Needs
共 170 篇文章
Needs 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 170 篇文章，持续更新中。
Mastering the Requirements Process, Second Edition, sets out an industry-proven process for gatherin
Mastering the Requirements Process, Second Edition, sets out an industry-proven process for gathering and verifying requirements with an eye toward today s agile development environments. In this tota
The file defines an AVI-compatible file format that addresses the particular needs of professional v
The file defines an AVI-compatible file format that addresses the particular needs of professional video.
Watermarking schemes evaluation Abstract鈥擠igital watermarking has been presented as a solution to c
Watermarking schemes evaluation
Abstract鈥擠igital watermarking has been presented as a solution to copy protection of multimedia objects and dozens of schemes and algorithms have been proposed. Two ma
MODE_Switch1Processing multi-interrupt request needs to set the priority of these interrupt requests
MODE_Switch1Processing multi-interrupt request needs to set the priority of these interrupt requests.
The IRQ flags of the 7 interrupt are controlled by the interrupt event occurring. But the
IRQ fl
Beginning with an introduction to 802.11b in general, 802.11 Security gives you a broad basis in the
Beginning with an introduction to 802.11b in general, 802.11 Security gives you a broad basis in theory and practice of wireless security, dispelling some of the myths along the way. In doing so, they
WP150-解决数兆兆位及更高的网络挑战
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In today’s world of modular networking and telecommunications design, it is becomingincreasingly difficult to keep alignment with the many different and often changing int
基于MSP430F149的智能电池巡检系统的设计
介绍了电力操作电源与智能电池巡检系统的特点，给出了一种基于超低功耗单片机MSP430 F149针对中小型变电站自动化运行的专用设备的基本设计原理及实现方法，最后给出了详细硬件构成和软件实现。该系统能满足中小型变电站安全、可靠、自动运行的要求，并通过与上位机的串行通信实现变电站的远程管理和控制。
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MAXQUSBJTAGOW评估板软件
MAXQUSBJTAGOW评估板软件:关键特性 Easily Load and Debug Code Interface Provides In-Application Debugging Features Step-by-Step Execution Tracing Breakpointing by Code Address, Data Memory Address, or Register A
DN1014同步降压型控制器在汽车应用中的电池寿命延长
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Battery powered applications that have a signifi cantamount of time in standby mode, require electrical circuitsto operate with a low quiescent current to preserve batterylife.
基于AT89S52单片机的多功能音乐播放器
介绍一种多功能音乐播放器，它是以AT89S52单片机为核心，并辅有一些外围器件，采用汇编语言编写程序，实现多功能音乐播放，歌曲自动循环播放和使用琴键自编曲目功能。此外，彩灯显示歌曲节奏，按键跳转到喜爱曲目，液晶显示当前播英文曲目。并给出了系统软硬件设计。
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<DD> It introduces a multifun
确定任务参数的温度记录仪
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Logger iButton devices have gained a lot of popularity with researchers. Although free evaluation software is easy to use and welldocumented, the choices and inputs that need to be made can som
基于C8051F320的心电监护系统设计
介绍一种基于C8051单片机的动态心电监护系统。该系统由两部分组成：以C8051F320单片机为核心的数据采集装置和以PC机为平台的分析处理系统。硬件电路功耗低，由单片机自带的USB接口将数据传送给PC机。软件平台采用LabVIEW可视化虚拟仪器系统开发平台，将传统仪器的功能模块集成到计算机中，用户可通过修改虚拟仪器的程序改变其功能。采用USB接口实时传输心电数据，并将数据采集模块设计为计算机外设
H.264高清编解码器的片上系统MG3500
MG3500SoC是支持H.264高清编解码器的片上系统，内部集成一个嵌入式ARM926处理器，支持高清H.264编解码、MPEG鄄2解码和JPEG编解码。介绍了MG3500SoC的主要性能特点、引脚排列、主要接口功能及在DVR上的应用，以及MG3500SoC及其周围器件的硬件设计，提出了在设计中应注意的问题。
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XAPP144 -设计CPLD多电压系统
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Today’s digital systems combine a myriad of chips with different voltage configurations.Designers must interface 2.5V processors with 3.3V memories—both RAM and ROM—as wellas
基于AT89C51的智能矿井环境质量监控系统
<DD> 为满足矿井安全生产要求，介绍了一种以AT89C51单片机为主控器，对环境空气的温度、有毒易燃气体的浓度等进行检测的监控系统。该系统配合外围电路能实现对上述环境指标的控制并存储相关数据与上位PC机通信。它采用硬件抗干扰和软件抗干扰技术，以确保整个系统工作的准确性。 </DD>
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基于单片机系统的(24,16)循环码编码、译码方案
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在理论分析循环码编码和译码基本原理的基础上，提出了基于单片机系统的(24，16)循环码软件实现编码、译码的方案。仿真结果表明(24，16)循环码能有效地克服来自通讯信道的干扰，保证数据通信的可靠及系统的稳定，使误码率大幅度降低。本论文对(24，16)循环码的研究结果表明，可以有效地降低错误概率和提高系统的吞吐量，实现纠错仅需要在接收端增加有限的存储空间和计算复杂度，具有一定的实用价值
XAPP098 - Spartan FPGA低成本、高效率串行配置
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This application note shows how to achieve low-cost, efficient serial configuration for Spartan FPGA designs. The approachrecommended here takes advantage of unused resources in a design, there
P54C-VR奔腾(R)微处理器的电源模块
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Providing power for the Pentium® microprocessor family isnot a trivial task by any means. In an effort to simplify thistask we have developed a new switching regulator contr
基于ZigBee技术的无线智能家用燃气报警系统
在研究传统家用燃气报警器的基础上，以ZigBee协议为平台，构建mesh网状网络实现网络化的智能语音报警系统。由于传感器本身的温度和实际环境温度的影响，传感器标定后采用软件补偿方法。为了减少系统费用，前端节点采用半功能节点设备，路由器和协调器采用全功能节点设备，构建mesh网络所形成的家庭内部报警系统，通过通用的电话接口连接到外部的公用电话网络，启动语音模块进行报警。实验结果表明，在2.4 GHz
Reading and Writing iButtons v
Abstract: This application note explains the hardware of different types of 1-Wire® interfaces and software examples adapted to this hardware with a focus on serial ports. Depending on the types o