Question about counter (disconnecting clock)

[Haytham-Sief]

Question about counters

Plzz everybody if any one can tell me if the clock provided to a counter is disconnected what will be the output of the counter ? Will it be the last output (i.e. latched) or it will be reseted ??
Thnx very much

 

[omid219]

Re: Question about counters

Ofcourse, it depends to the freezing time of the clock, if it happens in low to high or high to low transition edge, the value could be unknown, but if the clock is freezed during high or low level, the counter keeps its value.

Regards

 

[fuzzy]

Re: Question about counters

If you use cmos type ic.Must be pull down res. for clock input.If you dont have counter not exactly last count state.

 

[Haytham-Sief]

Re: Question about counters

Thnx alot but plzz I need more explaination.

 

[flatulent]

Re: Question about counters

The counter will hold the last count. If the input waveform stays low or high the counter will not increment the count. The thing to look out for is how you disrupt the input signal. If the counter input is left floating, noise will produce more counts.