ff1.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};
unsigned char i,j;
void delay(void)
{
for(i=0;i<2;i++)
for(j=0;j<248;j++);
}
main()
{
while(1)
{
P0=0xf7;
P2=dispcode[0];
delay();
P0=0xdf;
P2=dispcode[1];
delay();
P0=0xef;
P2=dispcode[2];
delay();
P0=0xbf;
P2=dispcode[3];
delay();
}
}