Synchronous Counter and the 4-bit Synchronous Counter
3 bit & 4 bit Asynchronous Down Counter - YouTube
Design BCD (MOD-10) Ripple Counter using JK Flip-Flop || Sequential Logic Circuits - YouTube
How to design an asynchronous counter using JK flip for getting the following sequence 0-2-4-7-9-0 - Quora
Digital Counters
4-bit Binary Down Counter JK Flip-Flop - Multisim Live
Asynchronous Counters - InstrumentationTools
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