//範例 6-4C: 建表法的輸出入控制
//檔名:ch6_4.C

#include <reg51.h>

void main()
{
    char TBL_IN []={0x00,0x01,0x02,0x4,0x8,0x10,0x20,0x40,0x80};
    char TBL_OUT[]={0x00,0x81,0xc3,0xE7,0xFF,0x7E,0x3C,0x18,0xAA};
    
    P0=0;                   // 輸出埠的初始值
    while(1){
	int i;

	for(i=0;i<9;i++) {
		if(~P1== TBL_IN [i])
	           P0= TBL_OUT [i];
	} // end for  
    } // end while
} // end main