Super simple circuit using a 8-channel multiplexer, and may help you understand how a multiplexer works. Metal beads strung on conductive thread are connected to each of the three control pins so that they can swing and make contact with either GND(-) or VCC(+). 8 LEDs are connected to the 8 output pins of the multiplexer. The various combinations of the beads touching plus and minus result in a different LED lighting up.
Video:
Multiplexer Table
Making-of
Flickr set >> http://www.flickr.com/photos/plusea/sets/72157615409091847/
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