URGENT! UP and DOWN counter using 74LS192 and 7447

Thread Starter

aqcua

Joined May 16, 2018
4
There are some instances that our circuit counted two times. for instace we pressed our button but it sometimes skip numbers, is there something im missing? btw i used push buttons that are NC for the counter and it is connected to the VCC(source).
 

WBahn

Joined Mar 31, 2012
26,300
What makes it urgent?

I'm assuming this is some kind of group project that is due soon?

Moved to Homework Help
 

WBahn

Joined Mar 31, 2012
26,300
Your problem is almost certainly a debouncing problem.

When you press a mechanical switch, unless it is specifically designed to be bounce-free, it will usually act as though it was pressed and released many times.

Look up switch debouncing. There are several ways to go about it.
 

Thread Starter

aqcua

Joined May 16, 2018
4
Your problem is almost certainly a debouncing problem.

When you press a mechanical switch, unless it is specifically designed to be bounce-free, it will usually act as though it was pressed and released many times.

Look up switch debouncing. There are several ways to go about it.
Okay thanks ill look into it
 

dl324

Joined Mar 30, 2015
11,886
There are some instances that our circuit counted two times. for instace we pressed our button but it sometimes skip numbers, is there something im missing?
When discussing circuits, it's helpful to post well drawn schematics so we can see what you did, or didn't do, to address switch bounce.
 
Top