24
3-21. In a bistable multivibrator, what
minimum number of triggers is required
to produce one gate?
1. One
2. Two
3. Three
4. Four
3-22. Which of the flip flops shown below is in
the SET state?
1.
2.
3.
4.
3-23. Which of the flip flops shown below is in
the CLEAR state?
1.
2.
3.
4.
3-24. Which of the following pulses is used to
change states in a flip flop?
1. A trigger pulse
2. A clipping pulse
3. A modulating pulse
4. An interference pulse
