existence
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existence 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 20 篇文章，持续更新中。
Windows CE 编程(英文第二版)
·Ive been working with Windows CE for almost as long as its been in existence. A Windows programmer for many years, Im amazed by the number of different, typically quite small, systems to which I can
用MC68HC708MP16实现电机控制的相关设计及技术指南
The quality of life we enjoy today can easily be correlated to the<BR>existence of the electric moto
基于AT89S52单片机的教室照明自动控制系统
<p>本课题旨在实现教室照明的智能化,分析了教室照明的目前情况和原理的实现方法,并构思出在52单片机上设计的教室自动照明智能化的思路,并在此基础上提出了实现教室照明的控制方案。该系统采用AT89S52单片机作为控制模块的核心部件,利用HP208人体传感器检测人体的存在,并使用由光敏三极管组成的电路来测量自然光的强度;教室照明开关的条件,是基于是否检测到人和光照的强度并加上定时开关时间。信号和环境照
基于单片机的教室智能照明系统
<p>本文主要介绍了一种AT89S52单片机为核心的教室灯光自动控制系统,针对学校商场等室内灯光的控制现状以及大量浪费能源浪费问题详述了系统的硬件设计和软件设计思路。重点研究了热释红外传感器如何检测人体的存在和光敏三极管构成的电路如何检测环境光的强度。根据教室里的自然条件,系统会通过对人体信号的检测和光照强度的信号识别自动加以判断,构成对教室照明回路的智能控制。该系统控制方便可靠,节约成本性价比高
基于单片机的智能教室照明系统的设计
<p>该文介绍如何设计一种基于单片机的智能教室照明系统,采用STC89C52单片机作为主控芯片,使用热敏电阻和热释电传感器分别实现教室内的光照度以及人体存在信息的采集;使用光驱动芯片PT4115结合基于PWM的调光方法,通过改变输入波形的脉冲宽度即可调整LED光源的亮度。还可通过单片机设定自动和手动两种模式,以便适应复杂的高校教室用灯环境,实现教室照明系统的智能化和人性化,达到节能环保的目的。</
汽车智能检测自救报警系统优化设计
<p>汽车是人们现代生活中重要的交通工具,人们在追求汽车带来的经济、便利、高效的同时往往会忽略汽车中所存在的安全隐患,为此,本文结合威驰车的实际状况对智能自救报警装置控制系统进行优化,该装置通过STC89C51单片机进行信号检测与控制,可以判断车内环境是否安全,能够及时报警并降车窗,通过通讯模块发送短信并拨打求救电话完成自救,保证车内人身安全。</p><p>In people's mode
Telecommunication+Circuit+Design+2nd
The first edition of this book was published in 1992. Nine years later it had become<br />
clear that a second edition was required because of the rapidly changing nature of<br />
telecommunication. I
Silicon-Based+RF+Front-Ends
Ultra-wideband (UWB) technology enables high data-rate short-range communica-<br />
tion, in excess of hundredmegabit-per-secondsand up to multi-gigabit-per-seconds,<br />
over a wide spectrum of freq
Practical+Wireless+Data+Modem+Design
Without doubt, the age of information communications is upon 11s. The rapid<br />
pace of technological advancement in digital data communications can be wit-<br />
nessed in a
OFDM+Wireless+LANS
Before delving into the details of orthogonal frequency division multiplexing (OFDM), relevant<br />
background material must be presented first. The purpose of this chapter is to provide the necessar
Fundamental Limits on a Class of Secure
Abstract—In the future communication applications, users<br />
may obtain their messages that have different importance levels<br />
distributively from several available sources, such as distributed<
The existence of numerous imaging modalities makes it possible to present different data present in
The existence of numerous imaging modalities makes it possible to present different data present in different modalities together thus forming multimodal images. Component images forming multimodal im
JASML is a java byte code compiler, providing yet another approach to view, write and edit java clas
JASML is a java byte code compiler, providing yet another approach to view, write and edit java classes, even without the existence of a java source file - using the java macro instructions, those des
Constitution lord the headline of the window way Record the managing person of the debarkationManag
Constitution lord the headline of the window way
Record the managing person of the debarkationManaging person s number of your importation already existence, please afresh importation
-The existence of numerous imaging modalities makes it possible to present different data present in
-The existence of numerous imaging modalities makes it possible to present different data present in different modalities together thus forming multimodal images. Component images forming multimodal i
平均因子分解法
平均因子分解法，适用于正定矩阵First, let s recall the definition of the Cholesky decomposition: Given a symmetric positive definite square matrix X, the Cholesky decomposition of X is the factorization X=U U, where
Check customer the legitimacy of the importation Check this book number whether already existence
Check customer the legitimacy of the importation
Check this book number whether already existence
Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by E
Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee
can be given as to the existence of other IPRs not referenced in ETSI SR 000 314
Student result management system Use the C language realization system 2, the data structure mak
Student result management system
Use the C language realization system
2, the data structure making use of the structure body several realization student s result design
3, the system have incre
Windows CE 编程(英文第二版)
·Ive been working with Windows CE for almost as long as its been in existence. A Windows programmer for many years, Im amazed by the number of different, typically quite small, systems to which I can