|Introduction Basic Concept Tips to layout Power circuit Type of Power circuit Basic Concept Maximum Current calculation Resistance of Copper ideal power supply & noise Capacitor & Inductor Power consumption Function of power circuit
上傳時間： 2013-12-10
上傳用戶：JIEWENYU
This document provides practical, common guidelines for incorporating PCI Express interconnect layouts onto Printed Circuit Boards (PCB) ranging from 4-layer desktop baseboard designs to 10- layer or more server baseboard designs. Guidelines and constraints in this document are intended for use on both baseboard and add-in card PCB designs. This includes interconnects between PCI Express devices located on the same baseboard (chip-to-chip routing) and interconnects between a PCI Express device located “down” on the baseboard and a device located “up” on an add-in card attached through a connector. This document is intended to cover all major components of the physical interconnect including design guidelines for the PCB traces, vias and AC coupling capacitors, as well as add-in card edge-finger and connector considerations. The intent of the guidelines and examples is to help ensure that good high-speed signal design practices are used and that the timing/jitter and loss/attenuation budgets can also be met from end-to-end across the PCI Express interconnect. However, while general physical guidelines and suggestions are given, they may not necessarily guarantee adequate performance of the interconnect for all layouts and implementations. Therefore, designers should consider modeling and simulation of the interconnect in order to ensure compliance to all applicable specifications. The document is composed of two main sections. The first section provides an overview of general topology and interconnect guidelines. The second section concentrates on physical layout constraints where bulleted items at the beginning of a topic highlight important constraints, while the narrative that follows offers additional insight.
上傳時間： 2014-01-24
上傳用戶：s363994250
pcb layout時，可以參照這些資料，介紹PCB布線以及畫PCB時的一些常用規則，畫出一塊優質的PCB，當然，按照實際需要，也可以自由變通這是一個完整的PCB Layout設計規則,文章從元器件的布局到元件排列,再到導線布線,以及線寬及間距這些,還有的是焊盤,都做了詳細的分析以下是詳細內容：
標簽： pcb_layout 走線
上傳時間： 2013-11-10
上傳用戶：cx111111
工程技術上所謂的制冷，就是使某一系統（即空間或物體）的溫度低于周圍環境介質的溫度，并維持這個低溫的過程，這里所說的環境介質是指自然界的空氣和水。制冷與空調設備以流體（氣體與液體的總稱）作為載能物質，實現熱能與其它形式能量（主要為機械能）之間的轉換或熱能的轉移。本章介紹流體的性質、熱能與機械能之間的轉換規律和熱量的傳遞規律，這些知識是空調技術必不可少的理論基礎。
標簽： 制冷技術
上傳時間： 2013-11-08
上傳用戶：huyiming139
PCB設計軟件，設計好了pcb，就可以進行pcb打樣做產品了。
標簽： Sprint-Layout PCB 50 設計軟件
上傳時間： 2013-11-25
上傳用戶：weixiao99
除了上面提到的壓縮方法，你也可以調用VB的工具MakeCab.exe（在VB5\setupkit\kitfil32或VB98\Wizards\PDWizard目錄下）生成.cab文件。先構造一個Directive 文件(*.ddf)，然后使用Shell命令調用MakeCAB /f excel.ddf就可以生成*.cab文件。關于Directive 文件的格式，可以參考MSDN Library中的《MakeCAB: A Compression and Disk Layout Tool》一文。
標簽：
上傳時間： 2015-03-23
上傳用戶：zhengjian
This article is a very simple introduction writing a Windows Form application for the Microsoft.NET framework using C#. The sample application demonstrates how to create and layout controls on a simple form and the handling of mouse click events. The application displays a form showing attributes of a file. This form is similar to the properties dialog box of a file (Right click on a file and Click on Properties menu item). Since attributes of a file will be shown, the sample will show how to use File IO operations in .NET framework.
標簽： introduction application Microsoft article
上傳時間： 2015-04-09
上傳用戶：www240697738
物流分析工具包。Facility location: Continuous minisum facility location, alternate location-allocation (ALA) procedure, discrete uncapacitated facility location Vehicle routing: VRP, VRP with time windows, traveling salesman problem (TSP) Networks: Shortest path, min cost network flow, minimum spanning tree problems Geocoding: U.S. city or ZIP code to longitude and latitude, longitude and latitude to nearest city, Mercator projection plotting Layout: Steepest descent pairwise interchange (SDPI) heuristic for QAP Material handling: Equipment selection General purpose: Linear programming using the revised simplex method, mixed-integer linear programming (MILP) branch and bound procedure Data: U.S. cities with populations of at least 10,000, U.S. highway network (Oak Ridge National Highway Network), U.S. 3- and 5-digit ZIP codes
標簽： location location-allocation Continuous alternate
上傳時間： 2015-05-17
上傳用戶：kikye
Excel導入導出:This TscExcelExport component is an advanced, powerfull but easy component to export all records of a dataset from Delphi to MS Excel (97, 2000, XP or 2003). Many features are provided to change the layout, to add totals, to create groups,
標簽： component TscExcelExport powerfull advanced
上傳時間： 2014-01-16
上傳用戶：Divine
中文名：Windows Forms 程序設計 英文名：Windows Forms Programming in c# 作者： Chris Sells 翻譯： 榮耀 蔣賢哲 出版社：人民郵電出版社 代碼內容： The Table of Contents * Foreword * Preface * Chapter 1 Hello, Windows Forms * Chapter 2 Forms * Chapter 3 Dialogs * Chapter 4 Layout * Chapter 5 Drawing Basics * Chapter 6 Drawing Text * Chapter 7 Advanced Drawing * Chapter 8 Printing * Chapter 9 Components * Chapter 10 Controls * Chapter 11 Design-Time Integration: The Properties Window * Chapter 12 Design-Time Integration: Designers and Smart Tags * Chapter 13 Resources * Chapter 14 Applications * Chapter 15 Settings * Chapter 16 Data Binding Basics * Chapter 17 Applied Data Binding * Chapter 18 Multithreaded User Interfaces * Chapter 19 ClickOnce Deployment * Appendix A Whats New in Windows Forms 2.0 * Appendix C Delegates and Events * Appendix D Component and Control Survey * Appendix E Drag and Drop * Appendix F Document Management * Bibliography * Index
標簽： Windows Forms Programming Chris
上傳時間： 2013-12-03
上傳用戶：啊颯颯大師的
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