本软件是关于MAX338, MAX339的英文数据手册：MAX338, MAX339 8通道/双4通道、低泄漏、CMOS模拟多路复用器 The MAX338/MAX339 are monolithic, CMOS analog multiplexers (muxes). The 8-channel MAX338 is designed to connect one of eight inputs to a common output by control of a 3-bit binary address. The dual, 4-channel MAX339 is designed to connect one of four inputs to a common output by control of a 2-bit binary address. Both devices can be used as either a mux or a demux. On-resistance is 400Ω max, and the devices conduct current equally well in both directions. These muxes feature extremely low off leakages (less than 20pA at +25°C), and extremely low on-channel leakages (less than 50pA at +25°C). The new design offers guaranteed low charge injection (1.5pC typ) and electrostatic discharge (ESD) protection greater than 2000V, per method 3015.7. These improved muxes are pin-compatible upgrades for the industry-standard DG508A and DG509A. For similar Maxim devices with lower leakage and charge injection but higher on-resistance, see the MAX328 and MAX329.
上传时间： 2013-11-12
上传用户：18711024007
This book evolved over the past ten years from a set of lecture notes developed while teaching the undergraduate Algorithms course at Berkeley and U.C. San Diego. Our way of teaching this course evolved tremendously over these years in a number of directions, partly to address our students' background (undeveloped formal skills outside of programming), and partly to reect the maturing of the eld in general, as we have come to see it. The notes increasingly crystallized into a narrative, and we progressively structured the course to emphasize the story line implicit in the progression of the material. As a result, the topics were carefully selected and clustered. No attempt was made to be encyclopedic, and this freed us to include topics traditionally de-emphasized or omitted from most Algorithms books.
标签： Algorithms 算法
上传时间： 2013-11-11
上传用户：JamesB
MOTION BUILDER Ver.2 是用于监控 KV-H20/H20S/H40S/H20G 的参数设定以及当前动作状态的软件。 在 PC 上可以设定复杂的参数，并可以在显示画面上监控正在运行的 KV-H20/H20S/H40S/H20G。 关于 MOTION BUILDER Ver.2 概要、功能与使用方法的详细说明。在安装之前，请仔细阅读本手册，并充分 理解。 注意 1、使用 MOTION BUILDER Ver.2 时，必须在可以使用 KV-H20/H20S/H40S/H20G 上 连接的紧急停止开关的地方使用。 通讯异常时，不接受 MOTION BUILDER Ver.2 的“强制停止”，可能会导致事故指示发生。发生通信异常时，MOTION BUILDER Ver.2 的“强制停止”按钮将不起作用。 2、JOG 过程中，不能采用断开 PLC 的连接电缆等手段停止通讯。 KV-H20/H20S/H40S/H20G 单元的 JOG 继电器会一直保持 ON，机器继续运转，并可能导致事故发生。 3、执行监控或者写入参数（设定）时，不能断开和 PLC 的连接电缆。 否则会发生通讯错误，PC 可能会被重启。KV-H20/H20S/H40S/H20G 内的数据可 能会损坏。 4、在 RUN 过程中，KV-1000/700 进行 JOG 示教时，必须在 PROG 模式下实施。 如果扫描时间较长，则反映的时间变长，且可能发生无法预料的动作。 5、发送到 KV-1000/700 的单元设定信息必须与当前打开的梯形图程序的单元设定信 息一致。如果设定信息不同，则显示错误，且不运行。 6、错误操作或者静电等会引起数据变化或者去失，为了保护数据，请定期进行备份。 指示 关于数据的变化或者消失引起的损失，本公司不负任何责任，请谅解。 7、保存数据时，如果需要保留原来保存的数据，则选择“重命名保存”。 如果“覆盖保存”则会失去原来保存的数据。 运行环境及系统配置 运行 MOTION BUILDER Ver.2 ，必须具备如下环境。 请确认您使用的系统是否符合如下条件、是否备齐了必需的设备。 对应的 PC 机型 • IBM PC 以及 PC/AT 兼容机（DOS/V） 系统配置 • CPU Pentium 133 MHz 以上 支持 Windows 的打印 （推荐 Pentium 200 MHz 以上） • 内存容量扩展内存 64MB 以上 • 硬盘可用空间 20MB 以上 • CD-ROM 驱动器 • 接口 RS-232C 或者 USB
上传时间： 2013-10-08
上传用户：fujiura
This example shows how to update at regulate period the WWDG counter using theEarly Wakeup interrupt (EWI). The WWDG timeout is set to 262ms, refresh window set to 41h and the EWI isenabled. When the WWDG counter reaches 40h the EWI is generated and in the WWDGISR the counter is refreshed to prevent a WWDG reset and led connected to PC.07is toggled.The EXTI line9 is connected to PB.09 pin and configured to generate an interrupton falling edge.In the NVIC, EXTI line9 to 5 interrupt vector is enabled with priority equal to 0and the WWDG interrupt vector is enabled with priority equal to 1 (EXTI IT > WWDG IT). The EXTI Line9 will be used to simulate a software failure: once the EXTI line9event occurs (by pressing Key push-button on EVAL board) the correspondent interruptis served, in the ISR the led connected to PC.07 is turned off and the EXTI line9pending bit is not cleared. So the CPU will execute indefinitely EXTI line9 ISR andthe WWDG ISR will never be entered(WWDG counter not updated). As result, when theWWDG counter falls to 3Fh the WWDG reset occurs.If the EXTI line9 event don抰 occurs the WWDG counter is indefinitely refreshed inthe WWDG ISR which prevent from WWDG reset. If the WWDG reset is generated, after resuming from reset a led connected to PC.06is turned on. In this example the system is clocked by the HSE(8MHz).
