Objective: Design and test a $4-$bit Right shift register with serial input. Part I Use D flip$-$flops $($FF$)$ in your design $($Memory $->$ D Flip$-$Flop$).$ Ensure the output of each FF $($Q$)$ goes to an output so the functionally of the shift register can be verified. All $4$ Flip$-$Flop need to share a common clock which is connected to an input you control. Part II Modify the circuit so that if the register contains $0101$ OR $1000$ an output signal goes active $($logic $1).$ Verify the functionally of the circuit by shifting in the two values to be detected and ensure the output goes high $($logic $1).($please show a example of the circuit$)$