毕业论文：基于51单片机的语音电子时钟系统77.doc

东 华 理 工 大 学 长 江 学 院 毕 业 论 文 题 目 基于51单片机的语音电子时钟系统 英文题目 The design of digital voice clock system based on 51 MCU 摘 要 单片ABSTRACT A monolithic computer is single chip microcomputer. By RAM, ROM, CUP, timing, counting and multiple interfaces and the integration of the micro controller. He has the advantages of small volume, low cost, strong function, widely used in smart industries, and industrial automation. And 51 Series SCM is the most typical and the most representative one. The graduation design through the study, application, to achieve the study, design ability. The article used the microcontroller AT89C51 as the core, clock signal that was produced by clock integrated chip DS1302 will be bring into the SCM, and are dynamic display by six LED. By the method of continuously query schedule time which was stored in SCM, using voice chip play music, simultaneously, by defining three keys and taking the control of software, the system accomplish the function of rapidly setting time and broadcasting time when the clock reach the whole point. Hardware section describes clock integrated chip DS1302 and clock signal module, HY-1 series of voice chip and automatic control of the ring module, DC power module, microcontroller AT89C51 and dynamic display module. Software section mainly introduces the ways of design and flow chart of the main program and module program. Key words: digital clock; SCM; clock integrated chip; voice chip 目 录 摘 要 I ABSTRACT I 目 录 1 绪 论 2 1. 系统的总体设计 3 1.1 系统设计要求 3 1.2 系统设计总方案 3 2. 系统的硬件设计 6 2.1 时钟电路模块 6 2.2 校时模块 10 2.3 整点报时模块 11 2.4 数码管显示模块 11 2.5 音乐打铃模块 15 2.6 AT89C51的外设电路 17 2.7 直流电源电路 22 3. 系统软件设计 24 3.1 软件设计思路 24 结 论 28 效果展示图： 29 致 谢 30 参考文献 31 附录1 32 绪 论 数字时钟是采用数字电路实现时、分、秒显示的计时装置，广泛用于个人家庭、车站、码头等场所，成为人们日常生活不可缺少的必需品。由于电子时钟采用了石英技术，因而走时精度高、稳定性好、使用方便、不需要经常调校。与机械式时钟相比具有更高的准确性和直观性，且无机械装置，具有更长的使用寿命。数字电子时钟用集成电路计时时，译码代替机械式传动，用数码管LED代替指针显示进而显示时间，减小了计时误差，这种表具有时、分、秒显示时间的功能，还可以进行校时。故钟表的数字化给人们的生活带来了极大的方便。然而随着电子技术的飞速发展以及人们的生活水平