2011-04-25

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Applied Science

Here's a project that makes use of these electronic Braille characters: http://www.metec-ag.de/braille%20cell%20p16.html

I built a bunch of transistor amplifiers and use two 74hc373 chips driven by the parallel port to control the state of both Braille characters.

Excellent resource for PC parallel port control:

http://www.beyondlogic.org/spp/parallel.htm