Wiedermal was interessantes:
http://www.brolinembedded.se/projects/led_matrix/
http://www.microelect.com/led/leddotmatrix.htm
http://www.powerlight.com.tw/list.htm
http://www.vtec.ch/led.htm
http://www.cs.uml.edu/~fredm/courses...tkneelan/lab5/
http://de.geocities.com/c_schirp/led1.html