基于日历时钟12c887的自动结帐系统，-Based on the calendar clock 12c887 automated checkout system,

此代码是对时钟芯片12c887的全部功能的编程，通过液晶显示，按键调节时间。时间精确。-This code is the full functionality of the clock chip 12c887 programming, through the liquid crystal display, key adjustment time. Time-accurate.

自己编写的12C887程序，可以直接移植，测试成功。-I have written 18B20 procedure, can be directly transplanted, the test was successful.