基于实时钟芯片的电子万年历的设计

Design of the Electronic Perpetual Calendar based on real-time clock chip

电子万年历以AT89S52单片机为控制核心,采用Dallas公司的DS12C887A实时钟芯片构成计时电路,实现了时间和日期的显示,还增加了温度显示和整点报时的功能。文章对该系统的硬件电路、工作原理做了详细介绍,同时给出了软件设计的流程图及主要程序源代码。

This Electronic calendar uses the AT89S52 microcontroller as the core for the control. Time Circuit which is constituted by Dallas＇s DSI2C887A real-time clock chip achieved a time and date display, it increased functionality for the temperature display and the whole point timekeeping. This paper discusses the hardware circuit of the system, principle in detail, and gives the flow chart of the software design and the major source code.