毕业论文 （或毕业设计） 文献综述 文献综述题目 （中文小二号黑体居中或英文Times New Roman小二号加粗居中或日文明朝体小二号加粗） 学生姓名指导教师 二级学院专业名称 班级学号 年月日
（标题Times New Roman三号加粗） The Literature Review of The Mystery of Antonio’s Sadness in The Merchant of Venice （正文用Times New Roman小四，1.5倍行距，各段首行空4个字符，书名用斜体加粗） Written sometime between 1596 and 1598, The Merchant of Venice is classified as both an early Shakespearean comedy (more specifically, as a "Christian comedy") and as one of the Bard's problem plays; it is a work in which good triumphs over evil, but serious themes are examined and some issues remain unresolved. In The Merchant of Venice , Shakespeare wove together two ancient folk tales, one involving a vengeful, greedy creditor trying to exact a pound of flesh, the other involving a marriage suitor's choice among three chests and thereby winning his (or her) mate. Shakespeare's treatment of the first standard plot scheme centers around the villain of Merchant, the Jewish moneylender Shylock, who seeks a literal pound of flesh from his Christian opposite, the generous, faithful Antonio. Shakespeare's version of the chest-choosing device revolves around the play's Christian heroine Portia, who steers her lover Bassanio toward the correct humble casket and then successfully defends his bosom friend Antonio from Shylock's horrid legal suit. Antonio, as the title character, is sad from the beginning to the end of the play but never names the cause of his melancholy even when his friends ask him. Antonio plays the role as an outcast in the play. Shakespeare uses Antonio’s sadness simply as the device to set the tragic tone in the comedy or make Antonio be one of his melancholic characters in his works? Or Antonio is the representative of the complicated human nature? Antonio's unexplained melancholy is a significant element in understanding the play. 1. Studies on The Merchant of V enice（Times New Roman + 四号+首缩进4字符，下同） Karl Marx once cited that Shakespeare is the greatest playwright in the world.
高中英语作文万能句子英语优美句子摘抄 有很多的同学是非常的想知道，高中英语作文万能句子有哪些，英语优美句子是什么，小编整理了相关信息，希望会对大家有所帮助！ 高中英语作文万能句型 1.关于……人们有不同的观点。一些人认为…… There are different opinions among people as to ____ .Some people suggest that ____. 2.俗话说(常言道)……，它是我们前辈的经历，但是，即使在今天，它在许多场合仍然适用。 There is an old saying______. It’s the experience of our forefathers，however，it is correct in many cases even today. 3.现在，……，它们给我们的日常生活带来了许多危害。首先，……;其次，……。更为糟糕的是…… Today, ____, which have brought a lot of harms in our daily life. First, ____ Second,____. What makes things worse is that______. 4. 现在，……很普遍，许多人喜欢……，因为……，另外(而且)……。 Nowadays, it is common to ______. Many people like ______ because ______.Besides，______.
