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.