logisim - 4-Bit ripple down counter using negative edge-triggered J-K flip flops - Electrical Engineering Stack Exchange
Synchronous Counter: Definition, Working, Truth Table & Design
Synchronous counter
Asynchronous Down Counter - GeeksforGeeks
Bidirectional Counter - Up Down Binary Counter
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
JK Flip Flop - Basic Online Digital Electronics Course
4 bits Synchronous Counter with J K Flip Flop - YouSpice
Digital Counters
Synchronous Counter and the 4-bit Synchronous Counter
Design a 4-bit down counter (decrement by 1) and analyze for the same metrics. Assume that no enable signal is used in this case. Assume the same delay characteristic equation and hold
Synchronous Counter and the 4-bit Synchronous Counter
4-bit Binary Up Counter JK Flip-Flop - Multisim Live
verilog - Synchronous Counter using JK flip-flop not behaves as expected - Stack Overflow
digital logic - Design a 3-Bit Up Synchronous Counter Using JK Flip Flop (odd vs even numbers) - Electrical Engineering Stack Exchange