. To design a mod - 8 ring counter, the number of flip flops required is (1) 3 (3) 5 (2) 4 (4) 8 - (5) Question not attempted - The type of register, in which data is entered into it only one bit at a time, but has all data bits available as output simultaneously is (1) serial in/parallel out register (2) serial in/serial out register (3) parallel in/serial out register (4) parallel in/parallel out register (5) Question not attempted Which of the following single gate can be used for 'sum' output of half adder? (3) XOR gate (2) XNOR gate (3) AND gate (4) OR gate (5) Question not attempted The outputs of the two flip-flops, Q and Q2 in the figure shown are initialized to 0, 0. The output Q1 and Q2 after the application of four clock pulses will be CLK I1 Q1 12 Q2 K Q1 K2 Q2 (1) Q = 1, Q2 = 1 (2) Q = 0, Q2=0 (3) Q = 1, Q2 = 0 (4) Q = 0, Q2=1 (5) Que 22/05/201ted 4:56 empted