上传时间： 2013-11-11
上传用户：gundamwzc
C++在几乎所有的计算环境中都非常普及，而且可以用于几乎所有的应用程序。C++从C中继承了过程化编程的高效性，并集成了面向对象编程的功能。C++在其标准库中提供了大量的功能。有许多商业C++库支持数量众多的操作系统环境和专业应用程序。但因为它的内容太多了，所以掌握C++并不十分容易。本书详述了C++语言的各个方面，包括数据类型、程序控制、函数、指针、调试、类、重载、继承、多态性、模板、异常和输入输出等内容。每一章都以前述内容为基础，每个关键点都用具体的示例进行详细的讲解。本书基本不需要读者具备任何C++知识，书中包含了理解C++的所有必要知识，读者可以从头开始编写自己的C++程序。本书也适合于具备另一种语言编程经验但希望全面掌握C++语言的读者。 I created all the files under Microsoft Windows so lines are terminated by CR/LF. In addition to this "ReadMe" file you will find three zip archives in the primary archive, so you need to unzip each of these to get at the code. 为PDG格式,这有pdg阅读器下载|pdg文件阅读器下载
标签： 源代码
上传时间： 2013-11-18
上传用户：gaoqinwu
There has long been a need for portable ultrasoundsystems that have good resolution at affordable costpoints. Portable systems enable healthcare providersto use ultrasound in remote locations such asdisaster zones, developing regions, and battlefields,where it was not previously practical to do so.
上传时间： 2015-01-01
上传用户：hfnishi
Nios II软件构建工具入门 The Nios® II Software Build Tools (SBT) allows you to construct a wide variety of complex embedded software systems using a command-line interface. From this interface, you can execute Software Built Tools command utilities, and use scripts other tools) to combine the command utilities in many useful ways. This chapter introduces you to project creation with the SBT at the command line This chapter includes the following sections: ■ “Advantages of Command-Line Software Development” ■ “Outline of the Nios II SBT Command-Line Interface” ■ “Getting Started in the SBT Command Line” ■ “Software Build Tools Scripting Basics” on page 3–8
上传时间： 2013-11-15
上传用户：nanxia
Introduction to Xilinx Packaging Electronic packages are interconnectable housings for semiconductor devices. The major functions of the electronic packages are to provide electrical interconnections between the IC and the board and to efficiently remove heat generated by the device. Feature sizes are constantly shrinking, resulting in increased number of transistors being packed into the device. Today's submicron technology is also enabling large-scale functional integration and system-on-a-chip solutions. In order to keep pace with these new advancements in silicon technologies, semiconductor packages have also evolved to provide improved device functionality and performance. Feature size at the device level is driving package feature sizes down to the design rules of the early transistors. To meet these demands, electronic packages must be flexible to address high pin counts, reduced pitch and form factor requirements. At the same time,packages must be reliable and cost effective.
上传时间： 2013-11-21
上传用户：不懂夜的黑
Design techniques for electronic systems areconstantly changing. In industries at the heart of thedigital revolution, this change is especially acute.Functional integration, dramatic increases incomplexity, new standards and protocols, costconstraints, and increased time-to-market pressureshave bolstered both the design challenges and theopportunities to develop modern electronic systems.One trend driving these changes is the increasedintegration of core logic with previously discretefunctions to achieve higher performance and morecompact board designs.
上传时间： 2013-11-23
上传用户：kangqiaoyibie
Xilinx is disclosing this user guide, manual, release note, and/or specification (the "Documentation") to you solely for use in the developmentof designs to operate with Xilinx hardware devices. You may not reproduce, distribute, republish, download, display, post, or transmit theDocumentation in any form or by any means including, but not limited to, electronic, mechanical, photocopying, recording, or otherwise,without the prior written consent of Xilinx. Xilinx expressly disclaims any liability arising out of your use of the Documentation. Xilinx reservesthe right, at its sole discretion, to change the Documentation without notice at any time. Xilinx assumes no obligation to correct any errorscontained in the Documentation, or to advise you of any corrections or updates. Xilinx expressly disclaims any liability in connection withtechnical support or assistance that may be provided to you in connection with the Information.
上传时间： 2013-11-11
上传用户：zwei41
