Braille is a tactile writing system used by people who are visually impaired or blind. It consists of raised dots arranged in specific patterns to represent letters, numbers, and punctuation. Each character is made up of a combination of six dots, organized in two columns of three dots each. Developed by Louis Braille in the early 19th century, Braille allows users to read by feeling the dots with their fingertips. It is used worldwide and has been adapted for various languages and applications, including music and mathematics, making it an essential tool for accessibility and education.