利用单片机设计实现一个60秒倒计时显示装置,并且计时到后发出报警...答:include<reg52.h>sbit bz=P3^1;unsigned char a[10]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xd8,0x80,0x90};unsigned char n,time=60;main(){P1=a[0];P2=a[6];TMOD=0X01;TH0=(65536-10000)/256;TL0=(65536-10000)%256;EA=1;ET0=1;TR0=1;while(1);}timer0() ...