【正文】 .. 1 第 2 章 引 言 ............................................................................................................. 2 研究背景 ............................................................................................................. 2 論文研究目標(biāo)和意義 ............................................................................................ 2 第 3 章 方案論證與設(shè)計(jì) ................................................................................................... 3 總體設(shè)計(jì)分析 ..................................................................................................... 3 方案的選擇與設(shè)計(jì) .............................................................................................. 3 電源電路 .......................................................................................................... 3 邏輯電平開關(guān)電路 ............................................................................................ 3 邏輯電平顯示電路 ............................................................................................ 4 數(shù)碼管顯示電路 ............................................................................................... 4 555檢測電路 ..................................................................................................... 4 時(shí)鐘與分頻電路 ............................................................................................... 4 集成數(shù)字 IC電路 .............................................................................................. 4 第 4 章 硬件電路設(shè)計(jì) ...................................................................................................... 5 原理分析 ............................................................................................................ 5 電源電路 .......................................................................................................... 5 555檢測電路 .................................................................................................... 6 邏輯電平開關(guān)電路 ............................................................................................ 8 邏輯電平顯示 電路 ............................................................................................ 8 數(shù)碼管顯示電路 ............................................................................................. 11 時(shí)鐘與分頻電路 ............................................................................................. 16 第 5章 電路調(diào)試 ........................................................................................................... 18 調(diào)試的設(shè)備 ........................................................................................................ 18 調(diào)試步驟 ........................................................................................................... 18 電源模塊調(diào)試 ................................................................................................. 18 邏輯開關(guān)與顯示電路模塊調(diào)試 ........................................................................ 18 數(shù)碼管顯示調(diào)試 ............................................................................................. 18 555檢測電路調(diào)試 ........................................................................................... 19 時(shí)鐘與分頻電路調(diào)試 ...................................................................................... 19 集成數(shù)字 IC電路 ............................................................................................ 19 第 6 章 使用說明 ........................................................................................................... 20 使用方法 .......................................................................................................... 20 注意事項(xiàng) .......................................................................................................... 20 故障分析 .......................................................................................................... 20 電源模塊 ........................................................................................................ 20 邏輯開關(guān)與顯示模塊 ...................................................................................... 20 數(shù)碼管顯示模塊 ............................................................................................. 21 555檢測電路模塊 ........................................................................................... 21 時(shí)鐘與分頻電路模塊 ...................................................................................... 21 參考文獻(xiàn) ........................................................................................................................ 22 致謝 ............................................................................................................................... 23 附件一： ................................................................................................................. 24