(In the picture, an "i" at the end of a letter is used to show it is to be inverted. I don't know how to type characters with lines over them in Google Sheets so I just did this)
So I am trying to create a simplified equation using the sum of products method for a circuit that has 4 inputs and 1 ouput, where the output turns off when 2 or more of the 4 inputs are on. Only one problem, I am having trouble simplifying it as I either can't get very far or when I do successfully simplify it by a lot, the equation doesn't actually work as intended. So I was just wondering if you all could help me out to simplify it, or if it is even possible to simplify all that much.
Thanks in advance for anybody that can help me with this!