基于EDA威廉希尔官方网站 的数字钟设计方案

　　为使数字钟从电路设计、性能分析到设计出PCB版(即印制电路版)图的整个过程能够在计算机上自动处理完成，从而缩短设计周期、提高设计效率、减小设计风险。本系统基于EDA威廉希尔官方网站 的设计方法，提出一种采用P-MOS大规模集成电路LM8560作为计数译码的石英数字钟的设计方案，在Protel99SE软件平台下创建原理图和绘制印制电路版，实现了基本计时显示和设置、调整时间和闹钟等功能，最后组装出一个完整的数字钟。

　　Abstract:

　　In order to make the whole process of circuit design， function analysis and printed circuit of digital clock could operate automatically on computer， so that it will cut down the design cycle， improve the design efficiency and diminish the design risk. This paper designed a scheme of counting decoding quartz digital clock by adopting P-MOS large-scale integrated circuits LM8560 based on EDA technology.It can create schematic diagrams and draw printed circuit boards upon of Protel99SE software platform， and also realize the time setting and display， time adjustment and clock alarming function. At last， a perfect digital clock is made.