C51单片机的数码管显示问题答:include <REGX52.H> define uint unsigned int define uchar unsigned char uchar shi,ge,t,num,xms;sbit wela=P2^7;sbit dula=P2^6;sbit key1=P3^4;sbit key2=P3^5;sbit key3=P3^6;sbit key4=P3^7;uchar code table[]={ 0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x...