Do you know Louis Braille?

Louis Braille was a famous French inventor. Having become blind at the age of three, he later invented a system of writing to enable blind or visually impaired people to read.

The system is called “Braille code,” or simply “Braille,” after its inventor. It uses raised dots, or little bumps, arranged in different combinations. Each combination represents a letter of the alphabet, a punctuation mark, a numeral, a mathematical symbol, or a music note.

So, when a sight-impaired person slides their fingertip over these bumps, they recognize the different arrangements. That’s how they know that they’re touching an “A” or a “4,” for example. Isn’t it amazing?