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For each of the positive edge-triggered J-K flip flop used in the following figure, the propagation delay is ΔT
Which of the following waveforms correctly represents the output at Q1?
  • a)
  • b)
  • c)
  • d)
Correct answer is option 'B'. Can you explain this answer?
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Most Upvoted Answer
For each of the positive edge-triggered J-K flip flop used in the fol...
Since the input to both JK flip-flop is 11, the output will change every time with clock pulse. The input to clock is
The output Q0 of first FF occurs after time ΔT and it is as shown below
The output Q1 of second FF occurs after time ΔT when it gets input (i.e. after ΔT from t1) and it is as shown below
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For each of the positive edge-triggered J-K flip flop used in the fol...
Since the input to both JK flip-flop is 11, the output will change every time with clock pulse. The input to clock is
The output Q0 of first FF occurs after time ΔT and it is as shown below
The output Q1 of second FF occurs after time ΔT when it gets input (i.e. after ΔT from t1) and it is as shown below
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Comprehension:Read the following paragraph and answer the questions.A digital counter is a set of flipflops whose states change in response to the pulses applied at Input. Counters can be asynchronous counters or synchronous counters. A counter is an example of a state machine; the number of states is called the modulus. Two basic types of state machines are the Moore and the Mealy. In Moore machine, the combinational logic is a gate array with outputs that determine the next state of the flip-flops in the memory. For Mealy machine, the present state affects just as in Moore machine but in addition, the inputs also affect the outputs.In a 4-bit asynchronous binary counter, each D flip-flop is negative edge-triggered and has a propagation delay for 10 nanoseconds. What is the highest frequency allowed for the counter to avoid problems due to propagation delay?

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For each of the positive edge-triggered J-K flip flop used in the following figure, the propagation delay is ΔTWhich of the following waveforms correctly represents the output at Q1?a)b)c)d)Correct answer is option 'B'. Can you explain this answer?
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