Why braille terminal and not any other type of assistive device?

The advantages of braille display over synthetic speech and screen readers are that it provides direct access to information; allows the user to check format, spacing, and spelling; and is quiet. Also, it allows the integration of a new category of users, those who have auditory and visual disabilities at the same time.
In addition, with the new generation of refreshable braille display, users can now type and take notes using the device. It is compatible with most electronic devices and operating systems used nowadays like Windows and Macintosh. Most importantly, those braille displays allow users of all ages with visual impairments to have a full experience of the device they are working on.