抢答器程序

void main() { TMOD = 0x01; EA = 1; ET0 = 1; TH0 =(65536-9216)/256; TH0 =(65536-9216)/256; while(1) { keying(); if(r == 0) { display(10); } if(d == 5) { TR0 = 1; //开启计时 display(a); r = 1; i = 1; } if(a >= 0 && a