共查询到20条相似文献，搜索用时 78 毫秒
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《实验室研究与探索》2016,(5):77-81
针对目前MSP430单片机实验装置较少、实验内容少,而且无MSP430高端产品的实验装置,研制了基于MSP430F5529单片机的综合实验装置,主要包括MSP430 Launch Pad和母板两部分。较传统的单片机实验装置增加了模拟电路的设置,设计的实验能够利用单片机的所有外设,可进行模块基础实验和综合实验两大类实验,非常适合自动化和电气信息类大学生学习使用。 相似文献
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该文介绍了MSP430单片机性能特点,结合MC14433A／D转换器的外部特性,给出MC14433与MSP430F449的接口电路及程序设计方法。实现模拟信号转换为计算机要求的数字信号。该电路接口简单．能较好地控制模拟信号的采集和转换。 相似文献
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基于MSP430F5438A单片机的交流变频器的设计 总被引：1，自引：0，他引：1
设计的交流变频器由MSP430单片机电路、数码管显示和键盘电路、二极管整流电路、二极管整流保护电路、IPM模块电路等几个模块电路组成.数码管显示及键盘模块电路和IPM模块电路由单片机直接控制;电压整流部分是由二极管整流电路及其整流保护电路来控制;最后由单片机产生6路SPWM脉冲来实现对三相交流电机转速的开环控制. 相似文献
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设计了以超低功耗的MSP430单片机为核心的数据采集与传输系统,基于MSP430F449对人体的心电信号进行采集并通过RS232通信接口实现与上位机的数据传输,将处理好的信号再通过GPRS 无线传输模块发送至医院监护中心.利用液晶显示模块LMS091A与K9F1G08X0A存储模块使用户在家中更方便的观察病情,此系统适合应用于各种临床病症的检测和诊断. 相似文献
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彭仁明 《绵阳师范学院学报》2009,28(11):28-31
智能小车控制系统由MSP430F149单片机系统、信号指示、电源管理、无线数据收发、电动机驱动电路等构成。手持无线数据传输部分负责设置轨道（圆的半径,正方形的边长,三角形的边长）和传送相关数据给小车,小车收到数据后自动计算运动轨迹而无需遥控,具有通讯范围指示,采用自定义通讯协议。检测结果达到了设计要求。 相似文献
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基于MSP430F449单片机的24BYJ48步进电机控制 总被引：1，自引：0，他引：1
该文介绍了步进电机工作原理,结合MSP430F449单片机,给出MSP430F449单片机的24BYJ48步进电机控制的接口电路及程序实现。文章介绍的硬件和软件均经过实践检验,结构简单,使用方便。 相似文献
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基于MSP430F2001设计了一种单片机与PC机串行通讯最小系统,给出了系统硬件原理图、通讯协议以及软件流程图。该系统可以实现单串口和分时双串口通讯,特别适合于低成本串行通讯应用场合。实际使用证明,该系统具有可靠性高、功耗低、使用简便、适用场合广泛等特点。 相似文献
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李德明 《湖北成人教育学院学报》2013,19(2)
本设计采用红光LED和光敏三极管设计出手指脉搏信号检测电路,经多级滤波电路处理,提取脉搏信号.以MSP430F169超低功耗单片机作为控制核心,配合LCD实时显示脉搏的信号波形及速度等相关参数. 相似文献
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罗艳萍 《读与写:教育教学刊》2008,5(6)
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. 相似文献
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Richard Denner 《海外英语》2007,(4):14-15
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. 相似文献
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Given a graph G,a subgraph C is called a clique of G if C is a complete subgraph of G maximal under inclusion and |C|≥2. A clique-transversal set S of G is a set of vertices of G such that S meets all cliques of G. The clique-transversal number, denoted as TC (G), is the minimum cardinality of a clique-transversal set in G. The clique-graph of G, denoted as K (G), is the graph obtained by taking the cliques of G as vertices, and two vertices are adjacent if and only if the corresponding cliques in G have nonempty intersection. Let F be a class of graphs G such that F={G|K(G) is a tree}. In this paper the graphs in F having independent clique-transversal sets are shown and thus TC (G)/|G|≤1/2 for all G ∈ F. 相似文献
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《海外英语》2007,(5):10-11
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? 相似文献
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陈美曦 《山东教育学院学报》2008,23(2):103-107
Different nations have different social cultures, and the social culture of every nation is developing with the development of the nation, language is greatly influenced by social culture, which enables language to possess national and historical characteristics. Word is the smallest, independent, meaningful linguistic unit of language. It can well reflect the national and historical characteristics. From synchronic aspect, the social and cultural influence on word meaning is mainly embodied in conceptual and associative meanings of word. The incorrespondence of word meaning is a phenomenon that exists in both conceptual and associative meanings of word among different languages. From diachronic aspect, the development of social culture causes some changes of word meaning to some extent. Therefore, social culture plays a key role in vocabulary learning and mastery of a language. 相似文献
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邱崇丙 《唐山师范学院学报》2014,(1):21-23
汉字的六书,《说文》对“转注”一类,语焉不详。后世学者提及转注,也仅限于许慎所举出的例字。《汉字例说》一文,作者从转注的角度综合考虑,对部分现代常用字作了分析,跟传统的解释有所不同。希望能抛砖引玉,互相切磋,以推进学术研究。 相似文献
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《海外英语》2007,(4):36
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. 相似文献