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可编程逻辑 XAPP444 - CPLD配件,技巧和窍门
Most designers wish to utilize as much of a device as possible in order to enhance the overallproduct performance, or extend a feature set. As a design grows, inevitably it will exceed thearchitectural limitations of the device. Exactly why a design does not fit can sometimes bedifficult to determ ...
可编程逻辑 XAPP740利用AXI互联设计高性能视频系统
This application note covers the design considerations of a system using the performance
features of the LogiCORE™ IP Advanced eXtensible Interface (AXI) Interconnect core. The
design focuses on high system throughput through the AXI Interconnect core with F
MAX
 and
area optimizat ...
工控技术 通过SIMATIC HMI进行控制和监视
反复提示需要重新启动：在”运行“，输入”Regedit“打开注册表， 出如下的注册表键值”HKEY_LOCAL_MACHINE\SYSTEM\CurrentControl Set\Control\Session Manager\PendingFileRenameOperations”
显示出错消息1645”安装Microsoft Net Framework”时出错，返回代码1601，安装被 ...
工控技术 三菱FX-PLC的通讯协议参考(含有源码)
三菱FX-PLC 的通讯协议参考(含有源码):三菱FX 系列PLC 专用协议通信指令一览FX 系列PLC 专用协议通信指令一览以下将详细列出PLC 专用协议通信的指令指令 注释BR 以1 点为单位，读出位元件的状态WR 以16 点为单位，读出位元件的状态，或以1 字为单位读出字元件的值BW 以1 点为单位，写入位元件的状态WW 以16 点为单位，写入 ...
测试测量 LT5514三阶互调的精确测量
 
Accurate measurement of the third order intercept pointfor low distortion IC products such as the LT5514 requirescertain precautions to be observed in the test setup andtesting procedure. The LT5514 linearity performance ishigh enough to push the test equipment and test set-up totheir lim ...
设计相关 Arduino学习笔记3_连接HMC5883L三轴电子罗盘传感器
用途：测量地磁方向，测量物体静止时候的方向，测量传感器周围磁力线的方向。注意，测量地磁时候容易受到周围磁场影响，主芯片HMC5883 三轴磁阻传感器特点（抄自网上）：
1，数字量输出：I2C 数字量输出接口，设计使用非常方便。
2，尺寸小: 3x3x0.9mm LCC 封装，适合大规模量产使用。
3，精度高：1－2 度，内置12 位A ...
手机短信编程 简单的session类
简单的session类，用于手机短信应用。主要包括setAttribute（），getAttribute(), removeSession()个方法，set方法在没有session时自动建立一个session.
单片机开发 单片机最小系统
单片机最小系统，两位LED数码管由串口输出接两个164驱动，Lout,Rout为左右声道输出，SET， ALT0， ALT1为三个按键，也可自己在开始的I/O定义改成你想用的I/O口；12M晶振若用89C51则只可装下约14首歌曲，用89C52则可装下近40曲
uCOS 介绍几种cpuThe 8xC251SA/SB/SP/SQ improves on the MCS-51 architecture and peripheral features, introducin
介绍几种cpuThe 8xC251SA/SB/SP/SQ improves on the MCS-51 architecture and peripheral features, introducing the advanced register based CPU architecture i.e., the MCS 251 microcontroller architecture. The register based CPU supports a 40-byte register file. In addition, the 8xC251SA/SB/SP/SQ microcont ...
matlab例程 基于matlab的mp3的读写函数Mp3 toolbox for Matlab. Alfredo Fernandez Franco Aalborg University Departament of
基于matlab的mp3的读写函数Mp3 toolbox for Matlab. Alfredo Fernandez Franco Aalborg University Departament of Acoustics M.Sc. Student aberserk@yahoo.com Includes 2 functions to write and read MP3 files. It works like the commands WAVWRITE and WAVREAD. 1.- Just unpack in the toolbox folder under the MA ...