5. 任何事物都是有两面性，……也不例外。它既有有利的一面，也有不利的一面。Everything has two sides and ______ is not an exception，it has both advantages and disadvantages. 6. 关于……人们的观点各不相同，一些人认为(说)……，在他们看来，…… People's opinions about ______ vary from person to person. Some people say that ______.To them,_____. 7. 人类正面临着一个严重的问题……，这个问题变得越来越严重。 Man is now facing a big problem ______ which is becoming more and more serious. 8. ……已成为人的关注的热门话题，特别是在年青人当中，将引发激烈的辩论。______ has become a hot topic among people，especially among the young and heated debates are right on their way. 9. ……在我们的日常生活中起着越来越重要的作用，它给我们带来了许多好处，但同时也引发一些严重的问题。 ______ has been playing an increasingly important role in our day-to-day life. It has brought us a lot of benefits but has created some serious problems as well. 10. 根据图表/数字/统计数字/表格中的百分比/图表/条形图/成形图可以看出……。很显然……，但是为什么呢? According to the figure/number/statistics/percentages in the /chart/bar graph/line/graph， it can be seen that ______ while. Obviously, ______, but why? 励志优美英语句子 1、 "The meeting was scheduled for two hours, but it is now over yet. 会议原定了两个小时，不过现在还没有结束。" 2、 Am I allowed to stay out past 10? 我可以十点过后再回家吗？ 3、 Are you sure you can come by at nine? 你肯定你九点能来吗？ 4、 When is the store closing? 这家店什么时候结束营业？ 5、 What is your plan? 你的计划是什么？ 6、 Where is your office? 你们的办公室在哪？ 7、Let’s have a beer or something. 咱们喝点啤酒什么的。 8、 Let me explain why I was late. 让我解释迟到的理由。
速卖通的运作商业模式 从2009年8月6日起，阿里巴巴小额外贸批发及零售平台全球速卖通正式进入试运行阶段，该平台目前依附于阿里巴巴国际站，为阿里巴巴国际站的一部分，目前只向已付费的中国供应商会员开放。速卖通是阿里系列的平台产品，整个页面操作中英文版简单整洁，适合初级卖家上手。另外，阿里巴巴一直有非常好的社区和客户培训体系，可以快速入门。全球速卖通是阿里巴巴帮助中小企业接触终端批发零售商，小批量多批次快速销售，拓展利润空间而全力打造的融合订单、支付、物流于一体的外贸在线交易平台。此平台适合体积较小，附加值较高的产品，比如首饰、数码产品、电脑硬件、手机及配件、服饰、化妆品、工艺品、体育与旅游用品等相关产品。速卖通的特点是价格比较敏感，低价策略比较明显，这也跟阿里巴巴导入淘宝卖家客户策略有关，很多人现在做速卖通的策略就类似于前几年的淘宝店铺。速卖通的侧重点在新兴市场，特别是俄罗斯和巴西。对于俄罗斯市场，截至2015年底，每月登录全球速卖通服务器的俄罗斯人近1600万，现在的注册更加火爆。速卖通作为阿里巴巴未来国际化的重要战略产品，已成为全球最活跃的跨境电商平台之一，并依靠阿里巴巴庞大的会员基础，成为目前全球产品品类最丰富的平台之一。 速卖通秉承淘宝战法以“价格为王”，平台准入门槛低，平台佣金也较ebay和亚马逊较低些，这就导致很多创业者涌入，同质化竞争相对比较激烈些，很多卖家通过低价格才能有优势(其中不乏用技巧获取高额利润的卖家)，另外速卖通会有惊喜：来自阿里巴巴的小额批发订单，假使单一品类的产品供应链非常全，非常有竞争优势，做速卖通很快就可以成功，要是打价格战，其他小卖家必死无疑。把产品不停地传上去，把价格调低，厉害的卖家直接找工厂拿出厂价或者用清库存的打法，对于其他中间商来说就是致命的打击，根本让人无路可走。有没品牌无所谓，只要有价格优势就可以。 1）全球速卖通平台提供的产品是什么? 全球速卖通平台是为中国供应商(生产厂、国际贸易公司)和国际中小采购商提供在线交易服务的互联网平台。 通过使用全球速卖通平台的服务，国际采购商能够直接采购到最低价格的中国制造的全线产品，并享受到安全、快捷(如同B2C交易方式)的贸易过程。 通过全球速卖通平台的服务，中国供应商能够直接把产品在平台上进行出售。 2）全球速卖通平台的目标客户都是谁? 全球速卖通平台上的“目标客户”主要是两类人，一类是买家，一类是卖家。这两类人群中，全球速卖通平台只向卖家收费。 3）全球速卖通平台的买家是谁? 买家主要是包含两类人群，线上的是在诸如EBAY、https://www.doczj.com/doc/b48245891.html,等平台上的零售商;线下的主要是一些实体店中的中小零售商。 4）全球速卖通平台的卖家是谁? 全球速卖通平台平台上的主要卖家为https://www.doczj.com/doc/b48245891.html,平台上现有的中国供应商会员。此类卖家主要由外贸生产型企业、外贸公司、外贸SOHO一族组成，这类人群同时也很有可能是EBay 、https://www.doczj.com/doc/b48245891.html,、https://www.doczj.com/doc/b48245891.html,以及淘宝等各类C2C平台上做生意的卖家。这几类卖家中，主要以中小型的外贸公司以及外贸SOHO一族为主，一些有实力的外贸生产型企业参与的比例较小。 5）全球速卖通平台如何拓展买家? 全球速卖通平台因目前只是https://www.doczj.com/doc/b48245891.html,的一个子频道，故其买家主要来源为https://www.doczj.com/doc/b48245891.html,。另外，还靠搜索引擎优化、付费搜索引擎推广、网站联盟、许可电子邮件营销等方式把海外买家吸引到全球速卖通平台平台上。 6）全球速卖通平台如何拓展卖家?
