改程序为基于STC单片机的实时时钟芯片8563在液晶屏上显示实时时钟的程序。 单片机型号为：STC89C52RC 用的是1602字符液晶-Changed the procedures for SCM STC based on real-time clock chip 8563 in the LCD screen to display real-time clock procedures. Single-chip model: STC89C52RC using 1602 characters