关于单片机的英文小论文题目

盼望着、盼望着，炎热的酷暑终于过去了，秋天的脚步近了。 一切都是秋高气爽的样子，天高了，云淡了。果子熟起来了，蛐蛐儿的叫声响起来了，天气凉爽起来了。 小草并没有完全从大地中消失，仍绿绿的。园子里，田野里。瞧去，一片一片 满是的。孩子们跑着，跳着，翻几个跟斗捡几个落下的果子互相投掷着，比赛着谁投得更远、更准。风凉丝丝的，草绿绿的。 桂树、枫树、常青树，带着苍郁和深沉的格调和各具特色的气质，展示着风采，金子般的黄，玛瑙般的红，翡翠般的绿，宛如画家精心绘制的画卷。鸟儿为迁移忙碌着，蚂蚁正在收集冬天的口粮。雏菊、一串红、矮牵牛，一眼望去遍是的：橘黄的，紫红的，争奇斗艳，铺在花坛里，像地毯，还迎着秋风微笑呢！ “落红不是无情物，化作春泥更护花！”不错的，它将变作春泥滋养着大地，毫不眷恋枝头的繁华。秋雨落在红叶和黄叶以及掺着绿与黄的彩叶上。豪华的枫叶，精致的常青叶，普通的梧桐叶……它们在秋雨的洗礼下变得更加艳丽。 树上的果子渐渐成熟了，田里果农也更忙了。城里乡下，工人学生，儿童老人，一个个都出来欣赏美景了，放松放松心情，观赏观赏秋色，采集采集标本，各做各的一份事去了。“一份耕耘，一份收获”，辛勤努力，换来了收获，充满了喜悦。 秋天像色彩之神，使植物的色彩渐渐变浓。 秋天像丰收之神，为人们带来了累累的硕果。 秋天像欢乐之神，为人们带来了丰收的喜悦。春的脚步（仿写朱自清的《春》） 严冬笼罩的世界里，我们盼望着春的到来。 春来了。不经意间发现，小路旁桑树的芽孢挺起了小肚子，久违的燕子也开始了飞翔，山上梯田里的麦子绿得更深了。一切都象睡醒了似的，欣欣然张开了眼。象鼻山朗润起来了，郪江、龙溪水涨起来了，天空的脸也红起来了。 晚上，我似乎听见了谁的脚步，匆匆的从窗前走过，带着希望，带着坚定，带着一种料峭的寒意。 白天，寻春。小草悄悄从土里探出头来，伸出身子，朝四处望了一望。小草很害羞，低下头，晶莹的露水闪着光，是他调皮的眼睛。冬天还没有完全过去，风中的小草摇动着身子，瑟瑟的颤动着；几天过后，嫩嫩的、嫩黄、浅绿、绿绿的、像玉石爬满了沟渠、路旁、溪水边、房前屋后。于是春大胆地向我们笑了。绿色挂上枝头，绿色撒上我们走过的脚印；绿色的瀑布好像在流，好像在笑，从山上拖下来，披下来。再过十几天，小草就铺天盖地的向我们走来：漫山遍野，绿色在流。从高高的望川山上拖垂下来的绿色，静静的晒着阳光。郪江两岸，一大片一大片的绿，是吐着草香的地毯。学校后山一排排树木是绿色的长剑，指向天空。真可谓：春风又绿妻江岸。风轻悄悄的，草软绵绵的。 我们家后面的桃树，粉红色的花瓣不停地绽放，一大片一大片的。花朵们你挤着我，我挤着你，吵吵闹闹的象赶场似的。春天用粉红的桃花滋润天空，点点滴滴贴满天空。谁家院子里杏花、梨花也开满了，桃花似火，杏花似霞，梨花似雪，让人目不暇接，流连忘返。天上的云是淡淡的，花的香味是清清的，引来蜜蜂和蝴蝶，在花丛中追逐、翩翩起舞。微风吹来，粉红色的桃花飘落，纷纷扬扬，四处飞散。蝴蝶和花儿，谁也分不清是谁：飞动的蝴蝶是飘落的桃花、梨花，飘落的桃花、梨花是翻飞的蝴蝶儿。野花遍地，星星点点，像散落在草丛中的桃花、杏花、梨花。 春风惹人醉。智南和尚说：吹面不寒杨柳风。我说：风吹花落春欲醉。微风吹来，小树摇着头，小草弯了腰，溪水不停的笑。风送来了泥土的气息，草的美味，花的清香。柔柔的阳光和风用手抚摸着你，抱着你，亲着你。你于是高兴了，叫来鸟儿为你歌唱。翠鸟音脆，在清风、绿树、流水间荡漾。有燕子穿过林子，在天空盘旋。夕阳西下，青山之上，有牧童短笛横吹。于是炊烟袅袅，夜色降临，休闲的人们放出轻快的音乐，和着花香、在微微湿润的空气里酝酿。 春雨在你不经意间飞洒。那细如迷雾的雨，悄悄的浮在天地间，在细叶上象涂了一层牛奶，象蒙了一层面纱。经雨浸润的叶片，绿得逼人的眼；微风中，花叶忽隐忽现；缥缈中，人似乎在天庭闲庭信步。尔后，雨就大了起来，象牛毛，密密的斜织着；雨像绣花针，远山和郪江是天女在用她那秀美的手绣制精美的风景画。仰望天空，看不见雨的源头。只有白亮的雨滴撒落，在叶面汇聚成小水滴。小水滴静静地从叶子上滑落，叶子就微微颤动。江面雨脚，象是浅浅的笑声，数也数不清。这时候，夜色低垂，远山上贴上一点两点灯光，象一朵两朵金黄的菊花；如果坐车穿过妻江大桥，那菊花就成了飞舞的金色蝴蝶。站在富乐寺望江亭，象山的大桥，龙溪的水，妻江两岸的绿野，沉浸在快乐安详中。衣单卓约的少女，象移动的花朵，象一行行诗句；撑着伞慢慢走路的行人，晚归的披蓑戴笠的农民，和归巢欢飞的小鸟，构成春天最美的节奏。细细疏疏的雨，细细疏疏的房屋，悠悠的江水，连绵起伏的群山，在雨里静默着。 春来了。白天的山头，就会升上几片风筝，象一只只大的蝴蝶；又像一只只鱼在白云里游，又像一只只叶子停在没有枝干的树上。平地里，草坪上，老老少少，一会儿就会站满了人。少的追逐，老的活动筋骨，晒着阳光。学生春游，生炊烟，著饭菜，笑声弥漫了山谷。 春来了，她的脚步是那样轻那样柔。象刚落地的娃娃，像花枝招展小姑娘，像健壮的青年，从草地上走过，从水面滑过，在白云上住过，在花朵上歇过，和小鸟儿攀谈过。晚上，我和春在梦中追逐，因为她明天还要匆匆赶路。

