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One of the major drawbacks to the use of asynchronous counters is that ____________
  • a)
    Low-frequency applications are limited because of internal propagation delays
  • b)
    High-frequency applications are limited because of internal propagation delays
  • c)
    Asynchronous counters do not have major drawbacks and are suitable for use in high- and low-frequency counting applications
  • d)
    Asynchronous counters do not have propagation delays, which limits their use in high-frequency applications
Correct answer is option 'B'. Can you explain this answer?
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One of the major drawbacks to the use of asynchronous counters is that...
Introduction:
Asynchronous counters are a type of digital circuit that can count events or perform other operations based on clock signals. While they offer advantages such as simplicity and low power consumption, they also have some drawbacks that limit their use in certain applications.

Explanation:
The major drawback of using asynchronous counters is that high-frequency applications are limited because of internal propagation delays. Let's understand this in detail:

1. Asynchronous Counters:
- Asynchronous counters, also known as ripple counters, are made up of a series of flip-flops connected in a cascaded manner.
- Each flip-flop in the counter divides the frequency of the clock signal by 2.
- The output of one flip-flop serves as the clock input for the next flip-flop in the sequence, creating a ripple effect.
- As a result, the outputs of the flip-flops change sequentially, resulting in a binary count.

2. Propagation Delay:
- Propagation delay refers to the time it takes for a signal to travel through a digital circuit from input to output.
- In the case of asynchronous counters, the propagation delay is the time it takes for a change in the input signal to propagate through the flip-flops and reach the output.
- This delay is caused by the internal logic gates used in the flip-flops, which introduce a certain amount of delay.

3. High-Frequency Limitation:
- The internal propagation delays in asynchronous counters create a limitation for high-frequency applications.
- As the clock frequency increases, the propagation delay becomes more significant.
- At high frequencies, the output of each flip-flop may not have enough time to settle before the next clock pulse arrives.
- This can result in incorrect counting and unpredictable behavior of the counter.

Conclusion:
In conclusion, the major drawback of using asynchronous counters is the limitation they impose on high-frequency applications due to internal propagation delays. While they are suitable for low-frequency counting applications, their use becomes less reliable and predictable at higher frequencies.
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One of the major drawbacks to the use of asynchronous counters is that...
One of the major drawbacks to the use of asynchronous counters is that High-frequency applications are limited because of internal propagation delays. Propagation delay refers to the amount of time taken in producing an output when the input is altered.
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One of the major drawbacks to the use of asynchronous counters is that ____________a)Low-frequency applications are limited because of internal propagation delaysb)High-frequency applications are limited because of internal propagation delaysc)Asynchronous counters do not have major drawbacks and are suitable for use in high- and low-frequency counting applicationsd)Asynchronous counters do not have propagation delays, which limits their use in high-frequency applicationsCorrect answer is option 'B'. Can you explain this answer?
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