Question

Question 39 (10 points) 1--JQ J G #2 #1 Clock Exhibit 35 A pair of J-K flip-flops Two J-K flip-flops are cross-coupled as in Exhibit 35. Assume the number 1 f-f has 1's sitting on J and K. What is the output of the AND gate after the second clock pulse arrives? (You may assume that all Q's are O before the first clock pulse arrives.) Cannot tell since the two f-f are cross-coupled. 0 Cannot tell since the first f-f always has 1's on the J and K inputs.

Answer 1

丁 tfl 0 ONo change Reset Set ToAa le vo car 0 0 6 Reset Tuhal an ano and hrst clock pulie J- KF e mode is ackva Now J2--0 and k is achvalkd)

Now when Se uen clock pn ve Now T A 2 ginu Л., and K2-0 nen u See mode is on and 82- I b fur Seuord clock pulo Output = 1 on

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