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1、廣州周立功單片機(jī)發(fā)展有限公司Tel:(020)38730916387309173873097638730977Fax:38730925前言個(gè)人電腦已經(jīng)是64位了，您還在使用8位微控制器嗎？盡管一般情況下嵌入式系統(tǒng)對CPU處理能力的要求比個(gè)人電腦（對CPU處理能力的要求）低，但隨著人們生活的提高和技術(shù)的進(jìn)步，嵌入式系統(tǒng)對CPU處理能力的要求也穩(wěn)步的提高，大量高速的與MCS51體系結(jié)構(gòu)兼容的微控制器的出現(xiàn)就證明了這一點(diǎn)。但8位微控制器受限于體系結(jié)構(gòu)，處理能力的提高始終有限。而16位系統(tǒng)在性能上與8位機(jī)相比始終沒有太大優(yōu)勢，成本上與32位系統(tǒng)相比也沒有什么優(yōu)勢，未來
2、一段時(shí)間嵌入式微控制器的發(fā)展方向必然是32位系統(tǒng)?；贏RM體系結(jié)構(gòu)的32位系統(tǒng)占領(lǐng)了32位嵌入式系統(tǒng)的大部分分額，但長期以來，基于ARM體系結(jié)構(gòu)的32位系統(tǒng)僅在嵌入式式系統(tǒng)的高端（通訊領(lǐng)域、PDA）等場合使用，要么以專用芯片的面貌出現(xiàn)，要么以位處理器的廟貌出現(xiàn)，并沒有出現(xiàn)性價(jià)比高的通用的微控制器。PHILIPS發(fā)現(xiàn)了這個(gè)空當(dāng)，推出了性價(jià)比很高LPC2000系列微控制器，讓更多的嵌入式系統(tǒng)具有32位的處理能力。這也預(yù)示著32位系統(tǒng)即將成為嵌入式系統(tǒng)的主流。基于ARM體系結(jié)構(gòu)的芯片在中國推廣已經(jīng)有好幾年了，關(guān)于ARM的圖書也出了不少。關(guān)于ARM的圖書主要有以下幾
3、類：1．關(guān)于ARM內(nèi)核的圖書，主要讀者是芯片設(shè)計(jì)者，內(nèi)容主要是介紹芯片設(shè)計(jì)的。2．芯片應(yīng)用類圖書，主要是芯片的生產(chǎn)商或代理商編寫，主要讀者為應(yīng)用工程師。3．開發(fā)板類圖書，主要介紹相應(yīng)的ARM開發(fā)板，給應(yīng)用者一些參考。以上3類圖書的側(cè)重點(diǎn)都不是ARM應(yīng)用開發(fā)教學(xué)，用于大學(xué)本科教學(xué)不太適合。為了方便高等院校教學(xué)方便，筆者編寫了這本教材。不過，因?yàn)榍度胧较到y(tǒng)牽涉的知識太廣，一本教材無法深入論述。為此，筆者還會推出多本被套圖書以便學(xué)生知識擴(kuò)展。--1廣州周立功單片機(jī)發(fā)展有限公司Tel:(020)38730916387309173873097638730977Fax:3
4、8730925目錄第1章嵌入式系統(tǒng)概述·······························································································11.1嵌入式系統(tǒng)···························································································································11.1.1現(xiàn)實(shí)中的嵌入式系統(tǒng)······················
5、···········································································11.1.2嵌入式系統(tǒng)的概念·····································································································21.1.3嵌入式系統(tǒng)的未來···············································································
6、······················21.2嵌入式處理器·······················································································································21.2.1簡介····························································································································
7、21.2.2分類····························································································································31.3嵌入式操作系統(tǒng)···················································································································41.3.1簡介·················
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