【正文】 課 程 設(shè) 計(jì) 說 明 書 課程設(shè)計(jì)名稱： 電子技術(shù)課程設(shè)計(jì) 題 目： 數(shù)字鐘 學(xué) 院： 學(xué) 生 姓 名： 專 業(yè)： 學(xué) 號(hào)： 指 導(dǎo) 教 師： 日期： 2021年 7 月 10 日 成績(jī) I 西華大學(xué)課程設(shè)計(jì)說明書 數(shù)字鐘 摘 要： 本設(shè)計(jì) 是設(shè)計(jì)一個(gè)數(shù)字鐘，要求能準(zhǔn)時(shí)以星期、時(shí)、分、秒顯示時(shí)間，其中星期是 7 進(jìn)制，小時(shí)是 24 進(jìn)制，分和秒都是 60 進(jìn)制，該數(shù)字電子鐘還應(yīng)具有校時(shí)功能，以便當(dāng)數(shù)字鐘接通電源或出現(xiàn)計(jì)時(shí)誤差時(shí)，能對(duì)時(shí)間進(jìn)行校準(zhǔn)。同時(shí)還應(yīng)整點(diǎn)報(bào)時(shí)的功能，在整點(diǎn)到來(lái)前十秒能以每間隔一秒時(shí)間的規(guī)律發(fā)出聲響，以最后一聲聲響結(jié)束時(shí)刻為整點(diǎn)時(shí)刻。該電路具有秒脈沖發(fā)生模塊、計(jì)數(shù)模塊、譯碼模塊、顯示模塊、校時(shí)模塊、整點(diǎn)報(bào)時(shí)模塊，其中秒脈沖發(fā)生模塊由 555 多諧振蕩器經(jīng)分頻電路產(chǎn)生 1Hz 的標(biāo)準(zhǔn)脈沖，其他模塊由一些基本的集成芯片和 邏輯門構(gòu)成。該電路的設(shè)計(jì)與我們所學(xué)的知識(shí)緊密結(jié)合，讓我們更加理解各種器件的功能與結(jié)構(gòu)。 關(guān)鍵詞： 數(shù)字鐘， 555 多諧振蕩器，集成芯片 Abstract： This design is to design a digital clock, timetoweek, hour, minute, and seconds to display time, which is a 7week, 24 hours, minutes and secondsis 60 m, the digital clock with time correction should also be functional in order to power up when a digital clock or timer error, on time for calibration. At the same time should also be the whole point of the function, the whole point of arrival of the first ten seconds to 4 subwoofer 1 treble order interval beep a second to the last sound treble end time for the whole point of the moment. The circuit has a second pulse module, counting module, decoding module, display modules, correction module, the whole point of timekeeping module, which occurred in the second pulse modules from 555 multivibrator standard pulse generated 1Hz, other modules from some basic integrated circuits and logic gates. The circuit design and our knowledge, let us a better understanding of the various functions and structure of the device. Keywords： Digital clock， 555 multivibrator， integrated circuits II 西華大學(xué)課程設(shè)計(jì)說明書 目 錄 1 前言 ........................................................................................................................................ 1 設(shè)計(jì)背景 ..................................................................................................................... 1 設(shè)計(jì)目標(biāo) ..................................................................................................................... 1 實(shí)施計(jì)劃 ..................................................................................................................... 2 必備條件 ..................................................................................................................... 2 2 總體方案設(shè)計(jì) ........................................................................................................................ 3 方案比較 ..................................................................................................................... 3 方案一 .............................................................................................................. 3 方案二 .............................................................................................................. 4 方案論證 ..................................................................................................................... 5 方案選擇 ..................................................................................................................... 5 3 單元模塊設(shè)計(jì) ........................................................................................................................ 6 各單元模塊功能介紹及電路設(shè)計(jì) ............................................................................. 6 秒脈沖模塊設(shè)計(jì) .............................................................................................. 6 整點(diǎn)報(bào)時(shí)模塊設(shè)計(jì) .......................................................................................... 7 顯示模塊設(shè)計(jì) .................................................................................................. 8 校時(shí)計(jì)數(shù) 模塊設(shè)計(jì) .......................................................................................... 9 特殊器件的介紹 ....................................................................................................... 10 NE555 器件介紹 ............................................................................................ 10 74LS160 介紹 .......................................................................