![digital logic - Why does a 4-bit asynchronous counter need exactly 4 flip- flops? - Electrical Engineering Stack Exchange digital logic - Why does a 4-bit asynchronous counter need exactly 4 flip- flops? - Electrical Engineering Stack Exchange](https://i.stack.imgur.com/BVibL.jpg)
digital logic - Why does a 4-bit asynchronous counter need exactly 4 flip- flops? - Electrical Engineering Stack Exchange
![flipflop - Designing a special 4-bit counter with flip flops - Electrical Engineering Stack Exchange flipflop - Designing a special 4-bit counter with flip flops - Electrical Engineering Stack Exchange](https://i.stack.imgur.com/IRaEV.png)
flipflop - Designing a special 4-bit counter with flip flops - Electrical Engineering Stack Exchange
![4-bit Mod-12 Synchronous Counter using D flip-flop || Sequential Logic Circuit | Digital Electronics - YouTube 4-bit Mod-12 Synchronous Counter using D flip-flop || Sequential Logic Circuit | Digital Electronics - YouTube](https://i.ytimg.com/vi/0jxvgMORUCE/hqdefault.jpg)
4-bit Mod-12 Synchronous Counter using D flip-flop || Sequential Logic Circuit | Digital Electronics - YouTube
![flipflop - How do I build a 4-bit synchronous direct counter using only D Flip-Flops? - Electrical Engineering Stack Exchange flipflop - How do I build a 4-bit synchronous direct counter using only D Flip-Flops? - Electrical Engineering Stack Exchange](https://i.stack.imgur.com/fCzlY.jpg)