MP3 portable players are the trend in music-listening technology. These players do not includeany mechanical movements, thereby making them ideal for listening to music during any type ofactivity. MP3 is a digital compression technique based on MPEG Layer 3 which stores music ina lot less space than current CD technology. Software is readily available to create MP3 filesfrom an existing CD, and the user can then download these files into a portable MP3 player tobe enjoyed in almost any envirOnment.
上傳時間： 2013-11-23
上傳用戶：nanxia
WP369可擴展式處理平臺-各種嵌入式系統的理想解決方案 ：Delivering unrivaled levels of system performance,flexibility, scalability, and integration to developers,Xilinx's architecture for a new Extensible Processing Platform is optimized for system power, cost, and size. Based on ARM's dual-core Cortex™-A9 MPCore processors and Xilinx’s 28 nm programmable logic,the Extensible Processing Platform takes a processor-centric approach by defining a comprehensive processor system implemented with standard design methods. This approach provides Software Developers a familiar programming envirOnment within an optimized, full featured,powerful, yet low-cost, low-power processing platform.
上傳時間： 2013-10-18
上傳用戶：cursor
Finite state machines are widely used in digital circuit designs. Generally, when designing a state machine using an HDL, the synthesis tools will optimize away all states that cannot be reached and generate a highly optimized circuit. Sometimes, however, the optimization is not acceptable. For example, if the circuit powers up in an invalid state, or the circuit is in an extreme working envirOnment and a glitch sends it into an undesired state, the circuit may never get back to its normal operating condition.
標簽： Creating Machines Mentor State
上傳時間： 2013-11-02
上傳用戶：xauthu
第一部分 信號完整性知識基礎.................................................................................5第一章 高速數字電路概述.....................................................................................51.1 何為高速電路...............................................................................................51.2 高速帶來的問題及設計流程剖析...............................................................61.3 相關的一些基本概念...................................................................................8第二章 傳輸線理論...............................................................................................122.1 分布式系統和集總電路.............................................................................122.2 傳輸線的RLCG 模型和電報方程...............................................................132.3 傳輸線的特征阻抗.....................................................................................142.3.1 特性阻抗的本質.................................................................................142.3.2 特征阻抗相關計算.............................................................................152.3.3 特性阻抗對信號完整性的影響.........................................................172.4 傳輸線電報方程及推導.............................................................................182.5 趨膚效應和集束效應.................................................................................232.6 信號的反射.................................................................................................252.6.1 反射機理和電報方程.........................................................................252.6.2 反射導致信號的失真問題.................................................................302.6.2.1 過沖和下沖.....................................................................................302.6.2.2 振蕩：.............................................................................................312.6.3 反射的抑制和匹配.............................................................................342.6.3.1 串行匹配.........................................................................................352.6.3.1 并行匹配.........................................................................................362.6.3.3 差分線的匹配.................................................................................392.6.3.4 多負載的匹配.................................................................................41第三章 串擾的分析...............................................................................................423.1 串擾的基本概念.........................................................................................423.2 前向串擾和后向串擾.................................................................................433.3 后向串擾的反射.........................................................................................463.4 后向串擾的飽和.........................................................................................463.5 共模和差模電流對串擾的影響.................................................................483.6 連接器的串擾問題.....................................................................................513.7 串擾的具體計算.........................................................................................543.8 避免串擾的措施.........................................................................................57第四章 EMI 抑制....................................................................................................604.1 EMI/EMC 的基本概念..................................................................................604.2 EMI 的產生..................................................................................................614.2.1 電壓瞬變.............................................................................................614.2.2 