Universal system of writing and printing for the Blind. The Frenchman Louis Braille invented the system in 1824. Characters embossed on paper are read by passing the fingers lightly over the manuscript.

• 当今国际通用的盲文符号,是布拉耶于1824年发明的。利用纸上的凸点透过触觉最灵敏的手指尖来摸读。