JK Flip-Flops (continued)
By plotting the next state Q* on a K-map, as shown in Fig 6.25c, the characteristic equation of the JK flip-flop can be derived: Q* = KQ + JQ
From this equation, the logic diagram for the flip-flop can be derived as presented in Fig. 6.26a.
The logic symbol for this device is shown in Fig. 6.26 b. Note that the clock input signal is inverted within the device itself so that the slave will change on the falling edge of the clock.