GATE Exam > GATE Questions > Ring shift and Johnson counters are _________...
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Ring shift and Johnson counters are ____________
- a)Synchronous counters
- b)Asynchronous counters
- c)True binary counters
- d)Synchronous and true binary counters
Correct answer is option 'A'. Can you explain this answer?
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Most Upvoted Answer
Ring shift and Johnson counters are ____________a)Synchronous counters...
Synchronous Counters:
- Ring shift and Johnson counters are examples of synchronous counters.
- In synchronous counters, all flip-flops change state simultaneously in response to a common clock signal.
- This ensures that the outputs of the flip-flops are stable and synchronized, making them suitable for high-speed applications.
Asynchronous Counters:
- Asynchronous counters, on the other hand, do not use a common clock signal to trigger state changes.
- Each flip-flop in an asynchronous counter changes state based on the output of the previous flip-flop.
- This can lead to timing issues and glitches in the output, especially at high clock speeds.
True Binary Counters:
- True binary counters use binary encoding to represent the count value.
- Each flip-flop in a true binary counter represents a single bit, with the count progressing in binary sequence (000, 001, 010, 011, etc.).
- This is in contrast to other counter types like Gray code counters which use a different encoding scheme.
Conclusion:
- Ring shift and Johnson counters are both examples of synchronous counters which change state simultaneously in response to a common clock signal.
- They are not asynchronous counters, as they do not rely on individual flip-flop outputs to trigger state changes.
- While they can be true binary counters, this is not the defining characteristic that sets them apart from other counter types.
- Ring shift and Johnson counters are examples of synchronous counters.
- In synchronous counters, all flip-flops change state simultaneously in response to a common clock signal.
- This ensures that the outputs of the flip-flops are stable and synchronized, making them suitable for high-speed applications.
Asynchronous Counters:
- Asynchronous counters, on the other hand, do not use a common clock signal to trigger state changes.
- Each flip-flop in an asynchronous counter changes state based on the output of the previous flip-flop.
- This can lead to timing issues and glitches in the output, especially at high clock speeds.
True Binary Counters:
- True binary counters use binary encoding to represent the count value.
- Each flip-flop in a true binary counter represents a single bit, with the count progressing in binary sequence (000, 001, 010, 011, etc.).
- This is in contrast to other counter types like Gray code counters which use a different encoding scheme.
Conclusion:
- Ring shift and Johnson counters are both examples of synchronous counters which change state simultaneously in response to a common clock signal.
- They are not asynchronous counters, as they do not rely on individual flip-flop outputs to trigger state changes.
- While they can be true binary counters, this is not the defining characteristic that sets them apart from other counter types.
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Community Answer
Ring shift and Johnson counters are ____________a)Synchronous counters...
Synchronous counters are the counters being triggered in the presence of a clock pulse. Since all of the clock inputs are connected through a single clock pulse in ring shift and johnson counters. So, both are synchronous counters.
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Ring shift and Johnson counters are ____________a)Synchronous countersb)Asynchronous countersc)True binary countersd)Synchronous and true binary countersCorrect answer is option 'A'. Can you explain this answer?
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