[文章/文档] 防火墙
越来越多的私有网络连入公有网，网络管理员面临一个问题：
如何合法访问的同时，对非法访问的控制
需要在网络的边缘部署防火墙
As more and more private networks are connected to public networks, network administrators are facing a problem:
How to Control Illegal Access while Visiting Legally
Firewalls need to be deployed on the edge of the network (2019-06-23, PPT, 490KB, 下载0次)
[其他] eetop.cn_ubuntu 9.10 DC200809 假蚾 芞賤...[1]
This page links to installation information for major Synopsys releases, which occur in March, June, September, and December. In the table below, click the document link for the release you need (or check the link associated with your product release date).
You can also find installation information on the product software physical media (such as CD, DVD, or flash drive) and in the product_INSTALL_README.txt file in the product EST download directory.
This page links to installation information for major Synopsys releases, which occur in March, June, September, and December. In the table below, click the document link for the release you need (or check the link associated with your product release date).
You can also find installation information on the product software physical media (such as CD, DVD, or flash drive) and in the product_INSTALL_README.txt file in the product EST download directory. (2018-11-20, PPT, 692KB, 下载0次)
[通讯编程] 中国无线电频率划分图
中国无线电频率划分图
为了充分、合理、有效地利用无线电频谱资源，保证无线电业务的正常运行，防止各种无线电业务、无线电台站和系统之间的相互干扰，根据《中华人民共和国无线电管理条例》、国际电信联盟《无线电规则》和我国无线电业务发展的实际情况，制定《划分规定》。
Radio frequency division map of China (2017-08-02, PPT, 2536KB, 下载9次)
[文章/文档] 正态分布详解
正态分布的一个很好的课件，非那种艰涩的纯抽象讲解，有各种具体的案例，比较适合初学者深刻理解正态分布的内涵
This is a very good courseware handouts to the normal distribution. Instead of common pure abstract explanation, there are a variety of specific cases, more suitable for beginners to understand the profound connotation of normal distribution (2017-07-13, PPT, 1426KB, 下载2次)
[其他书籍] Modern-Switching-Technology
现代交换技术PPT 话音信号的数字化基础
数字交换机的话路部分
程控交换系统控制
程控交换机的控制软件
呼叫处理的基本原理及话务基本理论
交换技术基础
电话通信网
信令系统
典型机介绍
Digital voice signal
Digital switches road section
SPC switching system control
SPC exchange control software
The basic principle of call processing and the basic theory of traffic
Switching technology based
Telephone communications network
Signaling system
A typical machine introduction (2016-01-06, PPT, 7602KB, 下载3次)
[单片机开发] CTBNBP
互动电视业务和传统电视业务的本质区别在于老百姓实现了“从看电视->到用电视->娱乐电视”的转变，运营商实现了“从传统单一的收视费盈利模式->复合型的立体收入模式”的转变，所以要成功实现“革命性”的突破，让老百姓养成“要用->可用->愿意用（黏住）->喜欢用（离不开）”互动电视业务的习惯，产生旺盛的人气是核心工作，随着双向互动业务项目的实施，我们和运营商即将面临的三个棘手核心问题：
1.如何打造一个可运营的成熟互动电视产品，让老百姓感到互动不再陌生，互动成为一种生活习惯……
2.如何形成良好的运作体系，能够保障互动电视业务内容的安全、高效运营……
3.如何快速发展用户，让互动电视顺利进入千家万户……
Interactive television services and conventional television services essential difference between people realized "from watching TV-> to use the TV-> Entertainment Television" changes, operators achieve a "single subscription from the traditional profit model-> complex three-dimensional revenue model "changes, so to successfully achieve the" revolutionary "breakthrough, so that people become" use-> Available-> willing to use (stick)-> like to use (inseparable) "interactive television services in the habit generate strong popularity is the core work, with two-way interactive services project implementation, we and operators will face three tough core issues:
1 How to create an interactive television operators mature product, so that people no longer feel strange interaction, interactive become a lifestyle ......
2 How to create a good operation of the system, to protect the business of interactive television content safe and efficient operation ......
