Apply the waveforms of Figure 5-90 to the FF of Figure 5-20 and determine the waveform at

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Apply the waveforms of Figure 5-90 to the FF of Figure 5-20 and determine the waveform at Q. Repeat for the FF of Figure 5-21. Assume Q = 0 initially.


Figure 5-90

S R CLK JL


Figure 5-20

FF triggers on positive transition S R CLK O 1 0 0 1 0 0 (a) S CLK R No change O 10 Set Reset (c) S 010


Figure 5-21

0 Triggers on negative edge S CLK R Q  Inputs SR CLK  00 10 01 11 J Output Q Qo (no change) 1 0 Ambiguous

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Digital Systems Principles And Application

ISBN: 9780134220130

12th Edition

Authors: Ronald Tocci, Neal Widmer, Gregory Moss

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