The roots of this book were planted about a decade ago. At that time, I became increasingly convinced that wide-area and metropolitan-area networks, where much of my group’s research has been centered at that time, were in good shape. Although research in these fields was (and still is) needed, that’s not where the networking bottleneck seemed to be. Rather, the bottleneck was (and still is in many places) in the access networks, which choked users’ access to information and services. It was clear to me that the long-term solution to that problem has to involve optical fiber access networks.
標(biāo)簽： Networks Optical Access
上傳時(shí)間： 2020-05-31
上傳用戶：shancjb
As a student I did my best to avoid text books – a strange statement for a Professor to make and one that I should clarify before you put this book down; I did my best to avoid text books that did not help me.
標(biāo)簽： Microdevices Ceramic Thick Films MEMS for and
上傳時(shí)間： 2020-06-06
上傳用戶：shancjb
I would like to thank you for purchasing the second edition of “Industrial Network Security,” especially if you are one of the many supporters of the first edition. When the second edition was announced, many people asked me, “why a second edition?” and even more followed that up with, “and why a coauthor?” These ques- tions are harder to answer than you would think.
標(biāo)簽： Industrial Security Network
上傳時(shí)間： 2020-06-07
上傳用戶：shancjb
This manuscript is a partial draft of a book to be published in early 1994 by AddisonWesley (ISBN 0-201-63337-X). Addison-Wesley has given me permission to make drafts of the book available to the Tcl community to help meet the need for introductory documentation on Tcl and Tk until the book becomes available. Please observe the restrictions set forth in the copyright notice above: you’re welcome to make a copy for yourself or a friend but any sort of large-scale reproduction or reproduction for profit requires advance permission from Addison-Wesley
標(biāo)簽： Toolkit
上傳時(shí)間： 2020-07-05
上傳用戶：
It all started rather innocuously. I walked into Dr GT Murthy’s office one fine day, andchanged my life. “Doc” was then the General Manager, Central R&D, of a very largeelectrical company headquartered in Bombay. In his new state-of-the-art electronics center,he had hand-picked some of India’s best engineers (over a hundred already) ever assembledunder one roof. Luckily, he too was originally a Physicist, and that certainly helped me gainsome empathy. Nowadays he is in retirement, but I will always remember him as athoroughly fair, honest and facts-oriented person, who led by example. There were severalthings I absorbed from him that are very much part of my basic engineering persona today.You can certainly look upon this book as an extension of what Doc started many years agoin India … because that’s what it really is! I certainly wouldn’t be here today if I hadn’t metDoc. And in fact, several of the brash, high-flying managers I’ve met in recent years,desperately need some sort of crash course in technology and human values from Doc!
標(biāo)簽： 開關(guān)電源
上傳時(shí)間： 2021-11-23
上傳用戶：
