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1、基于51单片机共阴两位数码管显示倒计时#includeunsigned char s=0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f;unsigned char count,d1,d2,g,y;signed int time=10; void delay(unsigned char i);void sm()d1=time/10;d2=time%10;P1=sd1;P3=0x00;delay(2);P3=0x01;P1=sd2;delay(2);void main()TMOD=0x01;TH0=0x3c;TL0=0xb0;EA=1;ET0=1;TR0=1; while(1)sm();void int1()interrupt 1count+;if(count=20)count=0;time-;if(time=-1) time=g;g=3;y+; if(y=2)y=0;g=10;void delay(unsigned char i )unsigned char j,k;for (k=0;ki;k+)for (j=0;j10;j+);。