linux在嵌入式的應(yīng)用外文翻譯-其他專業(yè)-資料下載頁
2025-01-19 06:42本頁面
【導(dǎo)讀】因其復(fù)雜且神秘的命令而受到另一些人的藐視。在計(jì)算世界里，UNIX已建立起。一個(gè)褒義不一的聲譽(yù)。些命令每個(gè)都有很多命令行開關(guān)，這可能造成昏藥而不易記憶。擁有2021多個(gè)命令，其中很多功能可通過管道和重定向進(jìn)行組合。復(fù)雜的命令行語法和由此而得到的靈活性被看作一個(gè)優(yōu)點(diǎn)而不是問題。UNIX的原本（或腳本）語言提供某種形式的幫助。理員能很快地把系統(tǒng)裁剪成滿足一組用戶的需求。與多數(shù)操作系統(tǒng)源碼相比，UNIX程序容易移植。匯編語言，使用UNIX能移植到不同的體系結(jié)構(gòu)上。然而，商用實(shí)時(shí)操作系統(tǒng)，雖然設(shè)計(jì)成滿足嵌入式應(yīng)。幸運(yùn)的是，一種新的、令人興奮的選擇系統(tǒng)已經(jīng)出現(xiàn)：開放源碼Linux。支持范例，在那里數(shù)以千計(jì)的開發(fā)人員繼續(xù)貢獻(xiàn)于不斷發(fā)展的Linux代碼庫。約束，嵌入的Linux的主要任務(wù)是，使系統(tǒng)所需的資源最小。許多嵌入式系統(tǒng)需要對現(xiàn)實(shí)世界的一些事件可預(yù)測，并且受限響應(yīng)。Linux的系統(tǒng)，最通常的方法是雙內(nèi)核方法。運(yùn)行作為實(shí)時(shí)內(nèi)核的一個(gè)任務(wù)。
【正文】 e of the display and the keyboard ( headless operation ) environment, or by the Ether connection, from a remote device in application. Small readymade Linux has many sources, including the increasing application oriented Linux configuration and distribution, these are modified into adapted to specific application. For example, router, firewall, Inter / work equipment, work server, gateway. You may also choose to build your own like embedded Linux, from a standard distribution version, omitting don39。t module. Even so, also should be taken from the work of others on the basis of the allocation to begin your work, because their version of the source is perfectly legal, but also be encouraged. Real time Linux Many embedded systems need to realworld events can be predicted, and limited response. Such a system include factory automation, data acquisition and control system, audio / video applications, as well as many other puter products and equipment. What is real time system? The generally accepted realtime performance is defined, the real world time must be identified, predictable, and within a relatively short time interval in response. Although Linux is not a realtime operating system ( Linux cores do not provide the required priority and preemption features ), but currently a few expansion options available, these options to bring realtime ability based on Linux system, the most mon method is the double kernel method. Using this method, the general ( real time) OS running as a realtime kernel of a task. General purpose operating system such as disk read / write, LAN / munication, serial / parallel I / O, system initialization, memory management functions, and the realtime kernel processing period of world events. You can see this as both, because it maintains the popular general operating system benefits, and increasing the realtime ability of OS. Linux, you can keep with the standard Linux patibility, and non interference mode adds realtime function. Of course, also can inquiry and modify Linux, change into a realtime operating system, because it is the source of publicly available, but if you do, you will face such serious shortings, namely whether characteristics, or the driver can not synchronize with the mainstream Linux. Jane39。s words, you will not make Linux from Linux development benefit, but this progress is within the scope of the world thousands of developers to collaborate on results. Linux is an operating system, it play of puter system hardware and software munication service, the Linux kernel contains the operating system you in any desired all properties.
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