◆無線充電是電子產(chǎn)品“無尾化”進(jìn)程的一部分。搖脫線纜的來縛是消夤電子產(chǎn)業(yè)發(fā)展的必然趨勢(shì)，也是無線互聯(lián)網(wǎng)時(shí)代的自然害求。包抬3G4G等在內(nèi)的無線通信技術(shù)主要麟決了數(shù)據(jù)文互的無線化，而能量傳輸?shù)臒o線化作為“無尾化”發(fā)展趨勢(shì)的重要組織部分，必須通過無線充電技術(shù)來完或。在盤據(jù)傳輸無線化進(jìn)入高湖的今天能量傳的無線化將得到更多的重視。而“無尾化”趨勢(shì)的最終發(fā)展方向則是無線數(shù)據(jù)傳輸和無線能量傳的融合◆無踐充電技術(shù)在消費(fèi)電子領(lǐng)域大有可為，消費(fèi)電子市場(chǎng)下游體量巨大，智能手機(jī)平板電腦，PC以及近期越演越烈的可穿鵡風(fēng)湖為無線充電產(chǎn)品提供了足夠的發(fā)展空間。在智能予機(jī)和乎板電腦增長(zhǎng)呈現(xiàn)疲態(tài)的后智能化時(shí)代，無線充電技術(shù)是各大廠商無法避開的產(chǎn)品創(chuàng)新。而從消費(fèi)者角度講。無線充電技術(shù)在無線互聯(lián)網(wǎng)和智能終端大爆發(fā)的背景下能夠帶來用戶體驗(yàn)的大幅提高?！?。無線充電產(chǎn)業(yè)啟動(dòng)的外部環(huán)境在2014年得到很大改善，根搭 isuppli的預(yù)計(jì)到2015年全球無線充電行業(yè)產(chǎn)值將達(dá)到240億美元，但是其在2013年的滲遺逵度卻遠(yuǎn)低于業(yè)界預(yù)期，主要是成本過高。標(biāo)準(zhǔn)不統(tǒng)一和充電效率不理想這三大固素制了產(chǎn)業(yè)啟動(dòng)。而在2014年，隨著技術(shù)的進(jìn)步以及多模方案的成熱，這些限制概頸將逐一被突破，無線充電產(chǎn)業(yè)發(fā)展的外部環(huán)境將得到很大改善，這就使得產(chǎn)業(yè)啟動(dòng)成為可能巨頭紛紛加入，無線充電產(chǎn)業(yè)有望在2014年迎來?yè)P(yáng)點(diǎn)。不管是在技術(shù)實(shí)力上，還是場(chǎng)號(hào)召力上，行業(yè)巨頭的態(tài)度直接決定了無線充電產(chǎn)業(yè)何時(shí)啟動(dòng)以及以何種方式唇動(dòng)，而在2014年的CEs上，包括me，高通、悔通等在內(nèi)的行業(yè)巨頭，一改此前出聲不出力的做法，開始實(shí)質(zhì)性的加大了對(duì)無線充電技術(shù)的投入力度，各種相關(guān)產(chǎn)品和方袋紛紛亮相。行業(yè)巨頭們的強(qiáng)勢(shì)加入將形成巨大的帶動(dòng)效應(yīng)，推動(dòng)無線充電產(chǎn)業(yè)在2014年實(shí)現(xiàn)實(shí)質(zhì)性啟動(dòng)
標(biāo)簽： 無線充電
上傳時(shí)間： 2022-03-30
上傳用戶：
This example shows how you can use signal functions in the Visiondebugger to simulate a signal that is coming into one of the analog inputs of the LPC21xx.The Measure example is described in detail in the Getting StartedUser's Guide.The MEASURE example program is available for several targets:Simulator: uVision Simulator for LPC2129MCB2100: Keil MCB2100 evaluation board with ULINK debugger - Application is loaded to internal Flash. - Switch S2 (INT1) is used as GPIO and sampled (jumper positions: J1= off, J7= on) - potentiometer POT1 is sampled as AIN0 (jumper position: J2= on) - serial port COM1 parameters: 9600 baud, no parity, 8-bits, 1 stop bit, flow control noneMCB2130: Keil MCB2130 evaluation board with ULINK debugger - Application is loaded to internal Flash. - Switch S2 (INT1) is used as GPIO and sampled (jumper positions: J1= off, J7= on) - potentiometer POT1 is sampled as AIN1 (jumper position: J2= on) - serial port COM1 parameters: 9600 baud, no parity, 8-bits, 1 stop bit, flow control none
標(biāo)簽： dac8568
上傳時(shí)間： 2022-06-28
上傳用戶：
FU6831 是一款集成 8051 內(nèi)核和電機(jī)控制引擎(ME)的電機(jī)驅(qū)動(dòng)專用芯片，8051 內(nèi)核處理常規(guī)事務(wù)，ME 處理電機(jī)實(shí)時(shí)事務(wù)，雙核協(xié)同工作實(shí)現(xiàn)各種高性能電機(jī)控制。其中 8051 內(nèi)核大部分指令周期為 1T 或 2T，芯片內(nèi)部集成有高速運(yùn)算放大器、比較器、Pre-driver、高速 ADC、高速乘/除法器、CRC、SPI、I2C、UART、多種 TIMER、PWM 等功能，內(nèi)置高壓 LDO，適用于 BLDC/PMSM 電機(jī)的方波、SVPWM/SPWM、FOC 驅(qū)動(dòng)控制。預(yù)驅(qū)動(dòng)為 3P3N Predriver 輸出。
標(biāo)簽： fu6831
上傳時(shí)間： 2022-07-09
上傳用戶：
FU6831/11 是一款集成 8051 內(nèi)核和電機(jī)控制引擎(ME)的電機(jī)驅(qū)動(dòng)專用芯片，8051 內(nèi)核處理常規(guī)事務(wù)，ME 處理電機(jī)實(shí)時(shí)事務(wù)，雙核協(xié)同工作實(shí)現(xiàn)各種高性能電機(jī)控制。其中 8051 內(nèi)核大部分指令周期為 1T 或 2T，芯片內(nèi)部集成有高速運(yùn)算放大器、比較器、Pre-driver(FU6811 除外)、高速 ADC、高速乘/除法器、CRC、SPI、I2C、UART、多種 TIMER、PWM 等功能，內(nèi)置高壓 LDO，適用于BLDC/PMSM 電機(jī)的方波、SVPWM/SPWM、FOC 驅(qū)動(dòng)控制。預(yù)驅(qū)動(dòng)類型為：FU6811 為 Gate Driver 輸出；FU6831 為 3P3N Predriver 輸出。
標(biāo)簽： FU6831
上傳時(shí)間： 2022-07-09
上傳用戶：
由于文件較大，附件提供了百度網(wǎng)盤的分享地址和提取碼。打開即可下載或轉(zhuǎn)存。microsoft visio 2016(visio2016)是微軟官方最新發(fā)布的一款領(lǐng)先的圖表解決方案，可以幫助企業(yè)定義流程、編制最佳方案、同時(shí)也是建立可視化計(jì)劃變革的實(shí)用工具。新版本的visio2016為15大最熱門的領(lǐng)域提供了直觀和易于訪問的預(yù)設(shè)模板；比如通過Office 365你可以向任何人分享視頻圖表，并就其中一個(gè)版本進(jìn)行溝通，以保持和推動(dòng)全局的一致性。visio2016提供了上手圖例（starter diagrams）、成百上千的智能形狀、一步數(shù)據(jù)鏈接、以及信息權(quán)限管理（IRM）等功能，可視化工作可以以往更快更輕松。除了上手圖例，visio2016還加入了office 2016上全新的“Tell Me”功能，通過它，用戶可以在導(dǎo)航欄上輕松訪問超過800 Visio命令。visio2016的“新手入門”功能再次經(jīng)歷大幅變動(dòng)，現(xiàn)在操作更加簡(jiǎn)單。對(duì)于新用戶以及不習(xí)慣其豐富工具的用戶來說，Visio圖表顯得有些“嚇人”。visio2016現(xiàn)在通過提供一組篩選后的預(yù)繪制圖表來幫助用戶熟悉該應(yīng)用的核心使用場(chǎng)景，從而讓它顯得更加“平易近人”。visio2016還提供了一些與圖表相關(guān)的操作技巧，幫助用戶順利編輯與完成圖表，Visio已經(jīng)變得比以往更加好用。
標(biāo)簽： microsoft visio
上傳時(shí)間： 2022-08-09
上傳用戶：
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