qq.c

各种基本的小程序,用到了实验板中的各个功能,很有用哦!

#include<AT89x51.H>
unsigned char code dispcode[]={
0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80
};
unsigned char temp;
void delay(void)
{
unsigned char i,j,k;
for(i=0;i<20;i++)
for(j=0;j<100;j++)
for(k=0;k<248;k++);
}
main()
{
P0=0xf7;
P2=dispcode[temp];
delay();
temp++;
P0=0xd7;
P2=dispcode[temp];
delay();
temp++;
P0=0xc7;
P2=dispcode[temp];
delay();
temp++;
P0=0x87;
P2=dispcode[temp];
delay();
temp++;
P0=0xf7;
P2=dispcode[temp];
delay();
temp++;
P0=0xd7;
P2=dispcode[temp];
delay();
temp++;
P0=0xc7;
P2=dispcode[temp];
delay();
temp++;
P0=0x87;
P2=dispcode[temp];
delay();
temp++;
}