FOUR-BIT SEQUENCE GENERATOR

The above is the design of the 4-bit sequence generator. This was designed and simulated using Logic Works. Each blue frame is one flip-flop.

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TIMING

The above is the timing simulation of the 4-bit sequence generator. This simulations shows sixteen binary combinations between 0000 and 1111 produced in a "random" order. There are two cycles of the entire sequence on this simulation.
The sequence of outputs is as follows:

0000
1000
1100
1110
1111
0111
1011
0101
1010
1101
0110
0011
1001
0100
0010
0001