The other complementary project he is working on is the Braille Keyboard – a tactile input ... connection to a smartphone and a USB port for computer use. The device will be battery powered ...
the keyboard has 3-key rollover (3KRO), which is necessary for fast touch typing. Gamers and Braille users generally require 6-key rollover (6KRO). To test the rollover number, press three ...
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