AT89C51单片机实现4位数码管显示学号后四位,谢谢答:define uchar unsigned char define uint unsigned int //共阴数码管七段码 uchar code table[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d, 0x07,0x7f,0x6f,0x77};uchar code table2[]={5,4,3,2};//这就是学号的后4位,自行修改 void display()//4位显示子程序 { P0=~(table[ tabl...