Introduction - If you have any usage issues, please Google them yourself
Experimental reports of traffic light controller to design a course--- SOC. Experimental features of the traffic signal controller, to complete the following functions: ⒈ show traffic lights red, yellow and green with the instructions of the state of L1, L2, L3, as green, yellow, red ⒉ countdown to achieve normal function: to use M2 , M1 north-south direction, as the countdown display, showed a red light 55 seconds, 30 seconds the green light, yellow light 15 seconds. ⒊ to achieve the special status of function (1) post-S1, to achieve the special status of function