安徽工程科技学院机电学院毕业设计(论文)
结论与展望
经过一短时间的认真做毕业设计,使我对单片机的设计课题有了很深刻的理解,对硬件了解多了很多,对软件的流程图设计也有了一定的进步,而且根据事先规划的方案逐渐实现了。硬件实现方法是通过查询各芯片的功能对比从而整体把握,选择了主芯片AT89S52,这个芯片的选择对设计的具体要求带来了很大的帮助,提高效益,减少差错,节省了部分的器件,节约了设计时间。键盘电路按键的个数是4×4个。这种行列式键盘结构能够有效地提高单片机系统中I/O口的利用率。相比较独立式键盘占用大量的I/O系统资源而言,一个端口(如P1口)就能组成16个按钮,比之直接将端口线用于键盘多出了一倍,采用矩阵法来做键盘是很合理的。液晶显示器选择型号1602,考虑到乘法口诀的数字有限,又有每行16个字符就足够达到利用率。总的体会就是第一次把理论知识用到合理的设计方案中来,所以带给我的启发就是科学的发展要依靠学到的理论知识加以应用在现实里实现,把握物质的特性至关重要。
现在智能化的发展和应用空间是日益先进。从我国的古代算盘到现在的电子计算机无疑是一人类历史的进步,开始计算机的出现由于不知道集成电路的设计方案,导致一个完整的计算机就要占用几个房子大的空间,而现在的一个芯片CPU才只有一个水瓶盖子大小,一个先进的掌上电脑就能使用好多功能。设计一个乘法口诀测试仪不到200克的重量,总大小也只有巴掌大小的空间,方便孩子随身携带、学习。以前的儿童教学方法就是单一的课堂学习,老师黑板出题,学生作答,时间和效益都相当低,走出这一固定的模式教学,启蒙儿童学习可以在任何地方,任何时间,有了乘法口诀测试仪的帮助,能随机给儿童出题,给他们正确的答案和指导。这样一来课堂的模式教学可以走向多元化,启发儿童对科学的热爱。
由于设计的是单一的乘法口诀,只能对其乘法出题,其它算法不再计算范围之内,可能会给教学带来一些知识上的局限性,所以第一个拟改方案就是把其它的除法、加法、减法等算法混合起来计算,出题的内容将大大丰富。又由于每次出题没有时间规定限制,测试者可以无限的延长计算时间,对提高儿童的大脑思维活跃性不是很好,如果每次出题能规定一短时间的考虑,规定题数,时间到了还没有结果就视为答错,并自动给出下一个题目,在规定的时间内出一定数目的题可以考察测试者对运算掌握的熟练程度,并给出总结的分数,答对和答错比例。由于AT89S52单片机需要电源启动,所以设计一个乘法口诀必须要通电,目前给的电子辞典大多数是要上小电池,如果没有了电源启动将无法使用,为了解决这个矛盾,我们可以设计一个依靠光能转化为电能的装置,真正达到在任何时间、任何地点学习的目的。
在我们国家还有很多儿童面临的是饥饿和贫困,他们所在的地区有的地方连电力也是经常不能够满足,而市场上的电子辞典对他们来说是奢侈品,如果能把上述的难题解决完善,很多的学龄儿童就可以得到一个比较好的学习资料,也不需要电池的购买,通过很小的设计成本就可以为他们的启蒙教学带来莫大的帮助,从某些程度上说就是减少了我们国家的教育资源难得均匀分配的困难。对下一代儿童的教育工作是关系到我们国家发展的大局。能为社会做出自己应有的贡献是我们当代大学生的神圣职责和使命,设计一个简单的乘法口诀具有不简单的意义。
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郭焰昌:基于液晶显示的乘法口诀测试仪的设计
致 谢
本论文是在导师许钢老师的密切关心和悉心指导下完成的。许钢老师在课题研究和论文写作的过程中给予了我极大的指导和鼓励,谨向恩师致以最真挚的感谢和最崇高的敬意。
许钢老师以认真负责的工作态度、一丝不苟的治学态度深深影响着我,从大学二年级我就曾经深受许老师影响。许钢老师以渊博的学识、富有创造力的思维和丰富的教学实践经验给予我深刻的启迪,使我在实践中得到了最大的锻炼,使我终生受益。
导师严谨的治学风范,诚实守信的为人作风,勤勉的工作精神,以及高度的负责精神,时刻鼓励我更加努力的学习和勤奋的工作,在人生的旅途上不断的锻炼自己。
同时我要感谢我的以前教学老师、同学们。他们在平时的学习给了我知识的源泉,当我遇到不懂的地方的时候他们都是全心辅导,在此表示我最诚挚的谢意。
没有老师和同学的帮助,我今天所取得到的成就也无从说来。我再次向你们表达我最崇高敬意!
