Thank you, its working.. Kind of... The signal of counter is too long comparing with push button.. When push button comes back to its original possition in this case open, signal of counter is still active and XOR creates double signal.. Instead of 9 (when counting down from 10) im getting 8.

Either you're generating two rising pulses, or you need to debounce the pushbutton... I'm not familiar with the sim software that you're using

 

Could you post an image of your latest design so I can take a look?

 

Could you post an image of your latest design so I can take a look?

It okay, i have done it i used AND gates and it works perfectly. Thank you for your time and help, you helped me a lot
Although talking about debounce. Its not really necessary for scheme to work, but i want to know about it more. I made debounce (or i think so that i did but i didnt include it to scheme) but that didnt change anything.

 

Although talking about debounce. Its not really necessary for scheme to work, but i want to know about it more.

I doubt your software is capable of simulating analog signals. But if you want to learn about debouncing a push button, I suggest you google it. It's not that complicated. The point is that you want to get rid of the voltage spikes that might be caused due to imperfections in the button's contacts and its mechanical motion, so as to avoid sending more than one signal to the circuit when you press it.

There are a few ways of debouncing a push button.

RC circuit:


Logic gates:



Or even software programmed in an MCU...

But remember that the most important part of your work is to always have fun with it

 

Hello. I have a problem here. The green hex doesn't work. I cant find a problem :/

 

Hello. I have a problem here. The green hex doesn't work. I cant find a problem :/View attachment 77090

The connections between the decoder and the driver seem garbled, also the counters don't seem properly cascaded. But the image you posted is not clear enough for me to see what's going on.

 

Hello. I have a problem here. The green hex doesn't work. I cant find a problem :/View attachment 77090

Please attach the clear breadboard or pcb and a clear circuit.