可以實現(xiàn)0~20計數(shù)功能顯示
#include<reg51.h>
#define LED_SEGMENT P0
sbit led1 = P2^0;
sbit led0 = P2^1;
#define ON 1
#define OFF 0
unsigned char code display_code[10]={0XC0,0XF9,0XA4,0XB0,0X99,0X92,0X82,0XF8,0X80,0X90};
unsigned char code display_position[4]={0X01,0X02,0X04,0X08};
unsigned char display_buff[4];
unsigned int counter;
void delay_ms(unsigned int ms)
{
unsigned char k;
while(ms--)
{
for(k=0;k<123;k++);
}
}
void display_process()
{
display_buff[0]=counter/10;
display_buff[1]=counter%10;
}
void LED_display()
{
LED_SEGMENT=display_code[display_buff[0]];
led1 = 1;
delay_ms(2);
led1 = 0;
LED_SEGMENT=display_code[display_buff[1]];
led0 = 1;
delay_ms(2);
led0 = 0;
}
void int0_counter()interrupt 0 using 1
{
counter++;
if(counter==21)
counter=0;
}
void main()
{
P3=0XFF;
counter=0;
EX0=1;
IT0=1;
EA=1;
while(1)
{
display_process();
LED_display();
}
}
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