Understanding Clock Counter Complementing in Digital Circuits

[transgalactic]

i understood that each time a digit complements
and complements the next digit etc..
but i can't see how it works
because if its truee then from the 0000 state
by one pulse we will have 1111

i can't ubderstand how we get the numbers between

here is circuit
http://img146.imageshack.us/my.php?image=img86761zw2.jpg

 

[berkeman]

No, the first clock pulse increments the first FF 0-->1, then the next clock pulse toggles the output of the first FF 1-->0, and that falling edge is the clock edge to the 2nd FF. So the 2nd clock takes the output from 0001--> 0010.

The key here is that the output of on FF feeds the next higher significant bit FF. Do you see that now?

 

[transgalactic]

oohh ok i am starting to see it