...编写C51语言程序 利用单片机的外部中断0(P3.2)功能实现当按下_百...答:0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71,0x00};uchar flag;sbit key=P3^2;void ext0() interrupt 0 { flag=1;} main(){ IT0=1;EA=1;EX0=1;P1=distab[0];while(1){ if(flag==1)P1=distab[8];while(!key);flag=0;P1=distab[0];} } ...