信號的回流.........................................................................................624.2.3 共模和差摸EMI ..................................................................................634.3 EMI 的控制..................................................................................................654.3.1 屏蔽.....................................................................................................654.3.1.1 電場屏蔽.........................................................................................654.3.1.2 磁場屏蔽.........................................................................................674.3.1.3 電磁場屏蔽.....................................................................................674.3.1.4 電磁屏蔽體和屏蔽效率.................................................................684.3.2 濾波.....................................................................................................714.3.2.1 去耦電容.........................................................................................714.3.2.3 磁性元件.........................................................................................734.3.3 接地.....................................................................................................744.4 PCB 設計中的EMI.......................................................................................754.4.1 傳輸線RLC 參數和EMI ........................................................................764.4.2 疊層設計抑制EMI ..............................................................................774.4.3 電容和接地過孔對回流的作用.........................................................784.4.4 布局和走線規則.................................................................................79第五章 電源完整性理論基礎...............................................................................825.1 電源噪聲的起因及危害.............................................................................825.2 電源阻抗設計.............................................................................................855.3 同步開關噪聲分析.....................................................................................875.3.1 芯片內部開關噪聲.............................................................................885.3.2 芯片外部開關噪聲.............................................................................895.3.3 等效電感衡量SSN ..............................................................................905.4 旁路電容的特性和應用.............................................................................925.4.1 電容的頻率特性.................................................................................935.4.3 電容的介質和封裝影響.....................................................................955.4.3 電容并聯特性及反諧振.....................................................................955.4.4 如何選擇電容.....................................................................................975.4.5 電容的擺放及Layout ........................................................................99第六章 系統時序.................................................................................................1006.1 普通時序系統...........................................................................................1006.1.1 時序參數的確定...............................................................................1016.1.2 時序約束條件...................................................................................1063.2 高速設計的問題.......................................................................................2093.3 SPECCTRAQuest SI Expert 的組件.......................................................2103.3.1 SPECCTRAQuest Model Integrity .................................................2103.3.2 SPECCTRAQuest Floorplanner/Editor .........................................2153.3.3 Constraint Manager .......................................................................2163.3.4 SigXplorer Expert Topology Development envirOnment .......2233.3.5 SigNoise 仿真子系統......................................................................2253.3.6 EMControl .........................................................................................2303.3.7 SPECCTRA Expert 自動布線器.......................................................2303.4 高速設計的大致流程...............................................................................2303.4.1 拓撲結構的探索...............................................................................2313.4.2 空間解決方案的探索.......................................................................2313.4.3 使用拓撲模板驅動設計...................................................................2313.4.4 時序驅動布局...................................................................................2323.4.5 以約束條件驅動設計.......................................................................2323.4.6 設計后分析.......................................................................................233第四章 SPECCTRAQUEST SIGNAL EXPLORER 的進階運用..........................................2344.1 SPECCTRAQuest Signal Explorer 的功能包括：................................2344.2 圖形化的拓撲結構探索...........................................................................2344.3 全面的信號完整性(Signal Integrity)分析.......................................2344.4 完全兼容 IBIS 模型...............................................................................2344.5 PCB 設計前和設計的拓撲結構提取.......................................................2354.6 