This document provides general hardware and layoutconsiderations and guidelines for hardware engineersimplementing a DDR3 memory subsystem.The rules and recommendations in this document serve as aninitial baseline for board designers to begin their specificimplementations, such as fly-by memory topology.
标签： ddr3
上传时间： 2021-11-21
上传用户：
LED数码管及编码方式静态显示方式及其典型应用电路动态显示方式及其典型应用电路虚拟I2C总线串行显示电路键盘去抖动和连接、控制方式独立式按键及其接口电路矩阵式键盘及其接口电路并行A/D ADC0809及其接口电路串行A/D ADC0832及其接口电路I2C串行A/D典型应用电路DAC0832及其接口电路I2C串行D/A典型应用电路开关量驱动输出接口电路
上传时间： 2021-12-04
上传用户：
Agilent 34401A Service Guide.pdfIEC Measurement Category II includes electrical devices connected to mains at an outlet on a branch circuit. Such devices include most small appliances, test equipment, and other devices that plug into a branch outlet or socket. The 34401A may be used to make measurements with the HI and LO inputs connected to mains in such devices, or to the branch outlet itself (up to 300 VAC). However, the 34401A may not be used with its HI and LO inputs connected to mains in permanently installed electrical devices such as the main circuit-breaker panel, sub-panel disconnect boxes, or permanently wired motors. Such devices and circuits are subject to overvoltages that may exceed the protection limits of the 34401A. Note: Voltages above 300 VAC may be measured only in circuits that are isolated from mains. However, transient overvoltages are also present on circuits that are isolated from mains. The Agilent 34401A are designed to safely withstand occasional transient overvoltages up to 2500 Vpk. Do not use this equipment to measure circuits where transient overvoltages could exceed this level. Additional Notices Waste Electrical and Electronic Equipment (WEEE) Directive 2002/96/EC This product complies with the WEEE Directive (2002/96/EC) marking requirement. The affixed product label (see below) indicates that you must not discard this electrical/electronic product in domestic household waste. Product Category: With reference to the equipment types in the WEEE directive Annex 1, this product is classified as a "Monitoring and Control instrumentation" product. Do not dispose in domestic household waste. To return unwanted products, contact your local Agilent office, or see www.agilent.com/environment/product for more information. Agilent 34138A Test Lead Set The Agilent 34401A is compatible with the Agilent 34138A Test Lead Set described below. Test Lead Ratings Test Leads - 1000V, 15A Fine Tip Probe Attachments - 300V, 3A Mini Grabber Attachment - 300V, 3A SMT Grabber Attachments - 300V, 3A Operation The Fine Tip, Mini Grabber, and SMT Grabber attachments plug onto the probe end of the Test Leads. Maintenance If any portion of the Test Lead Set is worn or damaged, do not use. Replace with a new Agilent 3413
标签： agilent
上传时间： 2022-02-20
上传用户：
学习本章要达到的目标：口1.理解 Linux内核编译选项的含义口2.学会根据不同的硬件配置裁减定制内核；口3.理解内核编译过程中每一步的功能，并编译 Linux2.630内核。需要去重新编译 Linux内核口增加操作系统对新的硬件设备的支持口增加内核新的功能口对内核代码或内核配置进行优化时Prompt for development and/or incomplete code/drivers口显示处于开发调试中或尚未完善的代码或驱口选中：如果是测试人员或者开发者；口不选：其他情况Local version append to kerne release口追加本地版本号口使用命令“uname-a”进行查看。POSIX Message Queues口 POSIX消息队列的支持，这是 POSIX进程间通信的一部分BSD Process Accounting口将进程的统计信息写入文件口信息通常包括建立时间、所有者、命令名称、内存使用、控制终端等，这个选项一般是选择的。Enable loadable module support口使能可加载模块支持口如果使能此选项则可以通过"makemodules_insta"把内核模块安装在/lib/modules/中Kernel support for ELF binaries口内核对ELF文件格式的支持口ELF是开放平台下最常用的二进制文件格式支持动态连接，支持不同的硬件平台Kernel support for a out and ECOFF binaries口早期UNIX系统的可执行文件格式，目前已经被ELF格式取代Unix domain sockets口本机高效率的 Socket口仅能运行在本机上的高效率的 Socket，简称 Unix socket。口很多进程使用为这种机制在操作系统内部进行进程间通信，例如 X Window和 syslog等TCP/IP networking口TcP/IP网络协议的支持
标签： linux
上传时间： 2022-03-29
上传用户：kingwide
说明： 毕业设计论文，基于单片机的电子密码锁设计，有源码，很详细！(Thesis, microcontroller-based design of electronic locks, a source, very detailed!)