3 How fast dev (2013-09-20, PPT, 12657KB, 下载2次)
[嵌入式Linux] The-Ture-TCP-RF-Deveice
这是本人耗费2周时间精心制作的PPT演示动画文档，专门讲述嵌入式纯以太网一卡通设备的真假区分。绝对原创！
This is the time I spent two weeks carefully crafted animation PPT document devoted to pure Ethernet card embedded devices distinguish between true and false. Absolute originality! (2013-08-03, PPT, 73KB, 下载2次)
[系统设计方案] network-war
简述电子战、网络战在信息战中的地位, 深入分析了电子战、网络战在信息战中相关性、独立性, 阐述网
络战与电子战的有机结合即“网电一体战”将成为信息作战的基本形态。
The paper discuss the po sition of the electr onics w ar and net wo rk w ar in the informatio n w ar , analysis the relativ ity
and independency of the electr onics w ar and netw or k w ar in the info rma tio n wa r. Expound the integr ation o f t he electr onics war and
netw or k war . T he incor po ra te electr onics w ar and t he net wo rks w ar , will become the basic campaig n mo dality of the information
w ar. (2012-08-03, PPT, 6274KB, 下载24次)
[网络编程] High-Speed-Network
高数网络技术的全部课件。
第1章 IP地址的应用
第2章 网络互联设备
第3章 高速局域网
第4章 局域网管理
第5章 高速广域骨干网
第6章 接入网技术
第7章 无线网络技术
第8章 HFC网络
第9章 虚拟网络技术
High number of network technology courseware. Chapter 1 of the IP address of the application of Chapter 2, Chapter 4, Chapter 3, high-speed LAN networking equipment LAN Management Chapter 5 high-speed wide-area backbone network in Chapter 6, Section 9 of the HFC network, Chapter 8, Chapter 7 of the network technologies of wireless network technology Zhang virtual network technology (2012-06-20, PPT, 24573KB, 下载4次)
[系统设计方案] caideng
彩灯课程设计
一、 课程设计目的
现代生活中，彩灯越来越成为人们的装饰品，它不仅能美化环境，渲染气氛，还可用于娱乐场所和电子玩具中，现以该课题为例进行分析与设计。通过本次课程设计要学会将一个实际情况抽象为逻辑电路的逻辑状态的方法，掌握计数、译码、显示综合电路的设计与调试，
掌握实际输出电路不同要求的实现方法
Lights course design
A, course design purpose
In modern life, lights, has become a more and more people adornment, it can not only beautify the environment, rendering the atmosphere, and also can be used for entertainment and electronic toys, now with the subject as the example analysis and design. Through this course design should learn to a practical situation for abstract logic circuit of the logical state of method, grasps the counting, decoding, show the design of integrated circuit and debugging,
Master the output circuit different requirements method
(2011-12-11, PPT, 21KB, 下载2次)
[软件设计/软件工程] PLC
可编程控制器（PLC）是集计算机技术、自动控制技术、通信技术为一体的新型自动控制装置。其性能优越，已被广泛地应用于工业控制的各个领域。在电力工业中，应用可编程控制器的场合比比皆是。例如电厂输煤系统、锅炉燃烧系统、汽轮机和锅炉的起动及停车系统、废水处理系统、发电机和变压器监控系统、整个电力网的联网通讯、调度及控制、利用可编程控制器进行软动控制等等。PPT内容详细介绍了工业控制plc语言的功能及其具体使用。
Programmable controller is a computer technology, automatic control technology, communication technology as one of the new automatic control device. Its superior performance, has been widely used in industrial control fields. In the power industry, the application of programmable controller applications abound. For example, power plant coal handling system, boiler combustion system, turbine and boiler start and stop system, wastewater treatment systems, generators and transformer monitoring system, the entire power grid network communication, scheduling and control, the use of programmable controllers for motion control software and so on. PPT and detailed description of the industrial control plc and its specific use of language features. (2011-07-29, PPT, 1479KB, 下载11次)
[软件工程] chapter17
网上购物订单系统的UML图分析，包括用例图、活动图、时序图等
