由51单片机控制的使用DS12C887实现的高精度时钟的带芯片初始化语句的C语言程序，初次使用芯片用这个，再次运行需要把初始化语句删掉，否则每次开机都会被初始化，导致时间无法被记录-Controlled by the use of 51 to achieve high-precision clock DS12C887 chip initialization statement with C language program, first use the chip with this, run again the need to delete the initialization statement, or each boot will be initialized , resulting in time can not be recorded