Synchronous Counter: Definition, Working, Truth Table & Design
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
Synchronous counters
Synchronous Counter - VLSI Verify
Synchronous Counter: Circuit, Types, and How it Works - JOTRIN ELECTRONICS
Mod 8 Synchronous Counter using JK Flip-Flop - Multisim Live