由AT89S51單片機控制實現(xiàn)的電子計時器系統(tǒng)

電子信息工程論文編號:DZXX329  論文字數(shù):9135,頁數(shù):29

目 錄
摘  要 I
ABSTRACT II
第一章 引  言 1
1.1 背景 1
1.2問題的提出 1
1.3主要研究內(nèi)容 1
第二章  系統(tǒng)硬件設(shè)計及分析 3
2.1系統(tǒng)總體結(jié)構(gòu) 3
2.2各功能模塊介紹 3
2.2.1 AT89S51芯片 3
2.2.2 顯示模塊 5
2.2.3 復(fù)位模塊 6
2.2.4 開關(guān)模塊 7
2.2.5 振蕩電路模塊 8
2.3設(shè)計電路及連線 9
第三章  軟件設(shè)計 11
3.1流程圖設(shè)計 11
3.2程序設(shè)計介紹 11
3.3功能子程序 12
3.3.1初始化子程序 12
3.3.2定時器0中斷子程序 14
3.3.3動態(tài)顯示子程序 15
3.3.4 外部中斷1子程序 16
3.4檢測與調(diào)試 17
3.4.1 硬件調(diào)試 17
3.4.2 軟件調(diào)試 17
結(jié)論 19
致謝 20
參考文獻 21
附錄 源代碼 22

摘  要
 目前，隨著單片機應(yīng)用技術(shù)的快速發(fā)展，以單片機為核心的嵌入式系統(tǒng)已經(jīng)廣泛的應(yīng)用于各個領(lǐng)域。本文就單片機應(yīng)用于計時測量和計時控制，設(shè)計了一種由AT89S51單片機控制實現(xiàn)的電子計時器系統(tǒng)。
 本文主要介紹了利用單片機實現(xiàn)計時器系統(tǒng)的方法，從軟件、硬件兩方面著手，對設(shè)計、調(diào)試等方面進行了論述，并在結(jié)論部分對該設(shè)計所完成的功能作出了評價。本設(shè)計不僅可以很好地實現(xiàn)開啟、暫停、復(fù)位功能，而且可以精確到10毫秒。因此在時間精度方面還是比較有優(yōu)勢的。最后通過實際應(yīng)用證明該計時器系統(tǒng)運行可靠，能產(chǎn)生一定的經(jīng)濟價值。
 
關(guān)鍵詞：單片機,電子計時器,毫秒 

ABSTRACT
 At present, with the rapid development of the MCU applications，the embedded systems as the core of microcontroller have been widely used in various fields. this paper is refer to the application of time and time measurement control, and developed a timer system which is base on AT89S51 SCM control.  This paper mainly describes the use of MCU timer system, from the beginning of the designing of software, hardware, discussed both proceed to the design, testing and other aspects. Also made the eva luation in the the part of the completion of the function of the design conclusions. The design not only can achieve good opening, pause, reseting functions, and also can be accurate to 10 milliseconds. Therefore, there are more advantages in the time for precision. Finally through the practical application we proved its a reliable timer operation system, can produce a certain economic value.

Key words:  MCU ,Electronic timer ,millisecond