单片机的四位显示及时间.单片机上电复位后,等待按键4启动定时器0

再次按键4,定时器0停止计数,进入时分初值设置状态,每按一次1键,时加一,每按一次2键,分加一 -SCM four shows and time. SCM power-on reset, waiting for the start timer button 4 0 4 button again, stop the timer 0 count, hours into the initial settings, every time a key, when an increase every time two keys, plus a sub -