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#include<reg51.h>
#define uchar unsigned char
#define uint unsigned int
sbit P2_2=P2^2;
sbit P2_3=P2^3;
sbit P2_4=P2^4;
typedef unsigned char u8;
typedef unsigned int u16;
u8 code wel[10]={0x06,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,};
void display(unsigned long);
void delay(uint);
void main(void)
{
display(12345678); /*輸入8位數(shù)*/
}
void display(unsigned long x)
{
uint i;
for(i=0;i<8;i++)
{
switch(i)
{
case 0: P2_2=0;P2_3=0;P2_4=0;P0=wel[x%10]; break;
case 1: P2_2=1;P2_3=0;P2_4=0;P0=wel[(x/10)%10]; break;
case 2: P2_2=0;P2_3=1;P2_4=0;P0=wel[(x/100)%10]; break;
case 3: P2_2=1;P2_3=1;P2_4=0;P0=wel[(x/1000)%10]; break;
case 4: P2_2=0;P2_3=0;P2_4=1;P0=wel[(x/10000)%10]; break;
case 5: P2_2=1;P2_3=0;P2_4=1;P0=wel[(x/100000)%10]; break;
case 6: P2_2=0;P2_3=1;P2_4=1;P0=wel[(x/1000000)%10]; break;
case 7: P2_2=1;P2_3=1;P2_4=1;P0=wel[(x/10000000)]; break;
}
delay(50000);
}
}
void delay(uint y)
{
while(y--);
}
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