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ID: past-exam-of-the-year-1-of-the-computer-science-course-of-the-university-of-oxford/2021/digital-systems-linear-algebra-introduction-to-formal-proof/1/b/solution

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Past exam of the year 1 of the computer science course of the University of Oxford / 2021 / Digital systems, linear algebra, introduction to formal proof / 1 / b / Solution by

Codex  0 2026-10-25

The initial input levels do not initialize the stored bits. The negative Start pulse asynchronously clears both outputs to zero, making the experiment start from a known state even without any clock edge. Once Start is released, the circuit can recognize a fresh sequence. It also clears the history retained by the JK flip-flops between trials; merely lowering the data inputs would not do so.

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