Introduction - If you have any usage issues, please Google them yourself
The system uses MSC-51 Series Microcontroller ATSC51 and programmable parallel I/O interface chip 8255A-centric devices to design traffic signal controller based on the actual traffic flow can be achieved through the P1 port 8051 chip set of red, green, gave the time of function traffic light cycle of light, the countdown 5 seconds left when the yellow light flashing warning (traffic light signal through the PA port output, display time directly through the 8255 output of the PC port to double-digit nixie tube) of vehicles running red lights warning green time can detect vehicles flow can be through a double-digit LED display. The system practical, simple, extending strong function.