/*
用来实现 数码管 段选与位选
*/
#include <reg52.h>
typedef unsigned char uchar;
typedef unsigned int uint;
sbit dula=P2^6;
sbit wela=P2^7;
uchar code table[]={
0x3f,0x06,0x5b,0x4f,
0x66,0x6d,0x7d,0x07,
0x7f,0x6f,0x77,0x7c,
0x39,0x5e,0x79,0x71};
uchar code tablewe[]={
0xfe,0xfd,0xfb,0xf7,0xef,0xdf};
void delay(uint z)
{
uint x,y;
for(x=z;x>0;x--)
for(y=110;y>0;y--);
}
void display(uchar bai,uchar shi,uchar ge)
{
dula=1;
P0=table[bai];
dula=0;
P0=0xff;
wela=1;
P0=tablewe[3];
wela=0;
delay(1);
dula=1;
P0=table[shi];
dula=0;
P0=0xff;
wela=1;
P0=tablewe[4];;
wela=0;
delay(1);
dula=1;
P0=table[ge];
dula=0;
P0=0xff;
wela=1;
P0=tablewe[5];;
wela=0;
delay(1);
}
void main (){
while(1){
display(2,3,5);
}
}