附件有二個文當(dāng),都是dxp2004教程 ,第一部份DXP2004的相關(guān)快捷鍵,以及中英文對照的意思。第二部份細(xì)致的講解的如何使用DXP2004。 dxp2004教程第一部份: 目錄 1 快捷鍵 2 常用元件及封裝 7 創(chuàng)建自己的集成庫 12 板層介紹 14 過孔 15 生成BOM清單 16 頂層原理圖: 16 生成PCB 17 包地 18 電路板設(shè)計規(guī)則 18 PCB設(shè)計注意事項 20 畫板心得 22 DRC 規(guī)則英文對照 22 一、Error Reporting 中英文對照 22 A : Violations Associated with Buses 有關(guān)總線電氣錯誤的各類型(共 12 項) 22 B :Violations Associated Components 有關(guān)元件符號電氣錯誤(共 20 項) 22 C : violations associated with document 相關(guān)的文檔電氣錯誤(共 10 項) 23 D : violations associated with nets 有關(guān)網(wǎng)絡(luò)電氣錯誤(共 19 項) 23 E : Violations associated with others 有關(guān)原理圖的各種類型的錯誤 (3 項 ) 24 二、 Comparator 規(guī)則比較 24 A : Differences associated with components 原理圖和 PCB 上有關(guān)的不同 ( 共 16 項 ) 24 B : Differences associated with nets 原理圖和 PCB 上有關(guān)網(wǎng)絡(luò)不同(共 6 項) 25 C : Differences associated with parameters 原理圖和 PCB 上有關(guān)的參數(shù)不同(共 3 項) 25 Violations Associated withBuses欄 —總線電氣錯誤類型 25 Violations Associated with Components欄 ——元件電氣錯誤類型 26 Violations Associated with documents欄 —文檔電氣連接錯誤類型 27 Violations Associated with Nets欄 ——網(wǎng)絡(luò)電氣連接錯誤類型 27 Violations Associated with Parameters欄 ——參數(shù)錯誤類型 28 dxp2004教程第二部份 路設(shè)計自動化( Electronic Design Automation ) EDA 指的就是將電路設(shè)計中各種工作交由計算機(jī)來協(xié)助完成。如電路圖( Schematic )的繪制,印刷電路板( PCB )文件的制作執(zhí)行電路仿真( Simulation )等設(shè)計工作。隨著電子工業(yè)的發(fā)展,大規(guī)模、超大規(guī)模集成電路的使用是電路板走線愈加精密和復(fù)雜。電子線路 CAD 軟件產(chǎn)生了, Protel 是突出的代表,它操作簡單、易學(xué)易用、功能強(qiáng)大。 1.1 Protel 的產(chǎn)生及發(fā)展 1985 年 誕生 dos 版 Protel 1991 年 Protel for Widows 1998 年 Protel98 這個 32 位產(chǎn)品是第一個包含 5 個核心模塊的 EDA 工具 1999 年 Protel99 既有原理圖的邏輯功能驗證的混合信號仿真,又有了 PCB 信號完整性 分析的板級仿真,構(gòu)成從電路設(shè)計到真實板分析的完整體系。 2000 年 Protel99se 性能進(jìn)一步提高,可以對設(shè)計過程有更大控制力。 2002 年 Protel DXP 集成了更多工具,使用方便,功能更強(qiáng)大。 1.2 Protel DXP 主要特點 1 、通過設(shè)計檔包的方式,將原理圖編輯、電路仿真、 PCB 設(shè)計及打印這些功能有機(jī)地結(jié)合在一起,提供了一個集成開發(fā)環(huán)境。 2 、提供了混合電路仿真功能,為設(shè)計實驗原理圖電路中某些功能模塊的正確與否提供了方便。 3 、提供了豐富的原理圖組件庫和 PCB 封裝庫,并且為設(shè)計新的器件提供了封裝向?qū)С绦颍喕朔庋b設(shè)計過程。 4 、提供了層次原理圖設(shè)計方法,支持“自上向下”的設(shè)計思想,使大型電路設(shè)計的工作組開發(fā)方式成為可能。 5 、提供了強(qiáng)大的查錯功能。原理圖中的 ERC (電氣法則檢查)工具和 PCB 的 DRC (設(shè)計規(guī)則檢查)工具能幫助設(shè)計者更快地查出和改正錯誤。 6 、全面兼容 Protel 系列以前版本的設(shè)計文件,并提供了 OrCAD 格式文件的轉(zhuǎn)換功能。 7 、提供了全新的 FPGA 設(shè)計的功能,這好似以前的版本所沒有提供的功能。