高考英语作文万能模板 一、图表作文框架 As is shown/indicated/illustrated by the figure/percentage in the table(graph/picture/pie/chart), 作文题目的议题has been on rise/ decrease (goesup/increases/drops/decreases), significantly/dramatically/steadily rising/decreasing from______ in _______ to ______ in _____. From the sharp/marked decline/ rise in the chart, it goes without saying that ________. There are at least two good reasons accounting for _____. On the one hand, ______. On the other hand,______ is due to the fact that ________.In addition, _______ is responsible for _______.Maybe there are some other reasons to show ________.But it is generally believed that the above mentioned reasons are commonly convincing. As far as I am concerned,I hold the point of view that _______. I am sure my opinion is both sound and well-grounded. 二、书信作文模板 Your address Month，Date，year Receiver's addressDear …， I am extremely pleased to hear from you. And I would like to write a letter to tell you that_____. …… I will greatly appreciate a response from you at your earliest convenience/I am looking f0rward to your replies at your earliest convenience. Best regards for your health and success. Sincerely yours， X X X 三、话题作文 Nowadays，there are more and more __ _ in __ _. It is estimated that ___. Why have there been so many ____? Maybe the reasons can be listed as follows. The first one is ______. Besides，_____. The third one is _____. To sum up，the main cause of it is due to _____. It is high time that something were done upon it. For one thing，_____. For another thing，_____. All these measures will certainly reduce the number of _____. 四、对比观点作文 (1) 要求论述两个对立的观点并给出自己的看法。 1. 有一些人认为。。。 2. 另一些人认为。。。
3000字英文参考文献及其翻译 【注意：选用的英文一定要与自己的论文题目相关。 如果文章太长，可以节选（用省略号省略一些段略）。如果字数不够，可以选2至3篇，但要逐一注明详细出处。英文集中在一起放前面，对应的中文翻译放后面。中文翻译也要将出处翻译，除非是网页。 对文献的翻译一定要认真！对英文文献及其翻译的排版也要和论文正文一样！ 特别注意：英文文献应该放在你的参考文献中。】 TOY RECALLS——IS CHINA THE PROBLEM Hari. Bapuji Paul W. Beamish China exports about 20 billion toys per year and they are the second most commonly imported item by U.S. and Canada. It is estimated that about 10,000 factories in China manufacture toys for export. Considering this mutual dependence, it is important that the problems resulting in recalls are addressed carefully. Although the largest portion of recalls by Mattel involved design flaws, the CEO of Mattel blamed the Chinese manufacturers by saying that the problem resulted ‘in this case （because） one of our manufacturers did not follow the rules’. Several analysts too blamed the Chinese manufacturers. By placing blame where it did not belong, there is a danger of losing the opportunity to learn from the errors that have occurred. The first step to learn from errors is to know why and where the error occurred. Further, the most critical step in preventing the recurrence of errors is to find out what and who can prevent it. ……
