Hi, friends!
I am implementing a project about traffic light. This is the first time I design a system, so i don't know what i have to do. Can you post a block diagram and a printed board for me to make reference? Thanks a lot!

 

This sounds like an assignment, so I will move it.

I doubt if we have something off the shelf to put out. How about you give us the complete requirement? What is it that you are supposed to design? Why not give your own block diagram a shot?