作者:
2008年6月10日
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安徽工程科技学院机电学院毕业设计(论文)
参考文献
[1] 黄惠媛,李润国.单片机——原理与接口技术[M].北京:海军出版社,2006 [2] 王彦朋.大学生电子设计与应用[M].中国电力出版社,2007
[3] 宋建国,张进谟.EPSON单片机原理与应用[M].北京航空航天大学出版社,1998 [4] 宋浩,田丰.单片机原理与应用[M].清华大学出版社,北京交通大学出版社,2005 [5] 胡汉才.单片机原理及其接口技术[M].清华大学出版社,2004
[6] 韩志军,沈晋源,王振波.单片机入门向导与设计实例[J].计算机学,2005,10 (04):2-6
[7] 姚远.液晶显示技术的新进展[J].新电脑,2007,11 (02):12-15
[8] 刘树中,孙书鹰.王春平.单片机和液晶显示驱动器串行接口的实现[J].微计算机信息.2007,13 (02):10-20
[9] 甘学温,莫邦燹.低功耗CMOS逻辑电路设计综述[J]微电子学.2000,13 (04):1 [10] 许宜申,朱欣华,许向华.点阵式LCD显示模块在数控机床中的应用[J].工业控制计算机,2004,12 (03):17-18 [11] 昭贝贝,龚光华.单片机认识与实践基本注意项目[J].单片机认识知识,2003,11(06):7-11
[12] 科林.新型显示器—电路分析与检修[J].新型显示器.2007,16(03): 10-15
[13] 史延龄,李汉军.点阵液晶显示模块在某一检测系统中应用[M].北京航天航空大学出版社,1998
[14] 严天峰.单片机应用系统设计与仿真调试[M].北京航天航空大学出版社,2005 [15] Hmjushon. W. Lidamalu. ---Cx51 Compiler User?s Guide: Optimizing C Compiler and Library Reference for Classic and Extended C51 Microcontrollers[M].Software ,inc,2002 [16] E. A. Nichols. K. R. Musson. ---The Principle and Application of MC51 Guide[J]. software,Inc.2002,10 (02):1-8
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郭焰昌:基于液晶显示的乘法口诀测试仪的设计
附录A 电路原理图
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安徽工程科技学院机电学院毕业设计(论文)
附录B 一篇引用的外文文献及其译文
外文文献:
The Principle and Application of MC51 Guide
The single slice machine means a complete calculator system which integrates on a piece of chip. Though he greatly parts of functions integrate on a cake of small chip, but it has greatly parts of parts that a complete calculator needs: CPU, memory, inner part and the exterior total line system, greatly part of will also have an outside to save currently. Integrate in the meantime such as the communication of connect, in fixed time machine, actually and always clock etc. peripherals. But now the most strong single slice machine system even can voice, picture, network, the complicated importation output the system integrate on a piece of chip.
The single slice machine is also called tiny controller, is because it was used in the industry to control realm at the earliest stage. Single slice machine from inside chip have CPU appropriation processor to develop only since then. At the earliest stage of design the principle is to pass to integrate a great deal of peripherals and CPU in a chip, making calculator system smaller, integrating more easily into complicated of but to mention to request a strict control equipments in the middle. The INTEL Z80 is the processor which designed according to this kind of thought at the earliest stage, from now on, single slice the development of the machine and appropriation processor went by different roads then.
The single slice of the earlier period all of machines are 8 or 4.Among them, the INTEL is most successful of 8031, because of in brief dependable but the function was quite good to acquire very big good opinion. Henceforth at 8031 up developed MCS51 series a single slice machine system. According to the single slice of this system machine system is still in the extensive usage till now. Because of the industry controls the exaltation of with realm request, starting appearing 16 single slice machine, and because the sex price wanted to don't get a very extensive application than the disregard.
Develop greatly along with the consumption electronics product after 90's, the single slice machine technique got a huge exaltation. Along with the extensive application of INTEL is 960 series especially later ARM series, the 32 single slice machine replaces 16 single slice the high level position of the machine quickly, and gets into an essential market. And traditional of 8 single slice the function of the machine also got to fly to raise soon, handling an ability to compare with to raise few a hundred folds in 80's.Currently, 32 single slice of the high level with main machine already over 300 MHz, the function keeps appropriation processor of making track for the mid 90's, and the common model number factory price drop into to USD 1, tallest carry of model number also only USD 10.
The contemporary and single slice machine system has already no longer developed and used just under the naked machine environment, the in great quantities appropriative built-in operate system is applied extensively in the whole series of the single slice is on board But Be is the high level of handheld PC and cellular phone core processing single slice the machine even can use appropriative Windows and the Linux operate system directly. Single slice the machine ratio appropriation processor is the most suitable to match to apply in the built-in system, so it got the most applications. In fact the single slice machine is an amount the most calculators are in the world. The modern mankind are living medium use of assemble in almost
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