<table id="4om4u"></table> It has been suggested1 that an appropriate figure of merit for a low probability of intercept and detection (LPI/D) waveform is the quantity “Range x Bandwidth / Joule”. That is, the further the range, the wider the bandwidth and the less amount of energy used to achieve these values, the more covert is the resultant communications system.
標(biāo)簽： appropriate probability suggested1 intercept
上傳時間： 2017-01-03
上傳用戶：kr770906
The basic principle using the branchand- bound strategy to solve the traveling salesperson optimization problem (TSP) consists of two parts. There is a way to split the solution space. There is a way to predict a lower bound for a class of solutions. There is also a way to find an upper bound of an optimal solution. If the lower bound of a solution exceeds this upper bound, this solution cannot be optimal. Thus, we should terminate the branching associated with this solution.
標(biāo)簽： salesperson principle branchand the
上傳時間： 2017-02-19
上傳用戶：comua
The SP486 and SP487 are low–power quad differential line drivers meeting RS-485 and RS-422 standards. The SP486 features a common driver enable control the SP487 provides independent driver enable controls for each pair of drivers. Both feature tri–state outputs and wide common–mode input range. Both are available in 16–pin plastic DIP and SOIC packages.
標(biāo)簽： differential and standard drivers
上傳時間： 2014-01-13
上傳用戶：tianyi223
PowerPCB教程簡介 歡迎使用 PowerPCB 教程。本教程描述了PADS-PowerPCB 的絕大部分功能 和特點，以及使用的各個過程，這些功能包括： · 基本操作 · 建立元件(Component) · 建立板子邊框線(Board outline) · 輸入網(wǎng)表(Netlist) · 設(shè)置設(shè)計規(guī)則(Design Rule) ·元件(Part)的布局(Placement) · 手工和交互的布線 · SPECCTRA全自動布線器(Route Engine) ·覆銅(Copper Pour) · 建立分隔/混合平面層(Split/mixed Plane) · Microsoft 的目標(biāo)連接與嵌入(OLE)(Object Linking Embedding) · 可選擇的裝配選件(Assembly options) · 設(shè)計規(guī)則檢查(Design Rule Check) · 反向標(biāo)注(Back Annotation) · 繪圖輸出(Plot Output) 使用本教程后，你可以學(xué)到印制電路板設(shè)計和制造的許多基本知識。 你不必一次完成整個教程，如果在任何時候退出后，下次直接找到你要進(jìn)入 的部分，繼續(xù)學(xué)習(xí)本教程。 當(dāng)你完成了本教程的學(xué)習(xí)后，可以參考在線幫助(On-line Help)以便得到更多 的信息。如果你需要附加的信息內(nèi)容，你可以與PADS 在各地辦事處或代理商取 得聯(lián)系，以便得到更多的幫助。 歡迎使用PowerPCB進(jìn)行PCB設(shè)計！
標(biāo)簽： PowerPCB PADS-PowerPCB 教程 分
上傳時間： 2013-12-12
上傳用戶：caozhizhi
The CSS Cookbook cuts straight through the theory to provide hundreds of useful examples and CSS code recipes you can use immediately to format your web pages. Reflecting CSS2 and including topics that range from basic web typography and page layout to techniques for formatting lists, forms, and tables, the CSS Cookbook is a must-have resource for any web author who has even considered using CSS.
標(biāo)簽： CSS Cookbook straight hundreds
上傳時間： 2013-12-21
上傳用戶：sjyy1001
Modern, large scale, display systems are migrating from traditional technologies such as incandescent, fluorescent and mechanical to sophisticated products based on LEDs. LED displays offer power savings and a superior visual experience in a range of products from programmable signage to large-scale video displays and commercial installations.
標(biāo)簽： technologies traditional incandesc migrating
上傳時間： 2013-12-19
上傳用戶：cursor
Enhanced version of the Serial Peripheral Interface available on Motorola s MC68HC11 family of CPUs.Enhancements include a wider supported operating frequency range, 4deep read and write fifos, and programmable transfer count dependent interrupt generation. As with the SPI found in MC68HC11 processors the core features programmable clock phase [CPHA] and clock polarity [CPOL]. The core features an 8bit wishbone interface. Very simple, very small.
標(biāo)簽： Peripheral Interface available Enhanced
上傳時間： 2014-12-06
上傳用戶：invtnewer
Creating barcodes in Microsoft廬 Office has never been easier. With BarCodeWiz Toolbar you can add barcodes to Microsoft廬 Office applications with a click of a button. In Microsoft廬 Word, create single barcodes, pages of labels, or mail merge documents. In Microsoft廬 Excel廬, select a range of cells and automatically convert each cell to a barcode. In Microsoft廬 Access廬, create reports with barcodes based on your data tables.
標(biāo)簽： BarCodeWiz Microsoft Creating barcodes
上傳時間： 2013-12-18
上傳用戶：asddsd
DESCRIPTION The DCP0105 family is a series of high efficiency, 5V input isolated DC/DC converters. In addition to 1W nominal galvanically isolated output power capability, the range of DC/DCs are also fully synchronizable. The devices feature thermal shutdown, and overload protection is implemented via watchdog circuitry. Advanced power-on reset techniques give superior reset performance and the devices will start into any capacitive load up to full power output. The DCP0105 family is implemented in standard- molded IC packaging, giving outlines suitable for high volume assembly.
標(biāo)簽： DESCRIPTION efficiency converters isolated
上傳時間： 2013-11-28
上傳用戶：CHENKAI
在網(wǎng)絡(luò)安全中經(jīng)常會遇到rootkit，NSA安全和入侵檢測術(shù)語字典( NSA Glossary of Terms Used in Security and Intrusion Detection)對rootkit的定義如下：A hacker security tool that captures passwords and message traffic to and from a computer. A collection of tools that allows a hacker to provide a backdoor into a system, collect information on other systems on the network,mask the fact that the system is compromised, and much more. Rootkit is a classic example of Trojan Horse software. Rootkit is available for a wide range of operating systems.
標(biāo)簽： rootkit 網(wǎng)絡(luò)安全
上傳時間： 2017-04-04
上傳用戶：xaijhqx
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