GATE EC 2023 Set 1 — Question 63
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Digital Circuits → Sequential Logic → Ripple & Synchronous Counters
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Question
In a given sequential circuit, initial states are and . For a clock frequency of , the frequency of signal in , is _ (rounded off to the nearest integer).
Correct answer
250 to 250
Solution
Read the connections from the figure:
The state repeats every 4 clock cycles (a 2-bit Johnson/twisted-ring counter), and is high for 2 cycles and low for 2 cycles. HenceAnswer: 250
- (the wire from back to ),
- .
| Clock | ||
|---|---|---|
| 0 | 1 | 0 |
| 1 | 0 | 0 |
| 2 | 0 | 1 |
| 3 | 1 | 1 |
| 4 | 1 | 0 |
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