Here are some videos of speaking
communication aids accessed by switches.
Visibility also depends on the codecs installed on your computer.
Three videos of row-column scanning with tricks
Introduction to active row-column scanning with a moving matrix and an empty first column.
Short video about active row-column scanning with a single switch.
Detailed video including reversing direction and Down accepts.
Video about Oriented Scanning.
WriteEasy Overview for Windows Media Player.
Older video Text based communication aid with word prediction, Alternative Code, sustained dashes and synthetic speech, accessed by a single switch and after training.
One switch Morse Code plus word prediction after repeated entry of ‘the quick brown fox jumped over the lazy dog’.