单片机利用外部中断1实现计数（静态数码管显示）程序

ID:954170 · 发表于 2021-7-19 18:17

#include<reg51.h>
#define uchar unsigned char
#define uint unsigned int

char Duan_Code[]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,0x88,0x83,0xc6,0xa1,0x86,0x8e};
uchar Count=0;
void SEG7_Static_Display(uchar);
void Ex1_Initial(void);
void Display(void);
int main()
{
Ex1_Initial();
while(1)
{
Display();
}
}

void SEG7_Static_Display(uchar Num)
{
P0=Duan_Code[Num];
}

void Ex1_Initial(void)
{
IT1=1;
EA=1;
EX1=1;
}

void Display(void)
{
SEG7_Static_Display(Count);
if(Count==10)
{
Count=0;
}
}

void EX1_Int() interrupt 2
{
Count++;
}

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