基于ADSP-21160的液晶驱动电路设计

为了实现将VGA接口信号转换成模拟液晶屏的驱动信号,通过采用ADI公司的高性能DSP芯片ADSP-21160,完成伽玛校正、时基校正、时钟发生器、图像优化和控制信号的产生等驱动电路的主要功能。本文分析了硬件电路及系统功能的设计与实现,阐述了系统的软件流程。经实践证明,本文所设计的基于ADSP-21160的液晶驱动电路,实时性好、通用性强、高速高效,较好满足了TFT-LCD的使用要求。     

大型小区智能综合信息管理系统的设计

介绍了智能小区配电管理系统的硬件组成及基于ARM嵌入式系统的软件实现,包括系统任务的划分、GUI设计、负荷控制以及通讯系统的详细介绍,为其他基于嵌入式芯片的智能化监控系统提供了高性价比、图形化的高效开发模式。     

基于AT89S51单片机触摸屏的设计与实现

该设计是从触摸屏中输入手写体,通过电脑上的程序显示从触摸屏中输入的手写体,显示程序是基于VC＋＋6.0,设计采用的微处理芯片是AT89S51,通过单片机控制A/D转换,通过相应的通讯实现单片机与电脑之间的数据交换,实现了相应的通讯协议及字符数据的传输,并实现了相应的软件与硬件的调试,实验结果证明设计方法有效。     

CAN总线通信在组合式三相光伏逆变器中的应用

针对某一组合式三相光伏逆变系统需要,将DC-DC环节的功率信号传输到逆变环节以便对输出功率进行动态调节的问题,利用TMS320LF2407A的内嵌CAN控制器设计了一种在直流变换器和组合式三相逆变桥的DSP控制芯片之间进行功率信号传输,并通过PC机进行监控的CAN总线通信方案。阐述了该方案的工作原理、硬件电路、隔离措施、相关寄存器的配置以及软件设计流程。该方案无论软件和硬件都易于实现,并通过实验验证了方案的可靠性和实用性。     

基于DSP控制的多联空调内外机通讯的研究

采用DSP芯片控制室外机的多联空调机组,室内机往往采用单片机控制.通过对其内外机通讯系统的硬件和软件进行分析和研究,设计了一套控制方案.通过实验验证,通讯正确率可以达到98%以上,系统可以实时对用户要求做出反馈.     

DSP Builder在数字信号处理中的应用

目前数字信号处理（DSP）技术发展迅猛,在电子、通信、航天等领域DSP技术都有着十分广泛的应用.以往设计人员在进行DSP系统设计时通常采用DSP处理器或在FPGA上通过硬件描述语言（VHDL）实现,设计难度大,开发周期长.本文介绍的DSP Builder是Altera公司推出的一个DSP开发工具,允许设计者在Matlab中完成算法设计,在Simulink软件中完成系统集成,然后通过SignalCompiler模块生成Quartus II软件中可以使用的硬件描述语言文件,通过综合仿真后下载到FPGA芯片内,从而完成系统设计.与以往基于硬件语言的设计相比,这种设计流程更快、更容易.     

铅淬火炉温度智能测控系统的开发

为了实现铅淬火炉温度的精确控制,开发了温度智能测控系统.阐述了系统的硬件设计和软件实现,硬件包括温度传感器调理电路、数据采集电路、温度控制电路、单片机系统和串行通讯电路,软件是利用LabVIEW进行上位机的串行通讯、PID程序和人机界面的设计.最后分析了该温度智能闭环测控系统的动态精度,并给出实验结果进行验证,其控制精度可达到±1℃以内.     

基于ARM9和CS8900A的网络通信电路的设计及实现

介绍一种基于ARM9微处理器s3C2440A的嵌入式网络通信接口电路,该电路采用以太网控制芯片cs8900A实现了网络的互联。给出了硬件电路的设计和软件的设计思路,该设计方案具有硬件电路简捷、成本低、性能可靠等特点。     

基于MODBUS协议的DSP与PLC通信实现研究

采用MODBUS协议及MODBUS协议的RTU模式,完成了MODBUS协议的编写、协议底层硬件电路的设计和协议模块的软硬件调试,实现了DSP与PLC之间的数据传输。     

一种常用数字电路芯片功能检测系统

开发了一种芯片功能检测系统,该系统基于实践教学中的与非门、反相器、数据选择器、计数器、译码器、显示译码器等常用芯片进行设计,由上位机和硬件电路两部分组成。上位机用以实现对芯片功能表或真值表的输入、管理及发送;硬件电路负责接收功能表或真值表信号并完成芯片的检测,得出芯片是否损坏或功能是否正常的结果,并显示或报警。本系统可以降低数字电路实践中检测芯片的难度和复杂度,并提高准确度,为实验结果的正确性奠定了基础。     

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.