PCB LAYOUT技術(shù)大全---初學(xué)者必看! PROTEL相關(guān)疑問(wèn) 1.原理圖常見(jiàn)錯(cuò)誤: (1)ERC報(bào)告管腳沒(méi)有接入信號(hào): a. 創(chuàng)建封裝時(shí)給管腳定義了I/O屬性; b.創(chuàng)建元件或放置元件時(shí)修改了不一致的grid屬性,管腳與線沒(méi)有連上; c. 創(chuàng)建元件時(shí)pin方向反向,必須非pin name端連線。 (2)元件跑到圖紙界外:沒(méi)有在元件庫(kù)圖表紙中心創(chuàng)建元件。 (3)創(chuàng)建的工程文件網(wǎng)絡(luò)表只能部分調(diào)入pcb:生成netlist時(shí)沒(méi)有選擇為global。 (4)當(dāng)使用自己創(chuàng)建的多部分組成的元件時(shí),千萬(wàn)不要使用annotate. 2.PCB中常見(jiàn)錯(cuò)誤: (1)網(wǎng)絡(luò)載入時(shí)報(bào)告Node沒(méi)有找到: a. 原理圖中的元件使用了pcb庫(kù)中沒(méi)有的封裝; b. 原理圖中的元件使用了pcb庫(kù)中名稱不一致的封裝; c. 原理圖中的元件使用了pcb庫(kù)中pin number不一致的封裝。如三極管:sch中pin number 為e,b,c, 而pcb中為1,2,3。
上傳時(shí)間: 2013-10-20
上傳用戶:kbnswdifs
This article is based in part on Bob Place s ADO is AOK (a simple ADO tutorial). Wrapper Usage This is consist of 2 classes. CDyndb : This Class manages connections and recordsets. Recordsets are organized as linked list (CList) and you can access them using their ids. CDynRec : This class is the Node to populate for each recordsets. ADO封裝器類 這篇文章一部分基于Bob Place的《ADO is AOK》 (簡(jiǎn)單的ADO指導(dǎo)) 。 包裹的用法 由2個(gè)類組成。 類CDyndb: 這個(gè)類別管理連接和記錄集。記錄集是連接起來(lái)的記錄的集合,你可以通過(guò)他們的ID訪問(wèn)他們。 類CDynRec: 這個(gè)類別存放記錄集的代碼。
標(biāo)簽: This ADO tutorial article
上傳時(shí)間: 2013-12-14
上傳用戶:wfl_yy
本軟件為綠色軟件,解壓縮后可以直接運(yùn)行,特別方便存于閃存中,使用時(shí)可直接點(diǎn)擊Node.exe打開(kāi)。 備份資料只需要備份data目錄,軟件升級(jí)只需要升級(jí)web目錄。
上傳時(shí)間: 2015-03-01
上傳用戶:wsf950131
Although there has been a lot of AVL tree libraries available now, nearly all of them are meant to work in the random access memory(RAM). Some of them do provide some mechanism for dumping the whole tree into a file and loading it back to the memory in order to make data in that tree persistent. It serves well when there s just small amount of data. When the tree is somewhat bigger, the dumping/loading process could take a lengthy time and makes your mission-critical program less efficient. How about an AVL tree that can directly use the disk for data storage ? If there s something like that, we won t need to read through the whole tree in order to pick up just a little bit imformation(a Node), but read only the sectors that are neccssary for locating a certain Node and the sectors in which that Node lies. This is my initial motivation for writing a storage-media independent AVL Tree. However, as you step forth, you would find that it not only works fine with disks but also fine with memorys, too.
標(biāo)簽: available libraries Although nearly
上傳時(shí)間: 2014-01-22
上傳用戶:zhoujunzhen
MIB Browser allows you to view the hierarchy of SNMP MIB variables in the form of a tree and provides you with additional information about each Node. With MIB Browser you can easily load (compile) standard and proprietary MIB files, view and manipulate data that is available in an SNMP agent.
標(biāo)簽: MIB the hierarchy variables
上傳時(shí)間: 2015-06-30
上傳用戶:eclipse
//Basic packet sending test at the MAC level, used for internal testing only. //This packet test has one Node sending out a variety of //differently formatted packets to two assumed destination Nodes.
標(biāo)簽: packet test internal sending
上傳時(shí)間: 2014-08-21
上傳用戶:CSUSheep
The Staged Event-Driven Architecture (SEDA) is a new design for building scalable Internet services. SEDA has three major goals: To support massive concurrency, on the order of tens of thousands of clients per Node To exhibit robust performance under wide variations in load and, To simplify the design of complex Internet services. SEDA decomposes a complex, event-driven application into a set of stages connected by queues. This design avoids the high overhead associated with thread-based concurrency models, and decouples event and thread scheduling from application logic. SEDA enables services to be well-conditioned to load, preventing resources from being overcommitted when demand exceeds service capacity. Decomposing services into a set of stages also enables modularity and code reuse, as well as the development of debugging tools for complex event-driven applications.
標(biāo)簽: Event-Driven Architecture Internet building
上傳時(shí)間: 2015-09-28
上傳用戶:日光微瀾
2.[問(wèn)題描述] 編寫(xiě)遞歸算法,在二叉樹(shù)中求位于先序序列中第K個(gè)位置的結(jié)點(diǎn) [輸入] 按照先序序列的順序輸入該結(jié)點(diǎn)的內(nèi)容。其輸入abd eh cf i g 。輸入要求的位置 [輸出] 若二叉樹(shù)不空,按先序序列輸出,求出所求位置的結(jié)點(diǎn) [存儲(chǔ)結(jié)構(gòu)] 采用二叉表存儲(chǔ) [算法的基本思想] 采用遞歸方法建立和遍歷二叉樹(shù)。首先建立二叉樹(shù)的根結(jié)點(diǎn),然后建立其左右子樹(shù),直到空子樹(shù)為止,先序遍歷二叉樹(shù)時(shí),先遍厲左子樹(shù),后遍厲右子樹(shù),最后訪問(wèn)根結(jié)點(diǎn)并計(jì)算出二叉樹(shù)中葉子結(jié)點(diǎn)的數(shù)目和第K個(gè)位置的結(jié)點(diǎn) #include<stdio.h> #include<malloc.h> struct Node{ char info struct Node*llink,*rlink } typedef struct Node Node
上傳時(shí)間: 2014-01-13
上傳用戶:zm7516678
探討了pbl的格式,Pbl有四種塊類型,即Header、Free、Node、Data。Header塊的前四個(gè)字節(jié)一定是HDR*,F(xiàn)ree塊則是FRE*,Node塊是NOD*,Data塊是DAT*
上傳時(shí)間: 2015-11-26
上傳用戶:songyue1991
An AHB system is made of masters slaves and interconnections. A general approach to include all possible "muxed" implementation of multi layered AHB systems and arbitrated AHB ones can be thought as an acyclic graph where every source Node is a master, every destination Node is a slave and every internal Node is an arbiter there must be one and only one arc exiting a master and one or more entering a slave (single slave verus multi-slave or arbitrated slave) an arbiter can have as many input and output connections as needed. A bridge is a special Node that collapses one or more slave Nodes and a master Node in a new "complex" Node.
標(biāo)簽: interconnections approach general include
上傳時(shí)間: 2015-12-12
上傳用戶:lyy1234
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