These 8 Levers Represent the 8 sides of the Game Of Life.
Just a recap of the Game Of Life:
4+sides on = dead
3 sides on = alive
2 = nothing changes
1/0 = dead
Using AND Gates, these 8 input link to make 1 output (dead or alive). This mechanism checks if there are 8 neighbors.
If there are 8 neighbors, deactivate the other sensors which check if there are 7,6,5,4,3,2,1 or 0 neighbors. Else, allow the current to continue to flow.