1. The problem statement, all variables and given/known data Problem is here: http://i.imgur.com/DrI08.png 2. Relevant equations For D Flip-Flop: D = Q+ 3. The attempt at a solution In red on the picture above, I have written what I think the output will be through the first clock cycle. Next state would be 0011, but answer is 0000. Am I missing something about the D flip flop?