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The Linux Enterprise Cluster explains how to take a number of inexpensive computers with limited resources, place them on a normal computer network, and install free software so that the computers act together like one powerful server. This makes it possible to build a very inexpensive and reliable business system for a small business or a large corporation. The book includes information on how to build a high-availability server pair using the Heartbeat package, how to use the Linux Virtual Server load balancing software, how to configure a reliable printing system in a Linux cluster environment, and how to build a job scheduling system in Linux with no single point of failure. The book also includes information on high availability techniques that can be used with or without a cluster, making it helpful for System Administrators even if they are not building a cluster. Anyone interested in deploying Linux in an environment where low cost computer reliability is important will find this book useful.
標(biāo)簽： inexpensive Enterprise computers explains
上傳時(shí)間： 2014-11-29
上傳用戶：zhangliming420
DELPHIBOX The ImageHTML converts images to ASCII characters in HTML format. The output image is in three formats: true color, grayscale, and mono color. The ImageHTML is provided "AS IS " without any warranty of any kind, either express or implied. The entire risk as to the quality and performance of the software is with you. The author is not liable for any damages resulting from the use and misuse of the software. The ImageHTML is freeware. You may copy it as long as you copy all of files.
標(biāo)簽： characters DELPHIBOX The ImageHTML
上傳時(shí)間： 2013-12-27
上傳用戶：zhichenglu
TFIND searches for one or more strings (boolean AND) in a text file. TFIND reports all lines where the string(s) were found (or NOT found by option). The search can be limited to a field in a fixed field (i.e. column oriented) list. An extended search mode is available, where only letters and digits are relevant. Other options: case sensitive search, alternative errorlevel with number of hits, header line with file name, LFN, custom prefix
標(biāo)簽： TFIND searches boolean reports
上傳時(shí)間： 2016-01-24
上傳用戶：lindor
Codesys的安裝 - 1.1 雙擊安裝源目錄下的CoDeSys\setup\CoDeSys_v2347.exe.進(jìn)行安裝。 1.2 拷貝目錄CoDeSys\update\下的所有文件到安裝目錄下，覆蓋所有文件。 1.3 拷貝安裝源目錄CoDeSys\configs\下的所有文件到安裝目錄Targets\下，如果沒有該目錄，可以新 建一個(gè)。 1.4 拷貝library中的所有文件到安裝目錄中的library中，覆蓋所有文件。 1.5 雙擊安裝目錄下的InstallTarget.exe，出現(xiàn)一下窗口，進(jìn)行配置。
標(biāo)簽： CoDeSyssetupCoDeSys_v CoDeSysupdate Codesys 2347
上傳時(shí)間： 2013-12-30
上傳用戶：小草123
The 1.4 release of Java 2 Standard edition brings a load of new features - and the potential for frustration. Fret not, our new 4th edition has answers. The accelerated introduction lets you start writing code right away, and because the book s classic quick reference contains all the classes in the essential Java packages, you can find exactly what you need to make Java s new version work for you.
標(biāo)簽： potential Standard features release
上傳時(shí)間： 2014-11-27
上傳用戶：huannan88
As all of you know, MATLAB is a powerful engineering language. Because of some limitation, some tasks take very long time to proceed. Also MATLAB is an interpreter not a compiler. For this reason, executing a MATLAB program (m file) is time consuming. For solving this problem, Mathworks provides us C Math Library or in common language, MATLAB API. A developer can employ these APIs to solve engineering problems very fast and easy. This article is about how can use these APIs.
標(biāo)簽： some engineering limitation language
上傳時(shí)間： 2013-12-06
上傳用戶：huql11633
KEPware Automation DLL installation instructions: To use the KEPware Automation DLL in your Visual Basic project: 1) In the VB IDE, Select "Project/References". 2) If you have been using another vender s automation dll, uncheck it. For example, uncheck "OPC Automation 2.0" for the OPC Foundation s automation dll. 3) Check "KEPware OPC Automation 2.0". 4) Recompile your VB project. If you have been using the OPC Fondation s automation dll, you should not need to make any changes to the VB source code.
標(biāo)簽： Automation KEPware installation instructions
上傳時(shí)間： 2013-12-28
上傳用戶：電子世界
A new cable fault location method based on wavelet reconstruction is proposed. In this method the difference between the currents of faulty phase and sound phase under the high voltage pulse excitation is used as the measured signal and is decomposed in multi-scale by wavelet transform, then reconstructed in single scale. Comparing with traditional fault location method by travelling wave, the presented method will not be interfered by the reflected wave from the branch joint of cables or from other positions where the impedances are not matched and not be influenced by fault types, otherwise, the reflected waves can be recognized even the faulty position is near to the measuring terminal, at the same time, the influence of the wave speed uncertainty can be reduced. The correctness of the proposed method is proved by simulation results.
標(biāo)簽： method reconstruction location proposed
上傳時(shí)間： 2016-02-04
上傳用戶：maizezhen
Easy-to-Use, Ultra-Tiny, Differential, 16-Bit Delta Sigma ADC With I2C Interface The LTC2453 is an ultra-tiny, fully differential, 16-bit, analog-to-digital converter. The LTC2453 uses a single 2.7V to 5.5V supply and communicates through an I2C interface. The ADC is available in an 8-pin, 3mm x 2mm DFN package. It includes an integrated oscillator that does not require any external components. It uses a delta-sigma modulator as a converter core and has no latency for multiplexed applications. The LTC2453 includes a proprietary input sampling scheme that reduces the average input sampling current several orders of magnitude lower than conventional delta-sigma converters. Additionally, due to its architecture, there is negligible current leakage between the input pins.
標(biāo)簽： Differential Easy-to-Use Ultra-Tiny Interface
上傳時(shí)間： 2014-01-08
上傳用戶：鳳臨西北
// Copyright (c), Philips Semiconductors Gratkorn // (C)PHILIPS Electronics N.V.2000 // All rights are reserved. // Philips reserves the right to make changes without notice at any time. // Philips makes no warranty, expressed, implied or statutory, including but // not limited to any implied warranty of merchantibility or fitness for any //particular purpose, or that the use will not infringe any third party patent, // copyright or trademark. Philips must not be liable for any loss or damage // arising from its use.
標(biāo)簽： Semiconductors Electronics Copyright Gratkorn
上傳時(shí)間： 2016-02-04
上傳用戶：xuanjie
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