13. The truth table for an S-R flip-flop has how many VALID entries? a) 1 b) 2 c) 3 d) 4 14. How is a JK flip-flop made to toggle? a) J=0,K=0 b) J=1,K=0 c) J=0,K=1 d) J=1,K=1 15. In D flip-flop, D stands for a) Distant b) Data c) Desired d) Delay 16. A register is defined as a) The group of latches for storing one bit of information b) The group of latches for storing n-bit of information c) The group of flip-flops suitable for storing one bit of information d) The group of flip-flops suitable for storing binary information