Online shopping order system of the UML diagram analysis, including use case diagrams, activity diagram, sequence diagram, etc. (2011-05-31, PPT, 1123KB, 下载65次)
[Windows编程] mapinfo
在网优工作中，我们经常需要进行区域指标分析。例如：全网各PA区paging次数、每CSC话务量等。有效利用MapInfo软件，对于我们的工作会有很大的帮助。
现以分析全网各PA区paging次数为例，简单介绍一下MapInfo的用法，希望能对大家有所帮助
no have! (2010-04-28, PPT, 1381KB, 下载2次)
[搜索引擎] searchDocument
搜索引擎是随着WEB信息的迅速增加， 从1 995年开
始逐渐发展起来的技术， 即提供信息检索服务的计算机系
统。检索的对象包括互联网上的站点、新闻组中的文章、
科技文献资料、软件存放的地址及作者、某个企业和个人
的主页等。搜索引擎的性能主要取决于索引数据库的容
量、存放内容、更新和搜索速度，是否易用等。搜索引擎
是以传统信息检索技术为基础，利用其索引模型、匹配策
略等方面的技术成果并针对Web资源的特点发展起来的信
息检索技术，涉及多领域的理论和技术：数据库、信息检
索、人工智能、自然语言处理、统计数据分析、数据挖
掘、计算机网络、分布式处理等。因此，搜索引擎是互联
网的第二大核心技术，具有很强的综合性和挑战性。
full-text search (2009-06-25, PPT, 2227KB, 下载112次)
[系统设计方案] ARP
本课件详细介绍了以太网以及ARP防火墙的基本概念以及如何设置防火墙才能增强我们电脑的安全性。 对有电脑的人来说是很不错的教程。
The courseware, as well as detailed information on Ethernet ARP firewall, as well as the basic concept of how to set up a firewall in order to enhance our computer security. On the computer is a very good tutorial. (2009-06-03, PPT, 1565KB, 下载5次)
[软件工程] BA
系统网络拓扑结构采用共享总线型，大型网络控制器NCE通过BACnet MS/TP现场总线连接下位的小型多功能DDC控制器FEC，实现数据共享和分散控制
System network topology using a shared bus-based, large-scale network controller NCE through the BACnet MS/TP field bus to connect the next bit of small multifunctional DDC controller FEC, data sharing and distributed control (2009-01-07, PPT, 1353KB, 下载159次)
[通讯编程文档] dbyl.ppt
中兴内部培训材料，单板原理
1、功能：
作为ＺＸＪ１０机中央控制部分、完成呼叫处理及系统管理功能
控制交换网的接续
提供前台程序运行平台、运行ＤＯＳ、ＩＲＭＸ等软件
提供两个以太网接口
负责前／后台间数据、命令的传送
实现与各子单元ＳＰ的消息通信
控制主／备ＭＰ倒换
ZTE-house training materials, veneer Principle 1, function: As part of the central control ZXJ10 machine to complete the call processing and system management functions control the switching network to provide the follow-up program runs front platform, running DOS, IRMX software offers two Ethernet interface responsible for pre/background data, order transmission to achieve with the sub-unit communication control information SP Master/Preparation MP switching (2008-04-16, PPT, 285KB, 下载16次)
[Windows编程] C++ppt
面向对象程序设计，C++课件，ppt格式，请解压缩后用powerpoint打开。
Object-oriented programming, C++ Courseware, ppt format, please extract powerpoint to open later. (2008-01-19, PPT, 225KB, 下载117次)
[通讯编程] zfzyl
直放站的原理与应用,直放站是随着移动通信的发展而出现的一种无线通信设备。直放站的大量应用是近两年的事情，尤其随着CDMA 网开通和GSM 网的深度覆盖，制造厂家明显多，各种各样的直放站应运而生，直放站已经成为无线网络覆盖中的重要设备。
Repeater and application of the principle, Repeater, with the mobile communication and the development of a wireless communications equipment. Repeater is the large-scale application of things of the past two years, particularly as the CDMA Network and the depth of GSM network coverage, manufacturers obviously, Repeater variety of crops, Repeater has become the wireless network coverage of important equipment. (2007-04-24, PPT, 62KB, 下载13次)
[图形图像处理] 611
矩阵中的每一个元素称为像元、像素或图像元素。而g(i, j)代表(i, j)点的灰度值，即亮度值。
由于g (i, j)代表该点图像的光强度（亮度），而光是能量的一种形式，故g (i, j)必须大于零，且为有限值，即： 0<=g (i, j)<2n。
用g (i, j)的数值来表示(i, j)位置点上灰度级值的大小，即只反映了黑白灰度的关系。
数字化采样一般是按正方形点阵取样的，
矩阵中的每一个元素称为像元、像素或图像元素。而g(i, j)代表(i, j)点的灰度值，即亮度值。
由于g (i, j)代表该点图像的光强度（亮度），而光是能量的一种形式，故g (i, j)必须大于零，且为有限值，即： 0<=g (i, j)<2n。
用g (i, j)的数值来表示(i, j)位置点上灰度级值的大小，即只反映了黑白灰度的关系。
数字化采样一般是按正方形点阵取样的， (2007-01-25, PPT, 896KB, 下载8次)