高中英语作文万能句子大全 【谓语结构】 1、行为动词（表示动作和状态的词）原形单三过去式 2、系动词+表语（形容词为主） feel/taste/smell/look/sound+形 be+形/名/介短/数 get/turn/become+形（名） keep+形 3、情态动词+行为动词原形 can/may/must/need(not)+v 4、助动词+行为动词 be+ving do not/does not/did not/+v have/has/had+过去分词 be+过去分词（被动语态） will/would/be going to+v原 【五种简单名结构】 1、主语+不及物动词 2、主语+及物动词+宾语 3、主语+系动词+表语 4、主语+及物动词+间接宾语（人）+直接宾语（物） 5、主语+及物动词+宾语+宾语的补足语 说明：及物和不及物动词就是句子的谓语，不外乎以上四种谓语结构 【主要连接词】 常见的有 when before after as soon as 表示“反意见”： But,however 然而，如：③Jim is intelligent but lazy. 表示“举例示范”： For example, in other words,换句话说 常用的名言和谚语 Better early than late. 宁早勿迟
It is never too late to learn. 学习永远不嫌晚。 Where there is a will, there is a way. 有志者事竟成。 Health is better than wealth. 健康胜于财富。 Parents are the first teachers of the children. 父母是孩子的第一任老师。 Time waits for no man. 时不待人。 Knowledge is power. 知识就是力量。 【开头句子】 As we know, we students are very tired because of study. Just as the saying goes: “Every coin has its two sides”,television has both advantages and disadvantages. 正像谚语所说：“任何硬币都有两面”，电视即有优点也有缺点。 The problem of ..is important/serious/..to us. Now let me talk something about it. 【结尾句子】 In a word,I think I will have a good time in … I believe everything will be better in the fulture. I am sure the world must be better if we all give our love to others./if we all make a contribution to it. Let us do it hard/try our best to do it. 【重要词组】 be good at be late for be worried about be interested in be busy dong sth be afraid of on one’s way to+地点 have a good time have a rest have sth done look after look over look like look the same look at look+形容词 get ready for Get on/off get up get down get to
高考英语写作万能句型模板 一.开头句型 1. As far as ...is concerned 就……来说 2. It goes without saying that... 不言而喻…… 3. It can be said with certainty that... 能够肯定地说…… 4. As the proverb says，正如谚语所说的…… 5. It has to be noticed that... 必须注意到的是…… 6. It's generally recognized that...普遍认为…… 7. What calls for special attention is that...需要特别注意的是…… 8. There's no denying the fact that...毫无疑问，无可否认…… 9. Nothing is more important than the fact that... 没有什么比这更重要…… 10. What’s far more important is that... 更重要的是…… 二.衔接句型 1. As is often the case...通常情况下…… 2. As stated in the previous paragraph 如前段所述…… 3. But the problem is not so simple. Therefore… 不过问题并非如此简单，所以…… 4. But it's a pity that... 但遗憾的是…… 5. In spite of the fact that...即使事实是……
