同步和异步计数器之间的差异

根据应用的时钟脉冲，计数器有两种类型。这些计数器是：异步计数器和同步计数器。
在异步计数器也称为纹波计数器中，不同的触发器由不同的时钟触发，而不是同时触发。在Synchronous Counter 中，所有触发器都以相同的时钟同时触发，并且 Synchronous Counter 在操作中比异步计数器快。

让我们看看这两个计数器之间的区别：

S.NO	Synchronous Counter	Asynchronous Counter
1.	In synchronous counter, all flip flops are triggered with same clock simultaneously.	In asynchronous counter, different flip flops are triggered with different clock, not simultaneously.
2.	Synchronous Counter is faster than asynchronous counter in operation.	Asynchronous Counter is slower than synchronous counter in operation.
3.	Synchronous Counter does not produce any decoding errors.	Asynchronous Counter produces decoding error.
4.	Synchronous Counter is also called Parallel Counter.	Asynchronous Counter is also called Serial Counter.
5.	Synchronous Counter designing as well implementation are complex due to increasing the number of states.	Asynchronous Counter designing as well as implementation is very easy.
6.	Synchronous Counter will operate in any desired count sequence.	Asynchronous Counter will operate only in fixed count sequence (UP/DOWN).
7.	Synchronous Counter examples are: Ring counter, Johnson counter.	Asynchronous Counter examples are: Ripple UP counter, Ripple DOWN counter.
8.	In synchronous counter, propagation delay is less.	In asynchronous counter, there is high propagation delay.