C51单片机,控制数码管每隔3秒,循环数字1234,5678,9876,1368答:用四位一体的共阴数码管,用定时器T0定时,实现3秒切换显示四组数字。仿真实现,仿真图如下 include <reg51.h> define uchar unsigned char define uint unsigned int uchar code tab[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f};//共阴段码 uchar code disb[]={0xfe,0x...