "B

Answer :

The most popular resource for visually challenged persons is known as Braille. Louis Braille, himself a blind person, developed a system for visually challenged persons and published in 1821. The present system was adopted in 1932. There is Braille code for common languages, mathematics, and scientific notation. Indian languages such as Hindi, Sanskrit, Marathi, Gujarati, Bengali, Tamil, Telugu and Urdu, can be read using the Braille system Braille system has 63 dot patterns or characters. Each character represents a letter combination of letters, common word or grammatical sign.Visually challenged people learn the above system by beginning with letters and then to special characters and letter combinations. Methods depend upon recognition by touching. Each character has to be memorised. Braille texts can be produced by hand or by machine. To write Braille by hands, a slate is used consisting to two metal plates hinged together with paper in between them. A writer inserts a stylus to make dot patterns through a cell size opening on the upper plate. Type writer like devices and printing machines which use enclosed zinc plates to make coded impressions on paper, have also been developed.

Rate this question :

How useful is this solution?
We strive to provide quality solutions. Please rate us to serve you better.
Related Videos
Quiz | Lets Have a Faceoff with Light!!Quiz | Lets Have a Faceoff with Light!!Quiz | Lets Have a Faceoff with Light!!37 mins
Quiz | Imp. Qs. on LightQuiz | Imp. Qs. on LightQuiz | Imp. Qs. on Light36 mins
Rapid fire quiz on LightRapid fire quiz on LightRapid fire quiz on Light39 mins
Quiz | Lets Revise LightQuiz | Lets Revise LightQuiz | Lets Revise Light29 mins
Lakhmir Singh | LightLakhmir Singh | LightLakhmir Singh | Light45 mins
Lakhmir singh | Part-3 (Light)Lakhmir singh | Part-3 (Light)Lakhmir singh | Part-3 (Light)45 mins
NCERT Exemplar | Part-1 (Light)NCERT Exemplar | Part-1 (Light)NCERT Exemplar | Part-1 (Light)40 mins
NCERT Exemplar | LightNCERT Exemplar | LightNCERT Exemplar | Light37 mins
Lets Learn About Convex LensLets Learn About Convex LensLets Learn About Convex Lens46 mins
Foundation | Multiple Reflections of LightFoundation | Multiple Reflections of LightFoundation | Multiple Reflections of Light38 mins
Try our Mini CourseMaster Important Topics in 7 DaysLearn from IITians, NITians, Doctors & Academic Experts
Dedicated counsellor for each student
24X7 Doubt Resolution
Daily Report Card
Detailed Performance Evaluation
caricature
view all courses