XXX网商业模式分析 [引言] 众所周知，要问现在互联网什么模式最火？当属由美国groupon公司开启的“全民团购时代”，团购消费风靡一时，而XXX更是中国首屈一指的团购网站，作为中国专业团购网的鼻祖，XXX始终盘踞在团购的巅峰俯瞰群雄亦竞逐“千团大战”，XXX以其独特的商业模式实现“商家、消费者、XXX”三赢的互利互惠局面，各种商业模式要素均在各种程度上决定着XXX的安息兴衰成败，特别是客户关系管理，面对“以社会、消费者为中心”的现代营销模式，XXX一直都聚焦着“客户关系”。“商业模式越简单越好。XXX网虽然每天只为用户提供一款团购产品，但是我们却力求提供最超值的消费体验。”对比像淘宝这样提供很多产品的电子商务模式，XXX 表示自己更倾向于提供“简单的客户服务”。 [以下为XXX网商业模式的具体分析] XXX的顾客细分(Customer Segmentation) 任何一个企业不能单凭自己的人力、财力和物力来满足整个市场的所有需求，这不仅缘于企业自身条件的限制，而
且从经济效应方面来看也是不足取的。因为，企业应该分辨出它能有效为之服务的最具有吸引力的细分市场，集中企业资源，制定科学的竞争策略，以取得和增强竞争优势。 顾客天生就存在差异，大量营销策略在忠诚的世界里根本就不适用，因为并不是每一个顾客都适于成为某品牌的品牌忠诚者。如果企业要最大化地实现可持续发展和长期利润，就要明智地只关注正确的顾客群体，因为企业要获得每一位顾客，先前都要付出一定的投入，这种投入只有在你能赢得顾客的忠诚后才能得到补偿。因此，要通过价值营销以获得品牌忠诚重要的一步就是对客户进行细分，找寻到哪些顾客是能为企业带来赢利的，哪些顾客不能，并锁定那些高价值顾客。只有这样企业才能保证他在培育顾客忠诚的过程中所投入的资源得到回报，企业的长期利润和持续发展才能得到保证。 客户细分是指根据客户属性划分的客户集合。它既是客户关系管理（Customer Relationship Management，CRM）的重要理论组成部分，又是其重要管理工具。它是分门别类研究客户、进行有效客户评估、合理分配服务资源、成功实施客户策略的基本原则之一，为企业充分获取客户价值提供理论和方法指导。 XXX网创业团队深知顾客细分的必要性，不是一味的在
高考英语书信写作必背句型 一、邀请信 【篇首句】介绍自己，简要说明活动，并邀请对方。 1.I’m Li Hua from xxx School，the president of the Student Union. 我是来自xxx学校的王明，学生会主席。 2. An English speaking contest of our school will be held on August 6. 我们学校有一场英语演讲比赛将在8月6号举行。 3. There will be a party in my garden on Sunday. 周日，在我的花园里会举行一场聚会。 4. I’d like to invite you to judge it. 我想邀请你做它的裁判。 5.I’m now writing on behalf of the classmates to invite you to come and attend it, if you can spare time. 我代表同学写信邀请您来参加，如果您能抽出时间的话。 6.I sincerely invite you to watch the show because... 我诚挚的邀请您来看演出，因为.......。 7. I’m writing to invite you to... 我写信是邀请你...... 8. I wonder if you can come to... 我想知道你是否能来...... 9. We sincerely hope you can attend it. 我们真诚希望你能够参加。 10. It’s my pleasure/a great honour for me to invite you to... 我很荣幸的邀请你...... 11. It’s a pity that you have to go back to America soon. So a farewell party for you will be held in the Sun Club this Saturday evening. Could you come at 6:00 pm? 很遗憾你不久就要回美国了。所以，这周六，在阳光俱乐部我们会为你举行一个欢送会。下午六点你能来吗？ 【篇中句】介绍活动具体内容，并说明受邀人参加理由。 1. It will begin at 2:00 pm and last two hours, during which time 15 well-prepared contestants will deliver their speeches. 它将于下午两点钟开始，四点钟结束，在此期间将会有十五位准备充分的参赛者发表演讲。 2. We will start at 8:00 am and arrive there at 9:00. 我们将会在上午八点出发，九点到达那里。 3. During the afterno on, we’ll...together. 下午，我们会一起...... 4. Remember to take water and lunch with you. 记得带上水和午餐。 5. By the way, you may take Bus No. 322 in front of your apartment and it will take you directly to the club. 顺便说一下，你可以乘坐你家公寓前的322路公交车，它会直接把你带到俱乐部。 6. I know you are a native speaker of English and an English teacher, and I, on behalf of our school,
写作套路 但凡应试书信，逃不出三种段落： (一)开头段：四大内容 1、问候; 2、自我介绍; 3、写信背景;为什么会写这封信 4、写信目的;写这封信想达到什么目的(紧扣题意） (二)中间段：具体问题+具体分析（罗列题目要点）; (三)结尾段：客套话。 口诀： 开门见山说意图 咨询建议123 不同内容可分段 感谢客气不可少 期待回信成老套 【经典套话】 (一)开头段：灵活地去写四种内容： 1、问候; How are you doing? How is everything going? How is life treating you? How nice to hear from you again.
