bcdledc51.c

来自「单片机的仿真实例!用的是Proteus作的,大家有需要的尽管下吧」· C语言 代码 · 共 60 行

#include <reg51.h>
#include <stdio.h>

#define DELAYTIME   65000 //定义延迟时间常数
unsigned int temp1;

void delay(unsigned int temp)//延时程序
{
  while(--temp);
}

void main()
{

        P2=0; //led is off
        while(1)
		{
			P2=0X01;//显示0,P2口输出其BCD码和扫描码P2.0
			temp1=DELAYTIME;
			delay(temp1);

			P2=0X12;//显示1,P2口输出其BCD码和扫描码P2.1
			temp1=DELAYTIME;
			delay(temp1);

			P2=0X24;//显示2,P2口输出其BCD码和扫描码P2.2
			temp1=DELAYTIME;
			delay(temp1);

			P2=0X38;//显示3,P2口输出其BCD码和扫描码P2.3
			temp1=DELAYTIME;
			delay(temp1);

			P2=0X41;//显示4,P2口输出其BCD码和扫描码P2.0
			temp1=DELAYTIME;
			delay(temp1);

			P2=0X52;//显示5,P2口输出其BCD码和扫描码P2.1
			temp1=DELAYTIME;
			delay(temp1);

			P2=0X64;//显示6,P2口输出其BCD码和扫描码P2.2
			temp1=DELAYTIME;
			delay(temp1);

			P2=0X78;//显示7,P2口输出其BCD码和扫描码P2.3
			temp1=DELAYTIME;
			delay(temp1);

			P2=0X81;//显示8,P2口输出其BCD码和扫描码P2.0
			temp1=DELAYTIME;
			delay(temp1);

			P2=0X92;//显示9,P2口输出其BCD码和扫描码P2.1
			temp1=DELAYTIME;
			delay(temp1);
			temp1=DELAYTIME;
			delay(temp1);		
		}
}