论简易数字时钟设计

Simple Digital Clock Design

利用单片机AT89S52控制日历时钟芯片DS12C887实现多功能数字时钟。该时钟由单片机控制日历时钟芯片实现年份、月份、日期、星期、时间信息的获取,并且通过LCD1602对信息进行显示和修改,具有掉电后时间信息不丢失的功能;同时具有闹钟功能和具有整点报时功能;通过程序固化到单片机中,设有程序下载口,可以方便对程序进行升级。

We regulate the chip of the calendar clock with the serial number of DS12C887 by utilizing the SCM, which is the abbrevi-ation for the Single Chip Micyoco, in order to fulfill the working of the muhifunctional digital clock. The regulation of the calendar clock chip of this type of the clock, which caused by SCM, lead to the acquirement of years, months, weeks, dates and time information. Then, the information will be revealed and changed through the LCD 1602, thus, whenever the clock was power-off, the time information will not be lost. Meanwhile, the dock would acquire both the alarm clock function and the timekeeping function. The clock has the program down-load port in order to achieve the convenience for the upgrading of the programs.