Question

In a J-K flip-flop with falling clock, which of the following causes Q to change from 0 to 1?

		falling clock, J = K = 0
		falling clock, J = K = 1
		J = 0 and K = 1
		J= 1 and K = 0
		none of these

Answer 1

K Present state when, J=1, K=0, Oulputal irrespective of present state. J K flip Flop Truth Table J Q(t+1) = Next state 0 0 Q[U) 0 0 QCt) - Toggle When J-O, K=0 mode. Output remains same ie unchanged. When, J=0, K=1, Output = 0, irrespective of -0, irrespective of present state when, J=1, k=1, Output Toggles ie inversion of present stald - Characteristic Table of JK Flip flop Q(t+1) Q(U) к J *D 0 0 0 +1 0 0 0 0 0 0 0 0 ir Ź! 0 >ir - 0-70 CS Scanned with CamScanner

means at and also given, JK Flip flop with falling clock thal ow put changes only falling Clocks. This type of flip flop also negative edge Triggered trip flop known as I Q RETIK Қ ✓ and it unchanged on Output changes only on falling clock. and it rising clock. otol, for Q to change from Present state - (Qlt)) = 0 o fallig clock, J= K=0, Nezl state = 0 X @ falling clock, J=K=1, Next slate QCt+1) = QW) = Õ= from o to Ir. (2 Output changes not 13 J=0 and k=l, clock level either rising or falling given X. Because if it is rising clock Output remains same i.f0. 4 J= 1 and K=0, Clock level not mentioned x option (2) r CS Scanned with CamScanner
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