In order to enable severely visually impaired and blind persons to work with the computer, such terminals
are equipped with devices that allow these groups of persons to grasp the screen content in their own way, namely tactilely via Braille. Corresponding terminals for the blind are called Braille terminals after the developer of Braille. Braille terminals are electromechanical terminals that can display Braille characters line by line, namely in Braille lines. Braille characters are represented by raised dot matrices of 6 or 8 dots arranged in three or four rows of two dots each. To mark such a sign
, small pins are raised or lowered through holes so that the visually impaired person can scan them with his or her fingertips.
is applied to it.screen
reader. Inaddition to tactile output, screen readers can also output the screen display acoustically as speech
. A further development of the braille display is the braille tablet, which works with microfluidic bubbles and can display an entire page of text in braille.