Introduction - If you have any usage issues, please Google them yourself
The traffic lights to AT89S51 microcontroller as the core, can be programmed to achieve the eight light-emitting diode in accordance with the mode of traffic lights by identifying the key, you can change the red, yellow waiting time and work patterns time production time through the timer 0 Mode 1 is implemented to ensure accurate timing. Direct simulation of the system through the intersection traffic lights, the initial set to green light 15s, then yellow light 5s, then start the conversion Drive. At a red light waiting time, waiting time by digital display. To yellow, the yellow light will flash to remind people to be converted Drive. Changes need to be adjusted when the traffic time, you can key in 3 keys plus or minus 2 months time, while changing the time after the 4-digit LED display in binary mode. When there is an emergency situation, through the first three buttons select the emergency mode, then the driveway are red, LED display 0. The system can be applied to the model th