BEFORE
共 137 篇文章
BEFORE 相关的电子技术资料，包括技术文档、应用笔记、电路设计、代码示例等，共 137 篇文章，持续更新中。
基于MSP430F1611单片机的音频信号分析仪设计
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为了使音频信号分析仪小巧可靠，成本低廉，设计了以2片MSP430F1611单片机为核心的系统。该系统将音频信号送入八阶巴特沃兹低通滤波器，对信号进行限幅放大、衰减、电平位移、缓冲，并利用一单片机负责对前级处理后的模拟信号进行采样，将采集得到的音频信号进行4 096点基2的FFT计算，并对信号加窗函数提高分辨率，另一单片机负责对信号的分析及控制显示设备。此设计精确的测量了音频信号的功率
DN427开关控制器故障保护电压监测
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Have you had the exasperating experience of a laptop orPDA defi antly not responding to your commands? Youfrantically press key after key, but to no avail. As hopeturns to anger
Rom Backup Tool for PPC, be sure to backup all data before use this tools
Rom Backup Tool for PPC, be sure to backup all data before use this tools
This file contains board-specific information for the Motorola LoPEC in support of the lopec BSP. S
This file contains board-specific information for the Motorola LoPEC in
support of the lopec BSP. Specifically, this file contains information on
any BSP interface changes from previous software or
clock function for reference before doing homework
clock function for reference before doing homework
Before you even get started on your PhD research, you have already made a decision that will have a
Before you even get started on your PhD research, you have already
made a decision that will have a major impact on the success of your
project, and perhaps even on your future career. You have chos
This article describes how to consume Web services in Java 1.5.0 using the new JAX-WS 2.0 API (JSR 2
This article describes how to consume Web services in Java 1.5.0 using the new JAX-WS 2.0 API (JSR 228).
Developers around the world, including me, have always complained about the hard ways to wo
无线通信网络基本概念及设计
This white paper raises some fundamental issues the design engineer should address before deciding upon a communication approach for a wireless network. As no universal wireless network solution exist
Xilinx UltraScale：新一代架构满足您的新一代架构需求（EN）
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<span style="color:#ff0000;"><strong>中文版详情浏览</strong></span>：<a href="http://www.elecfans.com/emb/fpga/20130715324029.html">http://www.elecfans.com/emb/fpga/20130715324029.html</a></p>
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Designing Boards with Atmel AT
Designing Boards with Atmel AT89C51, AT89C52, AT89C1051, and AT89C2051 for Writing Flash at In-Circuit Test:Recent improvements in chips and<BR>testers have made it possible for the<BR>tester to begin
Atmel AT89C系列单片机电路板设计指南
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Designing Boards with Atmel AT89C51,AT89C52, AT89C1051, and AT89C2051 for Writing Flash at In-Circuit Test.</p>
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Recent improvements in chips and testers have made it possible for the tester
Xilinx UltraScale：新一代架构满足您的新一代架构需求（EN）
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<span style="color:#ff0000;"><strong>中文版详情浏览</strong></span>：<a href="http://www.elecfans.com/emb/fpga/20130715324029.html">http://www.elecfans.com/emb/fpga/20130715324029.html</a></p>
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TMS320C6000 Assembly Language
<P>Texas Instruments and its subsidiaries (TI) reserve the right to make changes to their products<BR>or to discontinue any product or service without notice, and advise customers to obtain the latest
LED的电源管理
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A light-emitting diode (LED) is a semiconductor device that emits narrow-spectrum incoherent light when forward-biased.The color of the emitted light depends on the chemical composition of the
PICkit™ 2 Microcontrolle
<P><STRONG>PICkit™ 2 Microcontroller Programmer USER’S GUIDE</STRONG></P>
<P>This chapter contains general information that will be useful to know before using the<BR>PICkit™ 2 Microcontro
LLCR Pin Socket Testing with t
<P>LLCR Pin Socket Testing with the Model 3732 High Density Matrix Card</P>
<P>Computer processors (CPUs) today have come a long way from the computer processors of the past. They draw more power, run
SUNPLUSIT编程工具Q-Writer使用说明书
Important Notice <BR>SUNPLUS INNOVATION TECHNOLOGY INC. reserves the right to change this documentation without prior <BR>notice. Information provided by SUNPLUS INNOVATION TECHNOLOGY INC.