摘 要所谓事务管理系统就是主要用来做提醒，辅助以计时、秒表等的一个小系统。利用MCS51单片机即可完成系统硬件需要，成本低廉，程序简单，功能丰富实用，使用率广。根据题目的设计要求，该系统要实现的功能主要有：事务提醒、定时、秒表、扬声器、小灯闪烁、键盘、液晶屏。其中事务提醒功能可重复可循环，用键盘进行输入，扬声器和小灯作为提醒作用，液晶屏输出显示。在了解了题目要求后，首先进行框图确定并且确定各模块的硬件需要以及各种元器件的需要，之后进行硬件电路的设计，同时，对软件部分的流程进行了演草和模拟，并确定参数。在此设计的最后环节，就是对所有模块的资源整合，扩展功能的实现和编程，最终得到完整的程序。70309

毕业论文关键词：单片机  事务提醒  编程

Transaction Management System Based on Single Chip Microcomputer

Abstract

  So-called transaction management system is mainly used to do remind, aided by a small system such as timing, a stopwatch. By using MCS51 single chip microcomputer to complete the system hardware, low cost, simple program, feature-rich, practical, and wide usage. According to the requirements of the subject design, in order to realize the function of the system mainly include: transaction remind, timer, stopwatch, speakers, small lights flashing, keyboard, LCD screen. The transaction alerts can be repeated cycle, use keyboard, speakers and small lights as a reminder, LCD display output. After understanding the topic request, first to make sure to block diagram of each module and determine the hardware needs and the needs of the various components, followed by the design of the hardware circuit, at the same time, the software part of the process has carried on the grass and simulation, and parameters were determined. In the last link of the design, which is for all modules of resource integration, the realization of the function of extension and programming, finally get the complete program.

Key words: single chip microcomputer  affairs remind  programming

目录

摘 要 II

Abstract III

目录 IV

1概述 2

1.1 事务管理系统的概述 2

1.2 研究课题的目的和意义 3

1.3 国内外研究现状 4

1.4 设计内容和要求 5

1.4.1 设计要求 5

1.4.2 设计内容 5

2系统方案分析与选择论证 5

2.1主控芯片方案比较 5

2.2 显示模块方案比较 6

2.3时钟模块方案比较 6

2.4系统最终方案确定 6

3 事务管理系统的硬件设计 7

3.1 基于单片机的事务管理系统的总原理图 8

3.2 原理图各模块的讲解 9

3.2.1单片机 9

3.2.2扩展的时钟芯片 11

3.2.3扩展的键盘模块