【正文】 ... 1 課題背景 ......................................................................................................................... 1 國內(nèi)外研究現(xiàn)狀及趨勢 ................................................................................................... 1 本文的主要工作 ............................................................................................................... 1 、 VHDL 介紹 ....................................................................................................................... 1 CPLD 現(xiàn)狀及發(fā)展 ............................................................................................................. 1 CPLD 的結構與特點 ......................................................................................................... 2 CPLD 基本結構 ...................................................................................................... 2 CPLD 的特點 ......................................................................................................... 2 VHDL 設計優(yōu)點 ................................................................................................................ 3 ................................................................................................................. 3 出租車計費器的總體設計 ................................................................................................. 3 出租車計費標準 .................................................................................................... 3 總體框架設計 ....................................................................................................... 3 出租車計費器主要模塊設計 ............................................................................................. 4 速度模塊 .............................................................................................................. 4 計程模塊 .............................................................................................................. 4 計時模塊 .............................................................................................................. 5 計費模塊 .............................................................................................................. 5 ............................................................................................................................ 6 整體電路圖 ..................................................................................................................... 6 電源電路 ........................................................................................................................ 6 啟動 /停止按鍵電路 ......................................................................................................... 6 自動清零部分 ................................................................................................................. 7 ................................................................................................................. 7 QuartusⅡ軟件介紹 ......................................................................................................... 8 仿真結果 ......................................................................................................................... 8 整體仿真 ............................................................................................................... 8 速度模塊仿真 ........................................................................................................ 9 計程模塊仿真 ........................................................................................................ 9 計時模塊仿真 ...................................................................................................... 10 計費模塊仿真 ..................................................................................................... 10 設計測試 ........................................................................................................................11 ..............................................................................................................................11 致謝 ............................................................................................................................................11 參考文獻 ...............................................................................................................