To divide by an odd number‘ means not only the need for flip-flops, but some additional logic too. The configuration here shows how a digital signal can be divided by three using a 4018 and a gate of a 4081 IC. The output is not a perfect square wave. Combining this circuit with the previous one, a division by six can be done. Dividers are useful circuits in the design of clocks, instruments, and many other applications. The maximum input frequency depends on the power-supply voltage. Look in the site for more information about the characteristics of the 4018. The maximum input frequency is 9 MHz when the circuit is powered with 10 V.