文件名称:traficlight
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东西南北四个方向各有一组红绿黄指示灯和两个数码管,东西方向和南北方向交替允许通道,当西南方向允许通行亮绿灯时,南北方向亮红灯,当南北方向允许通行亮绿灯时,东西方向亮红灯,放行时间都是40秒,在每次由绿灯变为红灯时,要闪烁5秒钟黄灯作为过渡,在设置一按钮按下改按钮后,东西南北四个方向均亮红灯,数码管显示0,再按一次该按钮交通灯正常工作。-Each of the four north-south direction of things a group of yellow red and green LED indicator light and two east-west direction and north-south direction of the turn to allow access, when the south-west passage to allow a green light, the north-south direction of red, when the prevailing north-south direction to allow a green light when the red east-west direction, release time is 40 seconds, each time from when the red light into green light to yellow light flashes 5 seconds as a transitional, in the settings by pressing a button to button, the four north-south east-west the direction of both the red, digital display 0, and then once the button traffic lights work properly.
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traficlight.doc
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