Frequently, voltage reference stability and noise defi nemeasurement limits in instrumentation systems. In particular,reference noise often sets stable resolution limits.Reference voltages have decreased with the continuingdrop in system power supply voltages, making referencenoise increasingly important. The compressed signalprocessing range mandates a commensurate reductionin reference noise to maintain resolution. Noise ultimatelytranslates into quantization uncertainty in A to D converters,introducing jitter in applications such as scales, inertialnavigation systems, infrared thermography, DVMs andmedical imaging apparatus. A new low voltage reference,the LTC6655, has only 0.3ppm (775nV) noise at 2.5VOUT.Figure 1 lists salient specifi cations in tabular form. Accuracyand temperature coeffi cient are characteristic ofhigh grade, low voltage references. 0.1Hz to 10Hz noise,particularly noteworthy, is unequalled by any low voltageelectronic reference.
上傳時間： 2013-10-30
上傳用戶：wxhwjf
隨著總線和接口技術的發展，在工業場合如何更加可靠、快速、便捷地進行數據傳輸成為該領域通信的研究重點之一。而USB技術以其高速、可靠、通用性強等一系列特點在過去的十多年時間里發展迅猛，而USB OTG技術的誕生，使得兩USB設備在沒有PC參與的情況下進行數據傳輸成為可能。本文通過搭建以16位微處理器MSP430F149為核心控制芯片、ISPl362為USB接口芯片的硬件平臺，分別實現了USB部分主機和從機功能，使之能進行USB數據的存儲與交換。本文完成以下工作：首先，認真研究USB協議，深入理解USB通信的基本概念和傳輸方式等內容。仔細分析USB Mass Storage類協議，并討論了采用BULK-ONLY傳輸實現Mass Storage類協議的方法，并對SCSI指令集等進行了深入的剖析。其次，根據要求，設計出由控制、接口、數據存儲、過流保護與供電切換電路等硬件模塊組成的系統，在ALTIUM 2004軟件上完成原理圖的設計和PCB圖的布局、布線，并完成硬件調試工作。再次，在已構建的硬件平臺上，針對ISPl362 USB接口芯片的主／從機功能，分別設計了USB主機和從機的固件程序。利用IAR Workbench、BusHound等軟件進行固件程序的調試，最終USB主機可對u盤進行檢測、識別與配置；USB設備實現了USB設備的基本功能，能夠被Windows XP操作系統識別，與PC機之間實現數據的批量傳輸。最后，用DriverWorks軟件包的Driver Wizard生成驅動程序框架，并利用Windows DDK和vc++等軟件進行驅動程序的編譯，最終生成基于Windows操作系統的WDM型USB設備驅動程序。通過對USB通信協議的研究，本人成功地構建了以MsP430F149和ISPl362為核心的硬件試驗平臺，并在此平臺上進行USB主機、從機通信試驗。經測試表明，PC機能檢測、識別、讀寫USB設備，其讀取與寫入速度分別為560KB／s和312Ⅺ玳。而主機能識別、配置接入的U盤。關鍵詞：USB主機、USB從機、MSI'430F149、ISPl362、BuR-Only傳輸
上傳時間： 2013-10-11
上傳用戶：淺言微笑
Full support for extended regular expressions (those with intersection and complement); Support for some kinds of cycles in grammar; DFA-based operation; Unicode support; C++ only, requires a modern compiler; Lexical analyzers can be configured to get symbols from any input class (built-in support for std::istream, std::wistream and FILE *); Designed to work with Whale, but can work standalone or interface to other parsers.
標簽： intersection expressions complement for
上傳時間： 2013-12-11
上傳用戶：zhanditian
工具分類：攻擊程序 運行平臺：Windows 工具大小：7577 Bytes 文件MD5 ：28f6d5f4d818438522a3d0dc8a3fa46b 工具來源：securiteam.com // GDI+ buffer overrun exploit by FoToZ // NB: the headers here are only sample headers taken from a .JPG file, // with the FF FE 00 01 inserted in header1. // Sample shellcode is provided // You can put approx. 2500 bytes of shellcode...who needs that much anyway // Tested on an unpatched WinXP SP1
標簽： 818438522a d818438522 securiteam 818438522
上傳時間： 2015-01-20
上傳用戶：Late_Li
What s inside :README - this fileINSTALL - installation instructionsstlport - main STLport include directorysrc - source and makefiles for iostreams implementationlib - installation directory for STLport library (if you use STLport iostreams only)test/regression - regression test, using wrapper iostreamstest/eh - exception handling test using STLport iostreamsetc - miscellanous files (ChangeLog, TODO, scripts, etc.)
標簽： instructionsstlport installation fileINSTALL STLport
上傳時間： 2014-01-19
上傳用戶：1159797854
外部SRAM與C8051F000接口 Copyright (C) 2000 CYGNAL INTEGRATED PRODUCTS, INC. All rights reserved. FILE NAME : Sram.ASM TARGET MCU : C8051F000 DESCRIPTION : External Sram read/write verification routine for IDT 71V124SA.
標簽： INTEGRATED C8051F000 Copyright PRODUCTS
上傳時間： 2014-11-29
上傳用戶：leehom61
Sanos Operating System Kernel ----------------------------- Sanos is an OS kernel for use in PC based server appliances. The kernel was developed as part of an experiment on investigating the feasibility of running java server applications without a traditional operating system only using a simple kernel.
標簽： Sanos Operating Kernel System
上傳時間： 2014-01-03
上傳用戶：1159797854
Net-Sky ChatServer不同于其他的用PHP，ASP，PERL等腳本語言編寫的或其他任何CGI模式的聊天程式，本聊天室程序使用標準C語言開發，獨立于任何第三方WEBSERVER而運行，快速，高效，穩定，大容量。程序的設計目標是能在一臺普通的PC上同時容納上萬人聊天。經初步測試，完全達標：每個聊天室一道進程，占內存約700K，80人在線時占CPU約0.03% (Pll450)。程序啟動即將所有模版一次性載入內存，最大限度減少硬盤的I/O操作（聊天過程沒有任何硬盤I/O），最大限度提高性能。這不不并不意味著每次修改配置后要重新啟動聊程式，系統提供專門的管理員命令來重載或修改配置，而不須停止或間斷服務。(Only For Linux)
標簽： ChatServer Net-Sky PHP
上傳時間： 2013-12-08
上傳用戶：qazxsw
The Kannel Open Source WAP and SMS gateway works as both an SMS gateway, for implementing keyword based services via GSM text messages, and a WAP gateway, via UDP. The SMS part is fairly mature, the WAP part is early in its development. In this release, the GET request for WML pages and WMLScript files via HTTP works, including compilation for WML and WMLScript to binary forms. Only the data call bearer (UDP) is supported, not SMS.
標簽： gateway implementing SMS keyword
上傳時間： 2014-01-11
上傳用戶：2525775
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
