Abstract
In recent years, with the rapid development of science and technology, SCM applications
are constantly go, at the same time drive the traditional control detection nissin month good
updates.Crossroads transports, bustling, bike lanes, pedestrian footbridge humanitarian, in an
orderly way. So what to do this in order? Rely on is the automatic mand system of traffic lights. A
lot of traffic signal lamp control way. This system adopts the MSC - 51 series microcontroller
ATSC51 and programmable parallel I/O interface chip 8255 a tao, a device for the center to
design a traffic light control can realize the according to actual traffic by 8051 chip P1 mouth set
function of red and green light burning time; Light traffic light cycle. The countdown with 5
seconds left yellow lights flashing warning; Vehicle running a red light alarm; Green time can
detect the number of cars and can through digital tube display. The system practical, simple
operation, strong extended functionality.
Key words:single chip microputer; The traffic light
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