A 4-bit serial-in serial-out shift register which is triggered by positive clock pulses is fed with an input data 1101
(i) Draw the circuit diagram using a D flip-flop
(ii) Use the circuit diagram in Q5a(i) to explain how the data 110 I is stored in the register at the various clock pulses
(b) Calculate the propagation delay  introduced by each flip-flop if the clock frequency is 10MHz [5 marks
(c) State two applications of registers