上傳時間: 2015-01-01
上傳用戶:zhyfjj
介紹了以PLC為控制單元,變頻器為執(zhí)行單元的控制系統(tǒng)及其在煙支輸送儲存系統(tǒng)中的應(yīng)用,并給出了系統(tǒng)的組成、硬件的配置及具體的實現(xiàn)方法。關(guān)鍵詞 : PLC 變頻器輸送儲存系統(tǒng) Ab str ac t;T hisp aperi ntroducest hec ontrols ystem whichc onsistso fP LCa ndf requencyc onvertera ndi ts application in the buffer conveyor for cigarettes. The system constitute, hardware disposal and realization method are also presented in detail.Keywords:PLC f requencyc onverter b ufferc onveyor
標(biāo)簽: PLC 變頻器 中的應(yīng)用 存儲系統(tǒng)
上傳時間: 2013-10-22
上傳用戶:ouyang426
Description: S-ISOMAP is a manifold learning algorithm, which is a supervised variant of ISOMAP. Reference: X. Geng, D.-C. Zhan, and Z.-H. Zhou. Supervised nonlinear dimensionality reduction for visualization and classification. IEEE Transactions on Systems, Man, and Cybernetics - Part B: Cybernetics, 2005, vol.35, no.6, pp.1098-1107.
標(biāo)簽: Description supervised algorithm S-ISOMAP
上傳時間: 2015-04-10
上傳用戶:wfeel
mp3設(shè)計程序資料,采用c語言編寫。 README file for yampp-3 source code 2001-05-27 This is the current state of the yampp-3 source code, 2001-05-27. This code is intended to run on Rev. B of the yampp-3 PCB, but can ofcourse be used on compatible systems as well. It still uses the "old" song selection system as the yampp-2. However, the disk handling routines has improved a lot and the obviosly, the new VS1001 handling has been put in. The codesize is almost at it s maximum at 1F40 bytes. A .ROM file is included if you don t have the compiler set up. For now, the documentation is in the code
上傳時間: 2015-04-13
上傳用戶:小碼農(nóng)lz
假近鄰法(False Nearest Neighbor, FNN)計算嵌入維的Matlab程序 文件夾說明: Main_FNN.m - 程序主函數(shù),直接運行此文件即可 LorenzData.dll - 產(chǎn)生Lorenz時間序列 PhaSpaRecon.m - 相空間重構(gòu) fnn_luzhenbo.dll - 假近鄰計算主函數(shù) SearchNN.dll - 近鄰點搜索 buffer_SearchNN_1.dll - 近鄰點搜索緩存1 buffer_SearchNN_2.dll - 近鄰點搜索緩存2 參考文獻(xiàn): M.B.Kennel, R.Brown, H.D.I.Abarbanel. Determining embedding dimension for phase-space reconstruction using a geometrical construction[J]. Phys. Rev. A 1992,45:3403.
