微机USB接口的应用开发

通用串行总线USB具备速度快但又提供低速方式、支持热拔插、易于扩展、总线供电、使用灵活等优点，通过分析USB通用串行总线系统各通信模型层次关系和信息传输的基本工作原理，了解USB接口的内部结构和检测通信的要领及设备驱动方式，研究在Windows环境下通过Visual Basic语言，调用API函数实现工业控制及其他应用USB接口的方法，对新补充的OTG技术也作简单介绍，最后用一个实例介绍USB接口如何进行设备检测和通信。     

Java语言与C语言的接口分析

Java语言是目前信息产业界最热门的语言,但是Java语言并不是万能的,如Java语言不能直接访问硬件,解决的方法是,可以通过Java调用由其他语言所编写的函数来实现对硬件的访问,如C或C 语言。文章通过实例介绍了一种如何实现在Java程序中调用C或C 函数的方法。     

基于API函数的RS-232串行通信的实现

本文阐述了Windows系统串行通信的机理 ,介绍了微机RS -232串行通信的一般步骤 ,探讨了在Win dows平台上使用VC 6.0调用API函数进行串口通信的编程方法 ,给出了函数原型和程序代码     

PDA设备的串行通信程序设计

讨论了基于WindowsCE的PDA设备串行通信程序的设计方法 ,介绍了与串行通信有关的部分Win32API函数 ,并给出具体的例子描述怎样使用API函数对串口进行操作     

Java语言中的元数据机制及其应用

在介绍Java元数据机制的基础上,描述基于Java元数据功能的数据库浏览器的实现方法。Java语言提供了反射API,用于动态获取对象式类的结构信息,Java Annotation被用来在Java程序中描述元数据。     

基于低功耗的Java程序设计优化技术

目前各类智能移动设备在大量使用基于Java平台的软件,分析与研究Java语言程序的低功耗编程技术具有重要的现实意义。从源程序设计角度分析了可降低Java软件能耗的各种编程技术。     

基于Web开发技术实现PHP调用Java类研究

在“互联网+”时代,Web开发技术日新月异,平台开发不再依靠同一种Web开发技术,跨平台调用数据也屡见不鲜。为提高PHP的跨平台性和扩展性,通过PHP和Java桥接技术,真正实现Web三层架构。针对PHP和Java在技术引用上存在互补的特点,利用php Java bridge桥接方式,使用PHP程序调用jar里的Java类以判断Java版本、服务器操作系统以及操作系统版本,同时使用PHP程序调用自定义jar类的Reducefloat方法,完成减法运算。将两种技术有效结合起来,使通过PHP开发新接口程序需要调用Java方法时,可以减少对原有服务端程序的修改,为PHP开发技术的跨平台性和扩展性提供了技术论证。     

Windows CE5．0平台下Winsock编程的应用

论述了Windows CE的网络通信体系结构以及Windows CE下的Winsock网络编程的基本原理,然后使用eMbedded Visual C＋＋4．0,调用Windows CE平台提供的Socket API函数。实现了基于Windows CE的客户端和桌面Windows系统的服务器的通信．     

基于Android的飞机无纸化维修工作单系统软件设计

为了解决飞机纸质版维修工作单易损坏、难储存、浪费纸张、查询繁琐、图表不清晰等缺点。在Android开发环境下,设计具备存储、索引、内容浏览、批注签字与地面维修中心网络传输功能的飞机无纸化维修工作单系统软件。其软件程序设计采用可扩展标记语言和Java语言编程相结合方式。可扩展标记语言实现与维修人员交互的各类界面、布局、控件等可视化资源;Java语言实现飞机无纸化维修工作单系统各项设计功能,通过扩展标记语言生成的可视化资源实现调用和运行。采用以基于Linux内核的手持式电子移动设备为载体,实现飞机无纸化维修工作单系统软件的运行和维修人员的操作,为飞机维修工作单无纸化提供一种设计方法。模拟运行和操作结果表明,该系统满足了飞机维修工作单使用效率等实际需求。     

