Virtual Labs

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Aim

Theory

Pretest

Procedure

Simulation

Posttest

References

Contributors

Feedback

Registers and Counters

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Beginner

Intermediate

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Which statement BEST describes the operation of a negative-edge-triggered D flip-flop?

a: The Q output is ALWAYS identical to the CLK input if the D input is HIGH Explanation

Explanation

b: The logic level at the D input is transferred to Q on NGT of CLK Explanation

Explanation

c: The Q output is ALWAYS identical to the D input when CLK = PGT Explanation

Explanation

d: The Q output is ALWAYS identical to the D input Explanation

Explanation

Ring counter is similar to

a: Stepping switch Explanation

Explanation

b: latch Explanation

Explanation

c: SR flipflop Explanation

Explanation

d: Toggle flipflop Explanation

Explanation

what is the number of flipflops needed to design a mod-19 counter?

a: 5 Explanation

Explanation

b: 4 Explanation

Explanation

c: 6 Explanation

Explanation

d: 7 Explanation

Explanation

The dynamic problem hazards can occur both in combinational and sequential circuits

a: True Explanation

Explanation

b: False Explanation

Explanation

How is a J-K flip-flop made to toggle?

a: J = 0, K = 0 Explanation

Explanation

b: J = 1, K = 1 Explanation

Explanation

c: J = 1, K = 0 Explanation

Explanation

d: J = 0, K = 1 Explanation

Explanation

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