Background
The tactile Braille writing system is one of the most important ways for visually impaired people to read and write texts. The Braille lettering is a coded language, that displays each letter, number or other character in a 6- (or 8-)point form. It is both used on embossed paper or on refreshable Braille displays. These refreshable displays are essential for the use of digital devices.
Task Description
necessary data:
- max. Size
- min. speed
- low cost
- usual Braille pin-sizing
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