Braille is a code of letters and symbols that is read by fingers moving across a series of raised dots. The Braille code that is used today is based on one that Louis Braille developed in the mid-1800s. There are several forms of Braille, including the most common, Literary Braille.
A refreshable Braille display is a tactile device that can raise or lower dot patterns on command from an electronic device such as a computer. It is placed near or under the keyboard. The information is sent from the computer screen to the Braille display a person places their fingers on the display and reads the information The result is a line of Braille that will change in accordance with the information sent from the computer. Because the pins appear and disappear, the display is known as "refreshable." Braille displays are the primary means of access to computers for users who are visually impaired.
Portable Braille displays are also available and can be used with both Laptop and Desktop computers.
Most Braille displays come with its own software, but sometimes additional software may be required depending on the operating system being used. Also be sure that your computer has the type of port required to connect to the Braille display.
The most popular models can display a single row of 40 Braille cells and cost approximately € 5,000.