用单片机实现的交通灯设计

//east red leds on // 符合实际交通 // RED_B=0;

YELLOW_B=1;

GREEN_B=1;

}

//east and west 7segments control function void East_West_7seg()

{

S1=0;

S2=0;

S3=0;

S4=0;

if(second_counts>0)

{

S1=1;

S2=0;

P1=seg7[second_counts/10];

Delay(2);

S1=0;

S2=1;

P1=seg7[second_counts%10];