Figure 5-33(a) shows the symbol for a J-K FF that responds to a NGT on its clock

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Figure 5-33(a) shows the symbol for a J-K FF that responds to a NGT on its clock input and has active-LOW asynchronous inputs. The external active- LOW asynchronous inputs are labeled PRE and CLR. The bubble on an input means that the input responds to a logic LOW signal. The J and K inputs are shown tied HIGH for this example. Determine the Q output in response to the input waveforms shown in Figure 5-33(a). Assume that Q is initially HIGH.


Figure 5-33(a)

CLK +5 V J PRE K PRE CLK CLR CLR O 10  9 CLK PRE CLR Q 1 0 1 0 1 0 1 0 (a) 1  PIL e f 9

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Digital Systems Principles And Application

ISBN: 9780134220130

12th Edition

Authors: Ronald Tocci, Neal Widmer, Gregory Moss

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