基于单片机的食堂IC卡设计软件部分.doc

摘 要 随着中国经济的不断提高，人们生活水平的日渐提升，各单位企业的人数也在不断增加，解决员工就餐问题成了一些企业要解决的首要问题。在电子信息技术和计算机技术高度发达的今天，人们把智能IC卡应用到多个领域，当然也进入了食堂，这就为许多企事业单位解决了重要的问题。 本此设计的食堂IC卡系统利用单片机STC89C52完成了充值、扣费报警、复位等功能。显示部分采用LCD12232液晶显示器，能够支持汉字和数字输出，简单明了。键盘采用4*4键盘模块，输入方便。IC卡采用了西门子公司的SLE4442逻辑加密卡。设计结果表明，此系统设计容易，结构简单，造价低廉，维修方便，能够广泛应用于各种单位的食堂中。 关键词：单片机，IC卡，键盘 Subject: Design of Canteen IC card system Based On Microcomputer (software) Specialty : Automation Name : Shi Lingyan (Signature）＿＿＿＿ Instructor : Wang Xia (Signature) ＿＿＿＿ ABSTRACT With Chinas economy constant improving and the improvment of the living standards of people, increasing the number of many enterprises have also increased, solving thhis problem has become some more and more importang. In the electronic information technology and computer technology is highly developed today, people to put smart IC card application to DuoGe field, of course, also entered the dining room, this is for many enterprises solve the important problem. The design of the dining room IC card system using microcomputer STC89C52 completed prepaid money and debits function. Show LCD12232 part adopts LCD monitor, able to support the Chinese character and digital output, simple and clear. The keyboard with 4 * 4 keyboard module, the input is convenient. IC card used the Siemens company SLE4442 logic encryption card. The results indicate that the system design, the design of simple structure, easy maintenance, low cost, convenient are widely used in many kinds of unit of the dining room. KEY WORDS: microcomputer, IC card, Keyboard 目 录 1 绪 论 1 1.1选题背景 1 1.2 IC卡发展与应用 2 1.3 设计意义 3 2 系统总体方案及硬件选择 5 2.1系统功能说明 5 2.2 系统总体方案设计 5 2.4 IC卡选择 6 2.5 键盘选择 7 2.6显示器选择 7 3 硬件电路设计 9 3.1 单片机部分 9 3.1.1单片机STC89C52 9 3.1.2 主要管脚介绍 10 3.1.3芯片擦除 11 3.1.4单片机最小系统电路 11 3.2 SLE4442部分 13 3.2.1 SLE4442主要指标 13 3.2.2 SLE4442引脚的配置 14 3.2.3 IC卡接口电路 14 3.3 LCD12232液晶显示部分 15 3.3.1 LCD12232简介 15 3.3.2 液晶显示器技术参数 16 3.3.3汉字显示原理 16 3.3.4 ASCII码显示原理 17 3.3.5液晶显示电路 18 3.4 4*4