For all of those who purchased an Obtronix board (not the kit) on ebay several years ago, there is a bug on this board. I can't say we all have the same board, but the board I have is missing a trace on D7 (74161) from pin 7 to pin 10. This bug was causing characters to repeat after a reset. I soldered a jumper wire across these pins, and the repeating chars stopped. This bug was found by Mike Willegal (willegal.net). I verified these pins were not connected by using a multimeter.