Inputs/Output

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Inputs

Output

CLRN

PRN

ENA

D

CLK

Q

L

H

X

X

X

L

H

L

X

X

X

H

L

L

X

X

X

L

H

H

L

X

X

Qo*

H

H

H

L



L

H

H

H

H



H

H

H

X

X

L

Qo

* Qo = level of Q before clock pulse

All flipflops are positive-edge-triggered.