How to design a synchronous counter 4 bit using JK flip flop that can count up even numbers from 0 to 14, and count down odd numbers from 15 to 0 in 1 system - Quora
4 bits Synchronous Counter with J K Flip Flop - YouSpice
Exp 7: 4 bit asynchronous down counter using JK flip flops | Tinkercad
Synchronous counter
Counters | CircuitVerse
4-bit down binary counter Using Proteus, design an | Chegg.com
Synchronous Counter and the 4-bit Synchronous Counter