多功能出租車計價器

目 錄

 引 言·································································· 1
1. 1  出租車計價器概述········································································· 1
1. 2  本設(shè)計任務··················································································· 1
  1.2.1  設(shè)計任務················································································· 1
  1.2.2  設(shè)計要求················································································· 1
1. 3  系統(tǒng)主要功能···············································································  2
 出租車計價器硬件設(shè)計················································· 3
　　　2.1 系統(tǒng)的硬件構(gòu)成及功能···································································· 3
　　　2. 2  AT89S51單片機及其引腳說明·························································· 3
　　　2.3  AT24C02引腳圖及其引腳功能··························································· 6
　　　2. 4  AT24C02 掉電存儲單元的設(shè)計·························································  6
　　　2.5  里程計算、計價單元的設(shè)計····························································· 7
　　　2.6  數(shù)據(jù)顯示單元設(shè)計·········································································· 8
 系統(tǒng)軟件設(shè)計···························································10
　　　3. 1  系統(tǒng)主程序設(shè)計············································································ 10
3. 2  定時中斷程序設(shè)計········································································ 10
3. 3  里程計數(shù)中斷服務程序設(shè)計···························································· 10
3.4  中途等待中斷服務程序設(shè)計···························································· 10
3. 5  鍵盤服務程序設(shè)計·········································································10
3. 6  顯示子程序服務程序設(shè)計······························································· 10
 系統(tǒng)調(diào)試與測試結(jié)果分析·············································· 13
　　　4. 1  使用的儀器儀表··········································································· 13
　　　4.2  系統(tǒng)調(diào)試····················································································· 13
　　　4.3  測試結(jié)果····················································································· 13
　　　4.4  測試結(jié)果分析·············································································· 13
 結(jié)束語································································· 14
附錄··········································································· 15
參考文獻······································································· 40