【正文】 南京工程學(xué)院 自動(dòng)化學(xué)院 本科畢業(yè)設(shè)計(jì)（論文） 題目： 基于單片機(jī)的籃球賽計(jì)時(shí)計(jì)分器器的設(shè)計(jì) 專(zhuān)業(yè)： 自動(dòng)化 Gradustcion Design (Thesis) Design of the splitterbased singlechip basketball game time scoring By Zhouweijun Supervised by Prof. XING Can hua Department of Automstcion Engineering Nanjing Institute of Technology April, 20xx 南京工程學(xué)院自動(dòng)化學(xué)院本科畢業(yè)設(shè)計(jì)（論文） 摘 要 此次設(shè)計(jì) 屬于計(jì)算機(jī)控制技術(shù)弱電課程設(shè)計(jì)，主要通過(guò)基于單片機(jī)STC89C51 芯片座位本次核心控制元件 ，利用數(shù)碼管座位顯示器件，鍵盤(pán)輸入電路等相關(guān)的軟件的有機(jī)結(jié)合以及喇叭等輔助器件，構(gòu)成了一個(gè)滿足基本設(shè)計(jì)要求的籃球計(jì)時(shí)計(jì)分系統(tǒng) 。本系統(tǒng)可滿足倒計(jì)時(shí)方式顯示單節(jié)比賽剩余時(shí)間，可暫停，顯示雙方得分，按鍵輸入修改分值，如有錯(cuò)誤可 進(jìn)行分值的相應(yīng)修改。整場(chǎng)比賽結(jié)束時(shí)有聲音提示。系統(tǒng)符合一般籃球賽計(jì)時(shí)器的工作要求。采用數(shù)碼管顯示器件，因?yàn)槠湮⒐?、小體積、使用靈活等諸多優(yōu)點(diǎn)在袖珍式儀器和低功耗應(yīng)用系統(tǒng)中得到越來(lái)越廣泛的應(yīng)用，而且有利于硬件實(shí)物的成功。設(shè)計(jì)的主要方法主要是通過(guò)仿真確定方案的可行性，然后在進(jìn)行局部測(cè)試實(shí)物是否滿足仿真的設(shè)計(jì)要求，最后把整體電路搭建完成做最后的測(cè)試和調(diào)試。 關(guān)鍵詞： STC89C51。 數(shù)碼管顯示 。 計(jì)數(shù)器 。 計(jì)分器 南京工程學(xué)院自動(dòng)化學(xué)院本科畢業(yè)設(shè)計(jì)（論文） ABSTRACT The design is putercontrolled weak curriculum design, mainly through the bination of speakers and other auxiliary devices, the use of the software of the digital tube seat display, keyboard input circuit the microcontroller STC89C51 chip seat of the core control elements, constituting at the basic design requirements basketball timing scoring system. This system can meet the countdown display the remaining time of a single game to pause, to show both sides scoring key input to modify the score, if an error scores can be modified accordingly. The end of the game, a voice prompt. The system meets the requirements for the work of the general basketball timer. Digital display, micropower, small size, the use of flexible and many other advantages to be more widely used in pocketsized instrument and lowpower applications, but also conducive to the success of the hardware in kind. The main method of design is to determine the feasibility of the program through the simulation, and then meet in kind during the local test simulation design requirements, the overall circuit structures to plete the final testing and debugging. Key words： STC89C51。 digital display。 counter。 scoring 南京工程學(xué)院自動(dòng)化學(xué)院本科畢業(yè)設(shè)計(jì)（論文） 目 錄 第一章 緒論 ....................................................................................... 1 引言 ...................................................................................................................1 設(shè)計(jì)背景 ............................................................................................................1 設(shè)計(jì)目的 ............................................................................................................2 設(shè)計(jì)意義 ...........................................................................................................2 第二章 系統(tǒng)硬 件介紹 ........................................................................ 3 MCS51 單片機(jī)簡(jiǎn)述 .......................................................................................3 單片機(jī) STC89C51 簡(jiǎn)介 .......................................................................3 主要特性 ...............................................................................................5 管腳說(shuō)明 ...............................................................................................5 芯片擦除 ...............................................................................................6 空閑節(jié)電模式 .......................................................................................7 掉電模式 ...............................................................................................7 程序存儲(chǔ)器的加密 ...............................................................................8 的極限參數(shù) .........................................................................8 顯示器及其接口 ...............................................................................................8 顯示器介紹 ...........................................................................................8 結(jié)構(gòu)與原理 ...........................................................................................9 顯示器顯示方式 ......................................................................... 11 顯示器接口實(shí)例 .........................................................................13 報(bào)警器 .............................................................................................................15 報(bào) 警器的分類(lèi) ....................................................................................15 報(bào)警器工作原理 ................................................................................15 74HC573 芯片介紹 .........................................................................................15 矩陣鍵盤(pán) .........................................................................................................16 第三章 硬件電路的設(shè)計(jì) ................................................................... 12 DXP 軟件的介紹 .............................................................................................19 系統(tǒng)方案的設(shè)計(jì) ............................................................................................29 硬件總體設(shè)計(jì) ................................................................................................32 STC89C51 最小系統(tǒng)板部分 ..............................................................33 振蕩電路 ............................................................................................33 南京工程學(xué)院自動(dòng)化學(xué)院本科畢業(yè)設(shè)計(jì)（論文） 計(jì)時(shí)電路 設(shè)計(jì) ...................................................................................34 計(jì)分 電路 設(shè)計(jì) ...................................................................................34 串行接口工作原理 ..........................................................................35 復(fù)位電路原理 ...................................................................................36 電源開(kāi)關(guān)電路原理 ........................................