Inputs/Output

Inputs

Output

PRN

CLRN

CLK

J

K

Q

L

H

X

X

X

L

H

L

X

X

X

H

L

L

X

X

X

Illegal

H

H

L

X

X

Qo*

H

H

L

L

Qo

H

H

H

L

H

H

H

L

H

L

H

H

H

H

Toggle

* Qo = level of Q before clock pulse

All flipflops are positive-edge-triggered.