A simple 4-bit shift register circuit is shown in Figure B.4(i). Analyze the operation of this shift register circuit. Read the register output as a 4-bit binary Q[3..0] and complete the timing waveform given in Figure B.4(ii). Input Shift Clock Clock Input Q3 DO DO DO DO Shift Q2 Q[3.00] 0000 1000 Figure B.4(i) [12 marks] Figure B.4(ii)