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Vì sao nút bấm trên thang máy có những dấu chấm nổi?

Vì sao nút bấm trên thang máy có những dấu chấm nổi?
Vì sao nút bấm trên thang máy có những dấu chấm nổi?

Những dấu chấm này là gì? Chúng có công dụng gì? Vì sao chúng được in nổi?

Trong cuộc sống hàng ngày chúng ta thường nhìn thấy hay bắt gặp rất nhiều thứ kỳ lạ nhưng vì chúng quá quen thuộc và không gây ảnh hưởng gì đến cuộc sống nên hầu như chúng ta đều không để ý đến những điểm kỳ lạ này. Chẳng hạn trong thang máy, bạn sẽ nhận thấy các nút bấm của nó có in nổi những chấm tròn nhỏ xíu nằm phía dưới hay bên cạnh những con số hay chữ. Vậy bạn có bao giờ thắc mắc những chấm nhỏ này dùng để làm gì chưa?


Vì sao nút bấm thang máy lại có những chấm nhỏ này?

Thật ra đây chính là hệ thống chữ viết Braille hỗ trợ cho người khiếm thị, được một người Pháp có tên Louis Braille phát minh vào năm 1824 sau khi ông bị mù cả hai mắt do một tai nạn từ khi mới 3 tuổi. Mỗi chữ Braille được tạo thành từ 6 điểm được sắp xếp trong một khung hình chữ nhật gồm 2 cột và 3 dòng. Tùy vào từng con chữ mà ta sẽ có các chấm nổi ở các vị trí khác nhau hiện lên trong phạm vi 6 điểm này.

Ở Việt Nam, chữ Braille được đưa vào sử dụng từ cuối thế kỷ 19 dựa theo hệ thống chữ Braille của Pháp. Tuy nhiên có một điều khá rắc rối là trong tiếng Việt có những chữ không có trong tiếng Pháp, chẳng hạn Đ, Ơ, Ư… Vì thế các nhà nghiên cứu đã xem xét sử dụng những chữ như Z, Ü hay Œ để thay thế.

>> Hàng Authentic là hàng là gì? Bật mí những điều khác biệt của Túi xách Auth với túi Fake


Các chấm nhỏ này chính là chữ Braille hỗ trợ người khiếm thị.


Hệ thống chữ Braille của thế giới.


Hệ thống chữ Braille dùng cho tiếng Việt.


Chữ Braille xuất hiện ở hầu như mọi dịch vụ công cộng chứ không riêng gì thang máy.


Một em bé khiếm thị đang đọc chữ Braille trong thang máy.

http://thangmaydonghai.com

 

 

 
 

 

 

 

thangmaydonghai.com
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