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硬件课程设计报告
姓 名： 夏**
学 号： ********
学 院：计算机学院
专 业： 信息安全
设计题目：出租车计价器
指导教师：
2013年 12月 16日
课程设计指导教师评阅书
指导教师评语：
成 绩： 指导教师签字：
年 月 日
[摘要] 在本次设计中，我以计价器的基本功能作为设计的重点，使用试验箱模拟出出租车的正常运行与计价，实验中包括计价器的开始计价、行车暂停、停车结账、计价器清零等功能，同时，在本次计价器运行过程中，计价器在路程不满三公里自动显示为7元，当出租车行驶里程超过三公里时，每超过0.1km,计价器显示屏增加0.16元。为了完成上述设计，我们采用了8254、8255、、0832等芯片，还使用了键盘模拟控制出租车启动与停车功能，用计算机汇编语言进行软件功能的实现出租车计价功能。
[关键词] 0832 8253/4 8255 键盘
目 录
引言···························································6
1.设计任务与要求···············································7
1.1设计目的····················································7
1.2设计思路····················································7
1.3 设备器材···················································7
需求分析·····················································8
2.1开、停车····················································8
2.2路程、费用的计算············································8
2.3 LCD显示···················································8
2.4清零························································8
3.硬件方案·····················································9
3.1 可编程计数器/定时器8253/8254原理··························9
3.2可编程外围接口芯片8255原理································11
3.3可编程中断控制器8259A·····································13
3.4 DAC0832···················································14
3.5 直流电机霍尔传感器·········································14
3.6硬件连线图·················································17
软件方案····················································18
4.1功能模块图·················································18
4.2程序流程图·················································19
4.3计价程序流程图·············································20
4.4子程序·····················································21
测试························································34
5.1问题分析·······························
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