Solved] Use D flip-flops to design a synchronous modulo-15 counter. Assume T (Toggle) flip-flops instead of D flip flops. | Course Hero
How to design a counter with the following binary sequence of 1, 3, 5, 7, 9, 11, 13, 15 and repeat (use D flip flop) - Quora
How to design a synchronous counter using D-type flip-flops for getting the following sequence, 0-3-6-9-12-15-0 - Quora
![4-Bit ripple down counter using negative edge-triggered J-K flip flops - Electrical Engineering Stack Exchange 4-Bit ripple down counter using negative edge-triggered J-K flip flops - Electrical Engineering Stack Exchange](https://i.stack.imgur.com/02YCm.png)