那位高手帮我看看这个5分钟倒计时程序,我想让这个程序在剩余30秒蜂鸣...答:unsigned char a[]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,0x88,0x83,0xc6,0x86,0x8e,0x82,0xff};//定时初值计算方法:以5ms为例,5ms=5000us,0xffff-5000/1.085即为TH和TL的值 void int1() interrupt 3 //T1中断,时间是5ms { unsigned char d1,d2,d3,d...