Introduction - If you have any usage issues, please Google them yourself
The system consists of single-chip system, LED display, traffic light demonstration system. As the center of the device to the microcontroller 8051 to design traffic signal controller, to achieve a circulation through the P2 port so that traffic lights light up, the countdown 5 seconds left flashing yellow warning, by P3 the mouth tube in the LED digital display shows the countdown, the system reliability easy to operate.