运用JDBC技术连接和操作MySQL数据库的方法

Java语言是目前应用非常广泛的面向对象的计算机编程语言,主要应用在基于B/S模式下的程序开发、Web网络应用程序开发和嵌入式程序开发等。在实际的项目开发中,无论是单机应用程序还是网络应用程序,都要涉及到Java语言频繁的操作和调用数据库。所以对数据库的使用和操作是核心的知识,掌握了Java程序对数据库操作的方法步骤和技巧运用,就会使程序的开发变得快捷和轻松,从而提高了项目的开发效率。     

卡思卡特城堡

It is worthy of noting that, whilst Crookston Castle witnessed the earlier and happier portion of Mary's variegated life,     

不同的吃喝玩乐

一、吃和喝吃苹果 eat an apple, 吃药 take medicine,吃糖 have some sweets,吃饭 have one's meals,吃馆子 dine out,吃惊 be surprised/     

漏洞百出的教育

Many college freshmen arrive woefully unprepared to do college work, and as disadvantaged populations continue to grow, the share of the American work force that has made it through college is expected to plummet. Many experts blame that educational failure not just on high schools but also on colleges. School & College, a special report by The Chronicle, looks at efforts to fix the system. What reforms would better prepare students for college? What should schools and colleges be doing differently? How should state and federal officials help?     

Western and Eastern culture differences in commercial field

The communication of people partially is the communication of cultures. Culture has a direct effect on international commercial activities in all aspects. Different conceptions about time, space, equality, law and the like, lead people to deal with things in different ways. So to know cultures of the counterpart is to facil-itate our enterprises so as to have a smooth and successful communication in commercial activity.     

只要努力,不要后悔

There are numbers of crossroads on our long and unpredictable life journey where we totally have no idea about which direction to choose. No matter what our decision is, we should not turn back, but face the music and go ahead instead. I am this kind of girl who always does try without regretting, one example is how I dealt with my love.     

浅谈移民问题

Migration occurs behind a variety of reasons and has a great effect on the whole world. People may migrate in order to improve their economic situation, or in order to escape civil strife, persecution, and environmental disasters. The impact of migration is complex, bringing both benefits anddisadvantages. This paper briefly talks about the causes of migration, the allocation of benefits, and the ways in which individual countries and the international community deal with this important subject.     

Sister Carrie, an Adherent of Desires

Sister Carrie is one of the most controversial characters in American literature.Thought as a "fallen woman" firstly,she was defined as a "new woman" by some critics later. However, by digging into the motivaton behind the whole process of Carrie's "success", the relationship between Carrie and her creator (the author), the social conditions of then American, it can be found that Carrie has never been free-standing on her thought and she has never found her real-sdf even after becoming a famous actress. In a society dominated by mass consumerism Carrie is only an adherent of her own desires. She also is a representative of all those country girls flooded into cities, a symbol and a sacrifice of the urbanization of America in a time countryside was overcome by cities.     

Improvement of one-cycle controller by use of proportional integral differential controller

1.IntroductionOne-cyclecontrolmethod,whichwasproposedaboutonedecadeago[1],hasbecomeanattractivemethodinspecialfieldssuchaspowerfactorcorrection[2-6],switchingamplifiers[7,8],etc.Themainideaofthiscontrollerisbasedonintegrationofdiodevoltageinone-cycleandforcesittobeexactlyequaltothereferencevalue.Themainadvantageofthiscontrollerisitsrealtimeabilitytorejectthevariationofinputvoltage[1].Despitethisgreatability,ithasnogoodperformancesinrejectingofloaddisturbanceandfollowingreferencecommands.Espec…     

风的曲线

Rosco and I wait for the fishermen to return.I sit at a wooden bench near the store at Mt.Baker Resort and watch the clouds change shape. Rosco has my belt around his neck and an eight foot tow chain hooked to a tree. Dogs must be on a leash. Ducks and rabbits are loose.