基于51单片机具有整点提示的数字时钟设计 毕业论文.docVIP

基于51单片机具有整点提示的数字时钟设计 The digital clock design with the whole point timekeeping based on 51 SCM 专业班级： 通信0801 学生姓名： 指导教师： 学 院：电子工程学院 2012年 6月 摘　要 1957年,Ventura发明了世界上第一个电子表，从而奠定了电子时钟的基础，电子时钟开始迅速发展起来。现代的电子时钟是基于单片机的一种计时工具。本次设计的数字时钟是以AT89S52单片机和时钟芯片DS1302为核心，以共阳数码管显示为主体。该时钟系统主要由组成。系统具有简单清晰的操作界面，能够准确显示时间（显示格式为时时：分分：秒秒，24小时制），可随时进行时间调整，具有闹钟时间设置、闹钟开/关。设计以硬件软件化为指导思想，充分发挥单片机功能，大部分功能通过软件编程来实现，电路简单明了，系统稳定性高。同时，该时钟系统还具有功耗小、成本低的特点，具有很强的实用性。由于系统所用元器件较少，单片机所被占用的I/O口不多，因此系统具有一定的可扩展性C语言编写，便于移植与升级。ABSTRACT In 1957, Ventura invented the worlds first electronic watches, which laid the foundation of electronic clock, electronic clock began to develop quickly. Modern electronic clock is based on a timing tool. The digital clock design based on AT89S52single chip and a clock chip DS1302as the core, to a total digital tube display as the main body. The clock system is mainly composed of a single-chip control module, alarm module, the music the whole point prompt module, the temperature display module and digital tube display module. The system is simple and clear user interface, can accurately display the time ( HH: display format: seconds,24 hours ), may at any time to time adjustment, and has set the alarm time, the alarm on / off, temperature display and music the whole point of prompting function. The design of hardware and software into the guiding ideology, give full play to the function of MCU, most of the functionality through software programming, simple circuit, high stability of the system. At the same time, the clock system also has a small power consumption, low cost, strong practicability. Due to the system components used by fewer, single-chip occupied by the I/O port is not much, so the system has a certain degree of scalability. The software program is compiled by C language, easy to transplant and upgrade. Keywords：digital clock; microcontroller; the DS1302; Yang digital tube; music chip 目 录 1 引言 1 1.1 设计背景 1 1.2 设计简介 1 1.3 论文安排 2 2 总体设计 3 2.1 方案论证与比较 3 2.1.1