MODERATOR EDIT: This was split from here: http://forum.allaboutcircuits.com/showthread.php?t=81140 Thank you for this post! I think that this may be exactly what I am looking for.. Light up all LED's one by one and leave them on, once all are on... reset, right? I have never dealt with decade counters before, I have a PICkit2 programmer, But have failed to figure out any information on programming a CD4017B, so I am not sure what I am supposed to do with the asc file. I would like to try and have this circuit completed by December, for my wife's graduation. I would like to verify the parts list with someone, if anyone would be so kind. 100 leds 20 2N3904 transistors 2 CD4017B decade counters 10 1k ohm resistors 1 300 ohm resistor 1 220k ohm resistor 1 200k ohm resistor 2 100n capacitor 3 CD4093B NAND GATE "Schmitt trigger quad NAND package"? I would truely appreciate any help at all. Happy wife, happy life right?