单片机汇编语言,用的芯片是c51,编程实现9-0的倒计时,插线最好也说一下...答:include<reg51.h> define uchar unsigned char uchar tab[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x00}; //0到9 uchar cnt=0,dat=9;void t0isr() interrupt 1 { TH0=(65536-50000)/256;TL0=(65536-50000)%256;cnt++;if(cnt>=20){ cnt=0;dat--;P1=tab[...