上传时间： 2022-05-17
上传用户：XuVshu
本书作者以轻松幽默的笔调向读者论述了高质量软件开发方法与C++/C编程规范。本书共15章，重点介绍软件质量和面向对象程序设计方法，C++/C编程风格和一些技术专题等内容。第1章 高质量软件开发之道 第2章 做好程序员 第3章 编程语言发展简史 第4章 C++面向对象程序设计方法概述 第5章 文件结构 第6章 程序的版式 第7章 命名规则 第8章 表达式和基本语句 第9章 常量 第10章 函数设计 第11章 内存管理 第12章 C++函数的高级特性 第13章 类的构造、析构与赋值函数 第14章 C++ STL应用编程建议 第15章 其他编程经验 附录A C++/C试题
上传时间： 2022-06-16
上传用户：
The information disclosed to you hereunder (the Materials ) is provided solely for the selection and use of Xilinx products. To the maximum extent permitted by applicable law: (1) Materials are made available"AS IS"and with all faults, Xilinx hereby DISCLAIMS ALL WARRANTIES AND CONDITIONS, EXPRESS, IMPLIED, OR ST ATUTORY, INCLUDING BUT NOT LIMITED TO WARRANTIES OF MERCHANTABILITY NON-INFRINGEMENT, OR FITNESS FOR ANY PARTICULAR PURPOSE; and (2) Xilinx shall not be liable (whether in contract or tort. includina nealigence. or under anv other theorv of liabilitv) for any loss or damage of any kind or nature related to, arising under, or in connection with, the Materials (including vour use of the Materials), including for any direct, indirect, special, incidental, or consequential loss or damage (including loss of data, profits, qoodwill, or any type of loss or damage suffered as a result of anv action brought by a third party)
上传时间： 2022-06-18
上传用户：
INTRODUCTION In the past, adding speech recording and playback capability to a product meant using a digital signal processor or a specialized audio chip. Now, using a simplified Adaptive Differential Pulse Code Modulation(ADPCM) algorithm, these audio capabilities can be added to any PICmicro device. This application note will cover the ADPCM compression and decompression algorithms, performance comparison of all PICmicro devices, and an application using a PIC16C72 micro-controller.DEFINITION OF TERMS step size -value of the step used for quantization of ana-log signals and inverse quantization of a number of steps.quantization -the digital form of an analog input signal is represented by a finite number of steps.adaptive quantization -the step size of a quantizer is dramatically changed with time in order to adapt to a changing input signal.inverse quantizer -a finite number of steps is converted into a digital representation of an analog signal.
上传时间： 2022-06-20
上传用户：
文件较大，存在网盘中，下载文件获取分享链接及提取码。和其他书籍相比，本书有如下优点①本书首先详细介绍了51系列单片机的基础知识，然后对单片机的编程语言及程序设计方式进行了详细的讲解，接着还介绍了很多具有代表性的案例。②本书在讲解每个知识点的同时，均给出了其在程序设计中的应用实例，每个实例都可以仿真执行，读者可以快速掌握对应知识点在程序设计中的应用。③本书不局限于一种编程语言，对汇编语言和流行的单片机C语言都做了详细介绍，其中以应用最为广泛的单片机C语言作为重点，而且在绝大部分的知识点讲解中给出了汇编语言和单片机C语言的程序示例，部分知识点则根据程序本身的需要，选择一种更为方便的实现方式。④本书不仅介绍了基本的程序设计方式，还介绍了应用于51系列单片机的RTX-51实时多任务操作系统。⑤本书案例丰富，基本上涵盖了电子设计的各个领域，如键盘接口、LED、LCD液晶显示、CPLD、I2C总线、实时时钟、音乐播放、RAM存储器读写、RTX-51实时多任务操作系统、温度传感器、打印机、A/D转换和D/A转换等。6⑤本书对每一个案例都详细介绍了知识背景、硬件及软件设计流程，并对程序代码进行了详细的注释，对开始的案例几乎是逐行注释，使之更加容易理解。本书的内容本书把实用性、系统性和完整性作为重点，详细介绍了51系列单片机的原理和功能，对于每一个知识点均给出了详细的程序设计方法和编程示例，最后还提供了一些典型的应用案例。本书内容分为5篇，共38章。
标签： 51单片机
上传时间： 2022-06-24
上传用户：
1.特色（CY7C68013A/14A/15A/16A）■USB 2.0USB IF 高速性能且经过认证（TID#40460272）■单芯片集成USB2.0收发器、智能串行接口引擎（SIE）和增强型8051微处理器■适用性、外观和功能均与FX2兼容a引脚兼容口目标代码兼容a功能兼容（FX2LP是超集）■超低功耗：lcc在任何模式下都不超过85mA a适合总线和电池供电的应用软件：8051代码运行介质：3内部RAM，通过USB下载口内部RAM，从EEPROM加载口外部存储设备（128引脚封装）■16K字节片上代码/数据RAM■四个可编程的BULK/INTERRUPT/ISOCHRONOUS 端点口缓冲区大小选项：两倍，三倍，四倍■附加的可编程（BULK/INTERRUPT）64位端点■8位或16位外部数据接口■可生成智能介质标准错误校正码ECC
标签： usb
上传时间： 2022-06-25
上传用户：zhaiyawei
