What does the dot on the elevator button mean?

Braille. Some buttons are on the elevator, others are not. Blind people can touch the Braille on the button to determine the label on the button. Braille, also known as Braille, Braille is designed for the blind, and it is perceived by touch. Through braille board, braille machine, braille printer, etc. Different bump combinations are formed on the paper. Generally, the Braille of each square consists of six dots, with 123 on the left and 456 on the right, which is called a party.

Braille. Some buttons are on the elevator, others are not. Blind people can touch the Braille on the button to determine the label on the button.

Braille, or Braille and Braille, is a kind of writing designed for the blind, which is perceived by touch. Through braille board, braille machine, braille printer, etc. Different bump combinations are formed on the paper. Generally, the Braille of each square consists of six dots, with 123 on the left and 456 on the right, which is called a party. It was created by the French blind Louis Blair in 1824, so it is called "Blair" internationally.

The National Common Sign Language Vocabulary and the National Common Braille Program have been examined and approved by the Standardization Review Committee of the State Language Committee and approved by the China Disabled Persons' Federation, the Ministry of Education and the State Language Committee. They were published as language specifications and came into effect on July 8, 2008/kloc-0.