广告灯（利用取表方式）.c

来自「利用取表的方法」· C语言 代码 · 共 75 行

#include <REG51.H> 

unsigned char code table[]={
0xfe,0xfd,0xfb,0xf7,

0xef,0xdf,0xbf,0x7f, 

0xfe,0xfd,0xfb,0xf7, 

0xef,0xdf,0xbf,0x7f, 

0x7f,0xbf,0xdf,0xef, 

0xf7,0xfb,0xfd,0xfe, 

0x7f,0xbf,0xdf,0xef, 

0xf7,0xfb,0xfd,0xfe, 

0x00,0xff,0x00,0xff, 

0x01}; 

unsigned char i; 

void delay(void) 

{ 

unsigned char m,n,s; 

for(m=20;m>0;m--) 

for(n=20;n>0;n--) 

for(s=248;s>0;s--); 

} 

void main(void) 

{ 

P1=0x06;

while(1) 

{ 

if(table[i]!=0x01) 

{ 

P0=table[i]; 

i++; 

delay(); 

} 

else 

{ 

i=0; 

}

} 

}