Braille is a tactile writing system utilized by people who find themselves blind or visually impaired. It was invented by Louis Braille within the nineteenth century and has since grow to be essentially the most broadly used tactile writing system on the earth.
Braille is made up of raised dots which are organized in cells. Every cell accommodates one to 6 dots, and the completely different preparations of dots characterize completely different letters, numbers, and symbols. Braille can be utilized to put in writing any language, and additionally it is used for music notation and arithmetic.