仿真設置顧問...........................................................................................2354.7 改變設計的管理.......................................................................................2354.8 關鍵技術特點...........................................................................................2364.8.1 拓撲結構探索...................................................................................2364.8.2 SigWave 波形顯示器........................................................................2364.8.3 集成化的在線分析(Integration and In-process Analysis) .236第五章 部分特殊的運用...............................................................................2375.1 Script 指令的使用..................................................................................2375.2 差分信號的仿真.......................................................................................2435.3 眼圖模式的使用.......................................................................................249第四部分：HYPERLYNX 仿真工具使用指南............................................................251第一章 使用LINESIM 進行前仿真.......................................................................2511.1 用LineSim 進行仿真工作的基本方法...................................................2511.2 處理信號完整性原理圖的具體問題.......................................................2591.3 在LineSim 中如何對傳輸線進行設置...................................................2601.4 在LineSim 中模擬IC 元件.....................................................................2631.5 在LineSim 中進行串擾仿真...................................................................268第二章 使用BOARDSIM 進行后仿真......................................................................2732.1 用BOARDSIM 進行后仿真工作的基本方法...................................................2732.2 BoardSim 的進一步介紹..........................................................................2922.3 BoardSim 中的串擾仿真..........................................................................309
上傳時間： 2013-11-07
上傳用戶：aa7821634
Displaying a large bitmap file on a dialog box, in its original size, is quite difficult in the VC++ envirOnment. However, it is possible to display a large bitmap to a predefined area of the dialog by using the StretchBlt( ) function.The major disadvantage of this is that the clarity of the image will be lost. Check out this article for displaying large bitmaps into the desired area of your dialog box in its original size with a scrolling technique used to show the entire bitmap. 滾動顯示位圖 在VC++環境下，在一個對話框中顯示一個原始尺寸的大小的位圖文件相當是困難的。然而,通過使用 StretchBlt()函數一個給定的區域顯示一個大的位圖是可能的。主要的缺點是圖像將會失真。看了這篇通過卷動技術顯示整個位圖技術的文章，你將能夠以它的原始尺寸在給定對話框的區域內顯示一個大位圖。 來源: http://www.codeguru.com/bitmap/ScrollBitmap.html
標簽： Displaying difficult original bitmap
上傳時間： 2014-01-05
上傳用戶：yiwen213
圖書管理系統v1.0是使用JAVA語言開發的解決圖書基本管理的一個應用程序。 該系統能夠實現簡單的圖書和用戶管理，包括添加圖書，刪除圖書，修改圖書信息，添加用戶， 刪除用戶，修改用戶信息，外借圖書，歸還圖書，罰款計算等等。該系統的前臺界面采用JAVA的 SWING開發，具有簡潔美觀的外觀，直觀的用戶使用界面十分方便上手使用；后臺采用MS-ACCESS 數據庫，采用JDBC-ODBC數據庫連結方式，使用前須在控制面板中的數據庫（ODBC）中的用戶 DSN里將ACCESS數據庫文件添加到用戶數據源，數據源名為JLibrary,登陸名稱和密碼設置為空。注意：該程序正常運行需要安裝JAVA運行環境（Java Runtime envirOnment v1.4.1_05）
上傳時間： 2014-01-10
上傳用戶：yd19890720
They have been developed using the AZTEC C86 compiler, and are portable to any other standard C envirOnment. I have tested this code with AZTEC CII for the 8080, and with the C compiler on XENIX 286, and they work fine.
標簽： developed compiler portable standard
上傳時間： 2014-01-05
上傳用戶：lizhen9880
Addfilter is a command-line application which adds and removes filter drivers for a given drive or volume. It is intended to demonstrate how to insert a filter driver into the driver stack of a device. The sample illustrates how to do this by using the SetupDi APIs. The sample works on both x86 and Alpha platforms. It has only been tested in a 32-bit envirOnment. Since Addfilter is not a driver, it does not deal with Plug and Play or Power Management.
標簽： command-line application Addfilter drivers
上傳時間： 2013-12-30
上傳用戶：天誠24
The flpydisk sample is a floppy driver that resides in the directory \\Ntddk\Src\Storage\Fdc\Flpydsk. It is similar to a class driver in that it sits a level above the floppy disk controller in the driver stack, and brokers communication between the application level and the low-level driver. The floppy driver takes commands from the application and then calls routines in the controller which will in turn perform the actual interaction with the device. The sample compiles in 64-bit, but has not been tested in this envirOnment. It is compatible with x86 and Alpha platforms.
標簽： NtddkSrcStorageFdcFlpydsk directory flpydisk resides
上傳時間： 2015-03-30
上傳用戶：龍飛艇
JILRuntime A general purpose, register based virtual machine (VM) that supports object-oriented features, reference counting (auto destruction of data as soon as it is no longer used, no garbage collection), exceptions (handled in C/C++ or virtual machine code) and other debugging features. Objects and functions can be written in virtual machine code, as well as in C or C++, or any other language that can interface to C object code. The VM is written for maximum performance and thus is probably not suitable for embedded systems where a small memory footprint is required. Possible uses of the VM are in game development, scientific research, or to provide a stand-alone, general purpose programming envirOnment.
標簽： object-oriented JILRuntime register supports
上傳時間： 2013-12-23
上傳用戶：cc1015285075
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