main.c

用于单片机实验系统的60S定时器的完整的C语言源代码

#include <reg52.h>

//0~9对应的段码
unsigned char code dispcode[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f};

void display(int a)
{
	int b,c,d,j;
	b = a/10;
	c = a%10;
	for(j = 0;j<251; j++)
	{
		
		P2 = 0x01;
		//报警
		if(a >= 55)
			P2 = P2|0x80;
		P1 = dispcode[c];
		for(d=0;d<245;d++);
		P2 = 0x02;
		//报警
		if(a >= 55)
			P2 = P2|0x80;
		P1 = dispcode[b];
		for(d=0;d<245;d++);
	}
}

void main()
{
	
	int i;
	for(i = 0; i < 60; i++)
	{
		display(i);
		
	}

}