很高兴再次收到你的回信 Let me tell you something about the activity. 让我告诉你一些关于这次活动的细节 I’m glad to have received your letter of Apr. 9th.[/color] 很高兴收到你在4月9号的来信 I’m pleased to hear that you’re coming to China for a visit. 很高兴得知你将来拜访中国 I’m writing to thank you for your help during my stay in America. 我正写这封信感谢我在美国你对我的帮助 2、自我介绍; I am LiHua, a 17-year-old boy currently studying in XXX middle school. I am LiHua, who... 【李华同志的个人简历】 由于我们在考场上的身份几乎年年都是李华，因此我们在这里有必要了解一下李华同志的一些个人情况。当然，这位同志的个人情况是可以有我们自己人为设置的。为了给阅卷老师留下一个好印象，我们将李华同志的个人简历概括为：一个人见人爱的好孩子。 hardworking diligent help my parents to do housework take part in CCTV national English speech competition won the second prize in CCTV national English speech competition vice monitor
MCS-51系列单片机 中英文资料对照外文翻译文献综述 Structure and function of the MCS-51 series Structure and function of the MCS-51 series one-chip computer MCS-51 is a name of a piece of one-chip computer series which Intel Company produces. This company introduced 8 top-grade one-chip computers of MCS-51 series in 1980 after introducing 8 one-chip computers of MCS-48 series in 1976. It belong to a lot of kinds this line of one-chip computer the chips have, such as 8051, 8031, 8751, 80C51BH, 80C31BH,etc., their basic composition, basic performance and instruction system are all the same.8051 daily representatives-51 serial one-chip computers. A one-chip computer system is made up of several following parts: (1) One microprocessor of 8 (CPU). ( 2) At slice data memory RAM (128B/256B),it use not depositing not can reading /data that write, such as result not middle of operation, final result and data wanted to show, etc. (3) Procedure memory ROM/EPROM (4KB/8K B ), is used to preserve the
高考作文经典句型100句 这100句用在你的作文中会像炸弹一样，使你的作文爆发出想象不到的力量！ 1. It is important for everyone to learn English well in our rapidly developing world. 在这个迅速发展的世界里，对每个人来说，学好英语是非常重要的。 [额外成就感] 同样句型包括：It is important/（necessary, difficult, convenient, possible）for sb. to do sth. 例句：It is necessary to shake hands when you first meet someone. 与第一次见面的人握手是非常必要的。 2. The harder you work at it, the more progress you will make.你工作越努力，你取得的进步就越大。 [额外成就感] ①The+比较级…，the+比较级… ②比较级+and+比较级（The world is getting smaller and smaller.） 3. If everyone makes a contribution to protecting the environment, the world will become much more beautiful. 如果每个人都为保护环境做出贡献，世界会变得更加美好。 [额外成就感] 类似的句型还有：If necessary…，they can… 4. The best way to remember new words is to practice them everyday. 记忆新单词最好的方法是每天操练这些单词。 5. The atmosphere in my family is fantastic 我的家庭气氛温馨和睦。
