Guys I need help building this on the breadboard. Could someone simulate this in fritzing and show it to me?
I’ve been struggling with this for 2 weeks and I am running out of patience. I cant get the light to shine using the 4 push buttons 
In order to put this on a breadboard, you need to select the necessary chips to implement the logic. In this case a 7404 hex inverter, a couple of 7411 triple and gates and a 4072 cmos 4 input or gate would do. I don’t know that Fritzing has all of these so you may need to create them out of the generic IC part (or find ones via a google search.)
Peter