Question

World Braille Day is observed on

A. 4th January

B. 21st January

C. 14th January

D. 4th March

Answer 1

Hint: In the $19^{th}$ century, the braille code was invented by Louis Braille. There were six projected dots from left to right within a rectangle in this code. An individual who has to read must move his/her fingertips above the predicted dotted patterns from left to right. The rectangular block is like a matrix of 3 by 2 and per column has 3 dotted patterns.

Complete answer: 

Braille is a globally recognised writing format used by blind people. It involves the use of word-punctuated patterns and consists of a 63-character code, each containing one to six raised dots arranged in a six-place matrix. By running the fingers slightly over the coded manuscript, these Braille parameters are marked deep in lines on paper and read. Braille models for mathematical and symphony notation are now being embraced and developed. World Braille Day, the birthday of Louis Braille, the inventor of Braille, is observed annually on January 4th. The day honours Louis Braille's contributions to helping blind and visually disabled people to read and write. Therefore, on 4 January, World Braille Day is observed.

So, option (A) is the right answer.

Note: Devices used to write braille are slates and stylus. It uses a plastic driven slate hinged on one end. A slate may have various shapes and sizes. A stylus is a small tool that is 3 inches long with a metal dot at one end and a wooden knob with a plastic head at the other end. Card stock paper consists of a slate and the stylus is used to punch holes in the paper. The punched holes are the predicted dots that can be read just by touching.