用单片机内部定时器实现的数字钟_智能测控仪器设计 2017年3月.docVIP

“智能测控仪器设计”课程 项目设计总结报告 项目名称： 用单片机内部定时器实现的数字钟 指导老师： 学 号： 专业年级： 完成时间： 2013 年 7 月 用单片机内部定时器实现的数字钟 摘要：近年来随着计算机在社会领域的渗透和大规模集成电路的发展，单片机的应用正在不断地走向深入，由于它具有功能强，体积小，功耗低，价格便宜，工作可靠，使用方便等特点，因此特别适合于与控制有关的系统，越来越广泛地应用于自动控制，智能化仪器，仪表，数据采集，军工产品以及家用电器等各个领域，单片机往往是作为一个核心部件来使用，在根据具体硬件结构，以及针对具体应用对象特点的软件结合，以作完善。本文介绍了基于单片机AT89C51的数字钟的设计，详细讨论了它从软件上实现的过程，重点在时钟调整的方式：查询和中断的比较，然后，对数字钟的稳定性和精确性作了相关的讨论。在文章的最后，给出了采用中断方式实现的数字钟的源程序。本次设计通过对一个时钟显示、手动校时等功能的时间系统的设计，其中结合了LCD1602显示、单片机定时中断等技术。 单片机的应用In recent years along with computer penetration in the social sphere and the large scale integrated circuit development, MCU applications are constantly deepening, because it has strong function, small volume, low power consumption, low price, reliable work, so that the use is convenient wait for a characteristic, thus it is especially suitable for and control of relevant system, more and more widely and its application in automatic control, intelligent instruments, instrumentation, data acquisition, military products and household appliances and other fields, the microcontroller is often used as a core component to use, in accordance with the specific hardware structure, and the specific characteristics of the target application software node, to make perfect. This article introduced based on the single-chip digital clock design, discussed in detail from the software implementation process, heavy in the clock adjustment way: queries and disruption of comparison, and then, on the digital clock made of the stability and accuracy of closed the discussion. At the end of the article, gives the interrupt mode to achieve digital clock source. This design through to a clock display, manual school functions when the time system design, which combines the LCD1602 display, dynamic scanning, SCM timer interrupt technology. Key words: The application of MCU, AT89C51, LCD1. 项目研究意义与研究现状数字钟是采