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
The 4-bit series binary counter using JK-flip-flops. | Download Scientific Diagram
Binary Counter
Synchronous Counter: Definition, Working, Truth Table & Design
4-bit Binary Up Counter JK Flip-Flop - Multisim Live