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#define uint unsigned int
#define uchar unsigned char
uchar code num[]={0XC0,0XF9,0XA4,0XB0,0X99,
0X92,0X82,0XF8,0X80,0X90};
sbit p20=P2^0;
sbit p21=P2^1;
sbit p22=P2^2;
sbit p23=P2^3;
void delay(uint z)
{
while(z--);
}
void disp(uchar a,b,c,d)
{
P2=0x00;
p20=1;
P0=num[a];
delay(500);
p20=0;
p21=1;
P0=num[b];
delay(500);
p21=0;
p22=1;
P0=num[c];
delay(500);
p22=0;
p23=1;
P0=num[d];
delay(500);
p23=0;
}//以上程序可定义成7seg.h头文件，需要时直接加载，具体格式为：#include"7seg.h"
void main()
{
while(1)
{
disp(2,0,1,5);
}
}
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