一、开头段常用提出现象句型 1. Nowadays more and more … are commonly and widely used in everyday life. 现在越来越多的……被广泛用于日常生活。 2. In recent years…is gaining growing popularity with… 近年来……正日益普及… 3. Recent years have seen a boom in … 近年来，出现了繁荣的… 4. Nowadays, there are many… 现在，有很多的… 5. nowadays, … has become a very common matter in … 如今，……已成为一种很普遍的事情… 6. Nowadays there is a growing tendency in … 现在有越来越多的趋势… 7. Recently … has aroused wide concern./…has been brought into focus. 最近……引起了人们的广泛关注。/……已经成了焦点。 8. Most of us may have such experience that … 我们中的大多数人可能都有这样的经历… 二、开头段常用引出他人观点句型 1. In reaction to the phenomenon …some people say … 对这一现象的反应，有些人说……
2. When it comes to …, some people think… 当谈到……，有些人认为… 3. When asked about …, most people say … 当被问及……，大多数人说… 4. Now, it is widely believed that … 现在，人们普遍认为… 三、开头段常用引出两种不同观点句型 1. There has sprung up a heated debate as to whether …. Some maintain that…. However, others believe that … 出现了激烈的辩论是否的…一些支持…然而，其他人认为… 2. There is a public debate today over …. Some people believe…. Others claim that… 今天有一场公开了…一些人相信…其他人认为… 3. People’s opinions vary when they talk about …. Some maintain that…. Others believe that … 人们众说纷纭，当他们谈论的…一些支持…另一些人相信… 四、中间段常用引出作用、重要性、优缺点、影响句型 1. … plays an important role in … ……中起着重要的作用… 2. The advantages of … lies in many ways.
江汉大学毕业论文（设计）任务书物理和信息工程学院通信和电子信息系 电子信息工程专业 题目：智能家居门禁系统的研究及电子密码锁的设计 起止日期：2010年12月20日至2011年5月30日 学生姓名：xxxxxxx 学号：xxxxxxxxxxxxx 指导教师：漆为民 教研室主任：____________ 年月日审查 系主任：年月日批准 2010 年 12 月 20日至 2011年5月30日
学生进行毕业论文（设计）前，指导教师应填好此任务书，经教研室、系主任签字后，正式给学生下达任务。 江汉大学毕业论文（设计） 开题报告 论文题目智能家居门禁系统的研究及电子密码锁的设计
（英文）Access control system for smart home and the designof electronic locks 学院物理和信息工程学院 专业电子信息工程 姓名 xxxxxx 学号 xxxxxxxxxxxx 指导教师漆为民 2011年1月16日
注：本页为毕业论文(设计)开题报告的封面,请将开题报告正文装订于后。 开题报告 一．课题来源和背景 20世纪80年代初，随着大量采用电子技术的家用电器面市，住宅电子化出现。80年代中期，将家用电器、通信设备和安保防灾设备各自独立的功能综合为一体后，形成了住宅自动化概念。80年代末，由于通信和信息技术的发展，出现了对住宅中各种通信、家电、安保设备通过总线技术进行监视、控制和管理的商用系统，这在美国称为Smart Home，也就是现在智能家居的原型。 Xxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxxxxx 我的课题是关于智能家居之门禁系统篇，主题是基于AT89C51单片机电子密码锁的设计和研究，运用了Proteus这一仿真平台。在对电子密码锁的设计的同时，也对各种门禁系统的核心技术进行了学习和比较。 二．研究目的以及意义 xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx。 意义：通过该设计的经历，了解当今世上的有关智能家居门禁系统的一些新的发展，新的技术以及产品的使用。并通过对电子密码锁的设计研究，来学习通过一个基于AT89C51单片机的电子密码锁的仿真设计过程展示Proteus软件在数字电路及单片机开发中的巨大作用以及相比于传统设计方法的巨大优势．显示了Proteus能快速的进行单片机仿真．加快系统开发的过程而且降低的我们的开发成本。在设计过程中所使用到的Proteus的功能只是Proteus强大功能中的一小部分，Proteus还具有环境模拟、图表分析、噪声分析等高级使用．甚至能使用于自动控制领域对复杂的自控算法进行仿真．通过深入学习．我们可以进一步的了解Proteus在各个领域的强大使用。在数字电路和单片机的课程教学中Proteus也不失