Latches, Flip-Flops, and Timers MCQs

31. On a master-slave flip-flop, when is the master enabled?

1. when the gate is HIGH
2. when the gate is LOW
3. both of the above
4. neither of the above

32. When is a flip-flop said to be transparent?

1. when you can see through the IC packaging
2. when the Q output follows the input
3. when the Q output is opposite the input
4. None

33. How can the cross-coupled NAND flip-flop be made to have active-HIGH S-R inputs?

1. Invert the S-R inputs.
2. Invert the Q outputs.
3. It can’t be done.
4. None

34. One example of the use of an S-R flip-flop is as a(n):

1. transition pulse generator
2. binary storage register
3. astable oscillator
4. racer

35. Which of the following is correct for a gated D flip-flop?

1. Q output follows the input D when the enable is HIGH.
2. The output complement follows the input when enabled.
3. Only one of the inputs can be HIGH at a time.
4. The output toggles if one of the inputs is held HIGH.