Picture  above is Jason Reynolds and John McCormick. . John built an 8085 processor then he wired a miniature traffic light circuit by using red, yellow and green LED.  He drawn out an intersection on a wood box. The light had four outputs and the computer would control them depending on how many cars were at each intersection. He had a switch on the bottom of the box that acted like a detector that they have in the roads. It worked very well. They took it to Springfield to the capital building and show how they built all the stuff from scratch using the 8085 processor chip and the project went very well. He is doing great these days working for a big power plant in Illinois.