【正文】 I 基于單片機的多功能計算器的設(shè)計與實現(xiàn) 作者姓名 ：袁禮 專業(yè)班級：電氣 5 班 指導(dǎo)教師：羅耀耀 摘 要 單片機是計算機制造技術(shù)高速發(fā)展下所誕生的產(chǎn)物，它是嵌入式 系統(tǒng)的控制核心，如今，它已被廣泛的應(yīng)用于國民經(jīng)濟(jì)建設(shè)、軍工產(chǎn)品及家用電器之中 ，而計算器作為一種方便快捷的計算工具在生活中得到了普遍使用 。 本次 設(shè)計的題目是 基于單片機的多功能計算器的設(shè)計與實現(xiàn) ，通過 設(shè)計 實現(xiàn) 溫度 的測量、時鐘的顯示 以及 計算器的 加、減、乘、除 基本四則運算，并將數(shù)據(jù)發(fā)送到 LCD上顯示。 系統(tǒng)設(shè)計 采用 SCT89C52 單片機 作為主要的控制元件，使 用 4 4 矩陣鍵盤作為主要的輸入設(shè)備，實現(xiàn)功能的選擇 以及數(shù)字和運算符的輸入。 關(guān)鍵詞 ： 單片機； 計算器； 矩陣鍵盤； LCD I The Design and Implementation of a Multifunction Calculator Based on Single Chip Microputer Abstract： MCU is the rapid development of puter manufacturing technology at the birth of the product, which is the core of embedded systems, and now, it has been widely used in the national economy, military products and household appliances, among which as a convenient calculator quick calculation tool has been widely used in life. This topic is designed MCU multifunction calculator Design and Implementation, to achieve through the design temperature measurement, display of the clock and calculator to add, subtract, multiply, divide four basic operations, and sends data to the LCD display. SCT89C52 system design using microcontroller as the main control element, using a 4 4 matrix keyboard as the main input device, and implementation choices and digital operator input function. Keyword: MCU， Calculator， Matrix keyboard， LCD I 目 錄 第 1 章 緒論 ............................................................... 1 背景介紹 ..................................................................................................................... 1 設(shè)計目的 ..................................................................................................................... 1 設(shè)計要求 ..................................................................................................................... 1 方案的論證和選擇 ..................................................................................................... 1 方案一 采用 PLC 控制 .................................................................................. 1 方案二 采用 STC89C52 控制 ........................................................................ 2 方案的比較和選擇 .......................................................................................... 2 設(shè)計思路 ..................................................................................................................... 2 系統(tǒng)總體模塊圖 ......................................................................................................... 3 設(shè)計方案 ..................................................................................................................... 3 第 2 章 開發(fā)軟件簡介 ....................................................... 4 Keil C51 編程軟件 ...................................................................................................... 4 Proteus 仿 真軟件 ......................................................................................................... 4 程序燒錄軟件 ............................................................................... 5 第 3 章 硬件系統(tǒng)設(shè)計 ....................................................... 6 主控芯片 STC89C52.................................................................................................. 6 矩陣鍵盤模塊 ............................................................................................................. 8 蜂鳴器 ......................................................................................................................... 8 LCD 顯示模塊 ............................................................................................................. 9 DS18B20 溫度傳感器 ............................................................................................... 10 DS12C887 時鐘芯片 ................................................................................................. 12 復(fù)位電路 ................................................................................................................... 12 晶振電路 ................................................................................................................... 13 第 4 章 軟件系統(tǒng)設(shè)計 ...................................................... 14 總體設(shè)計 ................................................................................................................... 14 II 子程序設(shè)計 ............................................................................................................... 14 1602 液晶控制程序 ........................................................................................ 14 矩陣按鍵掃描程序 ........................................................................................ 14 DS18B20 控 制程序 ........................................................................................ 16 單片機中斷系統(tǒng) ............................................................................................ 16 DS12C887 控制程序 ...................................................................................... 17 第 5 章 Proteus 仿真與設(shè)計 ................................................ 18 系統(tǒng)仿真圖 ............................................................................................................... 18 開機界面和時鐘仿真 ............................................................................................... 19 溫度測量仿真 ........................................................................................................... 20 計算功能仿真 ........................................................................................................... 21 第 6 章 系統(tǒng)功能測試 ...................................................... 24 系統(tǒng)實物圖 ............................................................................................................... 24 開機界面及時鐘顯示 .................................