基于單片機(jī)的電子鐘設(shè)計

電子機(jī)電論文編號:JD795  論文字?jǐn)?shù):7710,頁數(shù):24

  基于單片機(jī)的電子鐘設(shè)計

目錄
摘  要 I
Abstract I
引 言 1
1 多功能電子鐘的工作原理 1
2 多功能電子鐘原理方框圖及整機(jī)電路圖 1
3 多功能電子鐘單元電路的介紹 4
3.1 電源電路 4
3.2  時鐘電路 4
3.3  復(fù)位電路 4
3.4  鍵盤電路 5
4  顯示器工作原理 5
5 AT89S51芯片介紹 7
6 單片機(jī)硬件資源的分配 8
7 軟件設(shè)計 9
8 誤差分析 13
9 具體使用的步驟如下 14
10 結(jié)論 15
參考文獻(xiàn) 15
謝   辭 16
附 錄：電子鐘程序清單 (匯編語言) 17

摘  要：介紹了一種基于AT89S51單片機(jī)設(shè)計電子鐘的方法。首先介紹了電子鐘的工作原理、AT89S51 單片機(jī)的性能和特點(diǎn)、并概述了用單片機(jī)實(shí)現(xiàn)電子鐘的硬件框圖及軟件實(shí)現(xiàn)方法。本設(shè)計以AT89S51芯片為核心，輔以必要的外圍電路，設(shè)計了一個簡易的電子鐘。它由交流電源供電，用六個七段LED數(shù)碼管動態(tài)掃描來顯示，用74LS244芯片進(jìn)行驅(qū)動，四個按鍵實(shí)現(xiàn)時間的調(diào)整，軟件方面采用匯編語言編程。該電子鐘具有硬件成本低、計時準(zhǔn)確、調(diào)整時間容易等特點(diǎn)。
關(guān)鍵詞：電子鐘；單片機(jī)；時間; 發(fā)光二極管

Design of Electronic Clock Based On MCU

Abstract: A method of electronic clock design based on AT89S51 Micro Controller Unit (MCU) is introduced in this thesis. Introduced the working principle of electronic clock, performance and features of AT89S51 MCU, and an overview of the electronic clock with block diagram of the hardware and software implementation, AT89S51chip as the core part with some necessary peripheral circuits, design a simple electronic clock. AC as the power supply, six seven-segment LED digital-tubes are used for display, which work in a dynamically scanning display mode and driven by 74LS244 chip, four buttons can be used to adjust the time, in the software aspect, uses assembly language software programming. The design has some features, such as low-cost hardware, time-accurate and easy adjustment of time, and so on.
Keywords: Electronic clock; MCU; Time; LED