Introduction - If you have any usage issues, please Google them yourself
The function of the program is to realize the software program design of the road traffic light control system. The two main roads between the East and the south are delivered to a crossroad, and the main roads have a set of red, yellow and green three colors. Implementation: normal mode: red, yellow, green, 3, 30 respectively display 30 seconds; master-slave mode: trunk road is a green light for 40 seconds, 3 seconds yellow light, red light 20 seconds from the road is a red light yellow light 40 seconds, 3 seconds, 20 seconds green; emergency mode: Four directions on the red light, stop the clock digital tube; buzzer alarm: when a road is a red light when the sensor detects a car rushed past, buzzer alarm. In the code, four LED digital tubes are used to express four directions in East, West, South and North. The upper and middle 3 sections of the digital tube represent three red yellow and green lights.