demonstration video here.
3x 16f54 - 1 master, 2 displays.
http://pic.hitechworld.org/16f54pcb.html
I want to use the display for instance:
http://www.flickr.com/photos/takao21203/6988661837/
radiation counter, powered by 2.4 volts.
If you are interested in any of these displays, price is only $6.