簡(jiǎn)易電子鬧鐘的設(shè)計(jì)論文報(bào)告-全文預(yù)覽
【正文】 he busy and plicated and easy to make people fet the current time. Fet to do, when it is not very important, this not hurt the important essentials. Simple electronic alarm clock is a used to after a certain period of time through the alarm sounds and wakes up the user a simple electronic circuit and is used to prevent nap sleep overdo the instrument from time to time to wake up the user39。 time clock 桂林電子科技大學(xué)基礎(chǔ)工程設(shè)計(jì)說(shuō)明書 目 錄 引言 ..............................................................................................................................................1 1 設(shè)計(jì) 任務(wù) ..................................................................................................................................2 設(shè)計(jì)題目 ..........................................................................................................................2 設(shè)計(jì)要求 ..........................................................................................................................2 2 系統(tǒng)的組成 ..............................................................................................................................3 系統(tǒng)的組成總體框圖 ........................................................................................................3 各部分系統(tǒng)的功能 ............................................................................................................3 方案可行性分析與仿真調(diào)試 ..............................................................................................3 時(shí)鐘信號(hào)發(fā)生系統(tǒng) ...................................................................................................3 按鍵輸入系統(tǒng) ..........................................................................................................5 倒計(jì)時(shí)與響鈴系統(tǒng) ..................................................................................................6 各系統(tǒng)的銜接與總原理圖 ........................................................................................9 3 硬件設(shè)計(jì) ................................................................................................................................ 10 元器件選擇的依據(jù)以及元件參數(shù)的確定 .......................................................................... 10 PCB 原理圖與電路圖布線設(shè)計(jì) ...................................................................................... 10 硬件制作 ......................................................................................................................... 11 4 系統(tǒng)調(diào)試 .............................................................................................................................. 12 信號(hào)發(fā) 生器的調(diào)試 .......................................................................................................... 12 計(jì)數(shù)器以及數(shù)碼管顯示的調(diào)試 ........................................................................................ 12 響鈴系統(tǒng)調(diào)試 ................................................................................................................. 12 按鍵輸入電路的調(diào)試 ...................................................................................................... 12 5 結(jié)論 ....................................................................................................................................... 14 謝 辭 ........................................................................................................................................ 16 參考文獻(xiàn) ..........................................
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