单片机时钟设计,定时器T0、T1溢出周期为50MS，T0为秒计数用， T1为调整时闪烁用， P3.7为调整按钮，P1口 为字符输出口，采用共阳显示管。 -Single-chip clock design, timers T0, T1 overflow cycle 50MS, T0 used for counting seconds, T1 to adjust when the flashes used, P3.7 to adjust button, P1 port output for