What do blind people write with?

Braille is made up of dots. Braille dots are the words of the blind. There is no concept of left and right in the words of the blind, only a point as big as a small grain of rice. These dots represent Chinese characters, English letters, Roman characters, Arabic numerals and so on.

It is said that words are the most direct inheritance, and the blind will not lack words, let alone graphics, because the courses of the blind and the discerning are the same. In mathematics, there are all kinds of geometric figures, such as circles, triangles, quadrangles, and three-dimensional figures, such as cuboids, cubes, cylinders, cones and so on. Physical circuit diagram and stress diagram, these are also to be touched with your fingers.

Extended data:

In fact, blind people also have a lot of homework. Blind people need braille boards, blind pens and braille paper to write. Braille paper is more plastic and thick, just like kraft paper you have seen. The blind writing pen has no ink and pen oil. It only has a sharp metal nib. Writing pens for the blind are like awls used in our daily life. When the braille paper is clamped on the braille board, the braille board plays the role of assisting the blind to write. Braille board can be approximately regarded as a mold, through which braille paper is tied up one by one with a blind pen, and the braille paper is written unevenly.

Braille boards have four rows, nine rows and twenty-seven rows, and one row has twenty-four squares, twenty-eight squares or thirty squares. Only six dots can be stuck in a grid, but in many cases, six dots can't be filled in, because Braille is spelled with 56 letters.

Baidu Encyclopedia-Braille