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電力電子技術是一門新興的應用于電力領域的電子技術,就是使用電力電子器件(如晶閘管,GTO,IGBT等)對電能進行變換和控制的技術。電力電子技術所變換的“電力”功率可大到數(shù)百MW甚至GW,也可以小到數(shù)W甚至1W以下,和以信息處理為主的信息電子技術不同電力電子技術主要用于電力變換。簡介電力電子技術分為電力電子器件..
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摘要:軟土路基的加固有很多種方法,本文對常用的幾種方法從加以解釋對其加固機理,作用,作用范圍以及個別的工程實例的闡述.新型的加固材料以及新工藝的開發(fā)和利用對提高軟土路基的加固技術水平所起的重要作用等做以簡單的闡述.在道路工程中經(jīng)常會遇到軟土路基,由于高速公路、高速鐵路的發(fā)展,對地基的承載能力要求越來..
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LED (Light Emitting Diode), light-emitting diode, is a solid state semiconductor devices, which can be directly converted into electricity to light. LED is the heart of a semiconductor chip, the chip is attached to one end of a stent, is the negative side, the other end of the power of the cathod..
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單片機也被稱為微控制器(Microcontroller Unit),常用英文字母的縮寫MCU表示單片機,它最早是被用在工業(yè)控制領域。單片機由芯片內僅有CPU的專用處理器發(fā)展而來。最早的設計理念是通過將大量外圍設備和CPU集成在一個芯片中,使計算機系統(tǒng)更小,更容易集成進復雜的而對體積要求嚴格的控制設備當中。INTEL的Z80是最早按照..
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SCM is also known as micro-controller (Microcontroller Unit), commonly used letters of the acronym MCU MCU that it was first used in industrial control. Only a single chip by the CPU chip developed from a dedicated processor. The first design is by a large number of peripherals and CPU on a chip..
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1 General DescriptionThe AT89S51 is a low-power, high-performance CMOS 8-bit microcontroller with 4K bytes of In-System Programmable Flash memory. The device is manufactured using Atmel’s high-density nonvolatile memory technology and is compatible with the industry-standard 80C51 instruction se..
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JSP技術發(fā)展史Java Server Pages(JSP)是一種基于web的腳本編程技術,類似于網(wǎng)景公司的服務器端Java腳本語言—— server-side JavaScript(SSJS)和微軟的Active Server Pages(ASP)。JSP比SSJS和ASP具有更好的可擴展性,并且它不專屬于任何一家廠商或某一特定的Web服務器。盡管JSP規(guī)范是由Sun公司制定的,但任何廠商都可以..
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單片機是指一個集成在一塊芯片上的完整計算機系統(tǒng)。盡管他的大部分功能集成在一塊小芯片上,但是它具有一個完整計算機所需要的大部分部件:CPU、內存、內部和外部總線系統(tǒng),目前大部分還會具有外存。同時集成諸如通訊接口、定時器,實時時鐘等外圍設備。而現(xiàn)在最強大的單片機系統(tǒng)甚至可以將聲音、圖像、網(wǎng)絡、復雜的輸入..
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1.1 ARM-Advanced RISC MachinesARM- Advanced RISC Machines is thought to be a company name, can be considered to be a type known as the microprocessor, can be considered a technical name.ARM company was established in Cambridge in 1991, It mainly sales mandate of chip design technology. At presen..