用AT89C51單片機控制兩位8段LED數碼管采用動態顯示的方式顯示出201211458

#include "reg51.h"

#define uchar unsigned char

uchar display_code[]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90};

uchar time[8]={2,0,1,2,1,1,4,5};

//uchar time[3]={0,0,0};

void delay(void)

{

uchar i;

for(i=250;i>0;i--);

}

void display()

{

P2=0x80;

P0=display_code[time[0]];

delay();

P2=0x00;

P2=0x40;

P0=display_code[time[1]];

delay();

P2=0x00;

P2=0x20;

P0=display_code[time[2]];

delay();

P2=0x00;

P2=0x10;

P0=display_code[time[3]];

delay();

P2=0x00;

P2=0x08;

P0=display_code[time[4]];

delay();

P2=0x00;

P2=0x04;

P0=display_code[time[5]];

delay();

P2=0x00;

P2=0x02;

P0=display_code[time[6]];

delay();

P2=0x00;

P2=0x01;

P0=display_code[time[7]];

delay();

P2=0x00;

}

void main(void)

{

uchar i;

while(1)

{

for(i=0;i<100;i++)

{

display();

}

}

}

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