Asynchronous counters

[jonbrutal]

Hi everyone

I built a 4 bit asynchronous counter:
]http://img257.imagevenue.com/loc211/th_64901_1253864766223_122_211lo.jpeg[/URL]

, the sequence is
1,2,3,4 right up to F and then 0,1,2,3....

My question is why doesnt the up counter start with 0...can someone explain it to me.Is this the correct sequence for a asynchrbous up counter.

Thank you & regards

http://img257.imagevenue.com/img.php?loc=loc211&image=64901_1253864766223_122_211lo.jpeg

[Kenneth Mann]

Your drawing is toot small to make out.

KM