多功能出租车计价器设计资料

多功能出租车计价器目 录第1节 引 言·································································· 11. 1 出租车计价器概述········································································· 11. 2 本设计任务··················································································· 1 1.2.1 设计任务················································································· 1 1.2.2 设计要求················································································· 11. 3 系统主要功能··············································································· 2第2节 出租车计价器硬件设计················································· 32.1 系统的硬件构成及功能···································································· 32. 2 AT89S51 单片机及其引脚说明·························································· 32.3 AT24C02引脚图及其引脚功能··························································· 62. 4 AT24C02 掉电存储单元的设计························································· 62.5 里程计算、计价单元的设计····························································· 72.6 数据显示单元设计·········································································· 8第3节 系统软件设计···························································103. 1 系统主程序设计············································································ 103. 2 定时中断程序设计········································································ 103. 3 里程计数中断服务程序设计···························································· 103.4 中途等待中断服务程序设计···························································· 103. 5 键盘服务程序设计·········································································103. 6 显示子程序服务程序设计······························································· 10第4节 系统调试与测试结果分析··············...