ABSTRACT
Years with the rapid development of science and technology.SCM application
are deepening at the same time promote more traditional control detection update. In
real-time detection and control of the microcomputer application system , the
microcontroller is often used as a core component, only the SCM knowledge is
inadequate and should be based on specific hardware architecture hardware and
software to be improved.
Many ways to control traffic lights. A good controllable traffic light system
can be a technological innovation of road congestion, illegal control and other issues
In this system , MCS-51 series MCU AT89S51 and programmable parallel I/O
interface chip 89s51-centered design of traffic signal controller device to realize the
actual traffic volume by 89S51 according to the P1 port chip set of red ,green time
kindle function : traffic light cycle of light ,yellow light flashes when the countdown 5
seconds left warning.The system practical ,simple ,powerful extensions.
Keywords: traffic light MCS-51 SCM