#include <reg51.h>
sbit dula=P2^6; //段選信號的鎖存器控制
sbit wela=P2^7; //位選信號的鎖存器控制
unsigned char code table[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,
0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71};
//0-F的碼表
void delay(unsigned int i)
{
unsigned int m,n;
for(m=i;m>0;m--)
for(n=90;n>0;n--);
}
void main()
{
unsigned char num;
while(1)
{
for(num=0;num<16;num++)
{
P0=table[num];
dula=1;
dula=0;
P0=0xfe; //選中第一個數(shù)碼管
wela=1;
wela=0;
delay(1000);
}
}
}
|
