The subsequent problems deal with the circuit below where the preset and clear features operate based on positive logic (i.e., they are "active high"), which is not the standard convention.
Note: Each question is independent and doesn't depend on results from previous questions. The only values known initially are the values provided in each question.If L=0 and R=0, then after two full pulses of C (i.e., C = 0,1,0,1,0) the output X
A. remains unchanged from its initial value before the two pulses (regardless of whether the initial value is 0 or 1)
B. toggles regardless of its value
C. becomes (or remains) 0
D. is uncertain
E. becomes (or remains) 1
Answer: E
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