標(biāo)簽: Main_FNN Neighbor Nearest Matlab
上傳時間: 2013-12-10
上傳用戶:songnanhua
Program to simulate Rayleigh fading using a p-th order autoregressive model AR(p) according to % Baddour s work: "Autoregressive modeling for fading channel simulation"
標(biāo)簽: autoregressive according simulate Rayleigh
上傳時間: 2013-12-02
上傳用戶:tb_6877751
1、 了解系統(tǒng)調(diào)用fork()、execl()、exit()、getpid()和waitpid()的功能和實現(xiàn)過程 2、 編寫一段程序?qū)崿F(xiàn)以下功能: a) 使用系統(tǒng)調(diào)用fork()創(chuàng)建兩個子進(jìn)程 b) 父進(jìn)程重復(fù)顯示字符串”parent:”,并使用函數(shù)getpid()顯示自己的進(jìn)程ID。 c) 兩個子進(jìn)程分別重復(fù)顯示字符串”child:”,并使用函數(shù)getpid()顯示自己的進(jìn)程ID 3、 編寫一段程序?qū)崿F(xiàn)以下功能: a) 使用系統(tǒng)調(diào)用fork()創(chuàng)建一個子進(jìn)程 b) 子進(jìn)程顯示自己的進(jìn)程ID和字符串": The child is calling an exec.\n",然后通過execl()調(diào)用系統(tǒng)命令ps顯示當(dāng)前運行的進(jìn)程情況,從而更換自己的執(zhí)行代碼,最后調(diào)用exit()結(jié)束。 c) 父進(jìn)程顯示自己的進(jìn)程ID和字符串” ": The parent is waiting for child to exit.\n ",然后調(diào)用waitpid()等待子進(jìn)程結(jié)束,并在子進(jìn)程結(jié)束后顯示”The parent exit.\n
標(biāo)簽: fork waitpid getpid execl
上傳時間: 2013-12-18
上傳用戶:葉山豪
This section contains a brief introduction to the C language. It is intended as a tutorial on the language, and aims at getting a reader new to C started as quickly as possible. It is certainly not intended as a substitute for any of the numerous textbooks on C. 2. write a recursive function FIB (n) to find out the nth element in theFibanocci sequence number which is 1,1,2,3,5,8,13,21,34,55,…3. write the prefix and postfix form of the following infix expressiona + b – c / d + e * f – g * h / i ^ j4. write a function to count the number of nodes in a binary tr
標(biāo)簽: introduction the contains intended
上傳時間: 2013-12-23
上傳用戶:liansi
by Randal L. Schwartz and Tom Phoenix ISBN 0-596-00132-0 Third Edition, published July 2001. (See the catalog page for this book.) the text of Learning Perl, 3rd Edition. Table of Contents Copyright Page Preface Chapter 1: Introduction Chapter 2: Scalar Data Chapter 3: Lists and Arrays Chapter 4: Subroutines Chapter 5: Hashes Chapter 6: I/O Basics Chapter 7: Concepts of Regular Expressions Chapter 8: More About Regular Expressions Chapter 9: Using Regular Expressions Chapter 10: More Control Structures Chapter 11: Filehandles and File Tests Chapter 12: Directory Operations Chapter 13: Manipulating Files and Directories Chapter 14: Process Management Chapter 15: Strings and Sorting Chapter 16: Simple Databases Chapter 17: Some Advanced Perl Techniques Appendix A: Exercise Answers Appendix B: Beyond the Llama Index Colophon
標(biāo)簽: L. published Schwartz Edition
上傳時間: 2014-11-29
上傳用戶:kr770906
by Randal L. Schwartz and Tom Phoenix ISBN 0-596-00132-0 Third Edition, published July 2001. (See the catalog page for this book.) Learning Perl, 3rd Edition. Table of Contents Copyright Page Preface Chapter 1: Introduction Chapter 2: Scalar Data Chapter 3: Lists and Arrays Chapter 4: Subroutines Chapter 5: Hashes Chapter 6: I/O Basics Chapter 7: Concepts of Regular Expressions Chapter 8: More About Regular Expressions Chapter 9: Using Regular Expressions Chapter 10: More Control Structures Chapter 11: Filehandles and File Tests Chapter 12: Directory Operations Chapter 13: Manipulating Files and Directories Chapter 14: Process Management Chapter 15: Strings and Sorting Chapter 16: Simple Databases Chapter 17: Some Advanced Perl Techniques Appendix A: Exercise Answers Appendix B: Beyond the Llama Index Colophon
標(biāo)簽: L. published Schwartz Edition
上傳時間: 2015-09-03
上傳用戶:lifangyuan12
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