【正文】 也因?yàn)檫@樣，我明白了真理總是在不斷的揣摩中產(chǎn)生的，這是我的最深體會(huì)。等待按鍵的釋放。 JNZ LK2 ACALL DISPLAY 。硬件電路圖見(jiàn)附錄。這樣雖然在某一時(shí)段只有一位數(shù)碼管被點(diǎn)亮，但是由于人眼的視覺(jué)暫留效應(yīng)，實(shí)際效果與靜態(tài)顯示完全一樣。芯片內(nèi)部的采樣時(shí)鐘在出廠前已調(diào)校,誤差在 +1%內(nèi)。片選(SS) 此端為低,即向該ISD4004芯片發(fā)送指令，兩條指令之間為高電平。具有聲音清晰自然，節(jié)約內(nèi)存，體積小、成本低，可靠性高，安裝、調(diào)試使用都很方便的特點(diǎn)。關(guān)鍵字：?jiǎn)纹瑱C(jī)，語(yǔ)音提示，文字顯示，公交報(bào)站（500字以內(nèi)）ABSTRACT The design mainly solve the problem of how to easily and accurately indicate that passengers arriving. It has the function of analog voice reporting and forecasting station on the text display ,reporting number and station name ,and voice information recording and station name selection control. The system includes microcontroller module, voice recording and playback circuitry, station number, station name display modules, interface circuit of the keyboard, reset circuit and power supply. The system uses 51 Singlechip Microputer to control speech synthesis chip and liquid crystal display module. Speech synthesis chip ISD4004 adopts the patented technology for semiconductor memory directly simulated data storage of analog voice, that analog voice data is written directly to the individual storage units, not through A/D and D/A conversion, so we can receive the natural emergence of better voice effects and avoid the quantization of noise and distortion caused by the quantization and pression in the generally solid voice circuit. Besides, LCD makes the reporting system more practical.KEY WORDS：Singlechip Microputer, Audio Prompt, Character Display, BusStop AutoAnnounce目 錄中文摘要 1ABSTRACT 2目 錄 3第一章 緒論 41．1 引言 4 5…………………………………………………...5……………………………………...5第二章 硬件電路設(shè)計(jì) 7 7 ISD4004的工作原理 7 LED數(shù)碼顯示原理……………………………………………..9……………………………………….11……………………………………………………….11第三章 程序設(shè)計(jì) 12 12 13參考文獻(xiàn) 17附錄 A 18附錄 B 19附錄C 20致謝 21 第一章 緒論1．1 引言隨著國(guó)民經(jīng)濟(jì)的快速發(fā)展，城市建設(shè)規(guī)模不斷擴(kuò)大，大城市人口高度集中并大幅度增長(zhǎng)，同時(shí)汽車擁有量急劇上升，交通需求迅速擴(kuò)大，而道路交通基礎(chǔ)設(shè)施建設(shè)的發(fā)展則相對(duì)滯后。實(shí)施公交智能化，必須提高公交服務(wù)質(zhì)量，而到站后的準(zhǔn)確、及時(shí)報(bào)站就是一個(gè)方面，本文設(shè)計(jì)的公交車語(yǔ)音報(bào)站器就能解決這方面的問(wèn)題。芯片采用CMOS技術(shù),內(nèi)含振蕩器、防混淆濾波器、平滑濾波器、音頻放大器、