Design of Traffic Light Control System Base on FPGA/CPLD and VHDL

The design method of traffic light control system by using Very-High-Speed Integrated Circuit Hardware Description Language(VHDL) is introduced,and the downloading of the controller design to the FPGA/CPLD chip in MAX+PLUS II is fulfilled. As FPGA/CPLD chips are based on large scale IC and there are no connection problems in the presented circuit,so the chips are re1iable and faults are less prone to happen,which shows the advantages of the EDA technology in digital circuits design.