This system design take at89S51 chip as core controlling element, auxiliary by necessity peripheral circuit, designed one to have retakes courses with replays the function to retake courses machine, it by 5V direct-current power supply power supply. This system adds on one in the ordinary playback's foundation to retake courses the key to carry on the control. The control function including presses down retakes courses the key control circuit to store in the monolithic integrated circuit through a/D transformation chip gathering voice signal, presses retakes courses the key to carry on retakes courses the playback, presses again puts the key to start the normal playback. A \ the D sampling circuit uses ADC0809 to realize, D \ a switching circuit uses DAC0832 to realize, and the postpositioned power amplifier actuates the speaker work. The present paper mainly introduced retakes courses machine the software and hardware part's design, as well as the question which and the solution in the design, the debugging process meets.本系统设计以AT89S51芯片为核心控制元件，辅以必要的外围电路，设计了一个具备复读与重放功能的复读机，它由5V直流电源供电。本系统在普通放音器的基础上加上一个复读键来进行控制。控制功能包括按下复读键控制电路通过A/D转换芯片采集语音信号存入单片机中，按复读键进行复读放音，再按放音键开始正常放音。A\D采样电路采用ADC0809来实现，D\A转换电路采用DAC0832来实现，并后置功率放大器来驱动扬声器工作。本论文主要介绍了复读机的软、硬件部分的设计，以及在设计、调试过程中遇到的问题及解决方案

In recent years, with the rapid development of science and technology, the application of single chip is accepted broadly in real-time detection and automatic control of microcomputer. Although it’s often act as the core component of single chip system, it is not enough only with the knowledge of single chip. Engineers also need to think about the structure of the hardware to perfect the most higher education institutions have built single chip laboratory, equipped with experiment box and other hardware simulation equipment. But the circuitry of the experiment box is fixed and the experiment steps are hard to be changed. It is not fit the trend of rapid development speed of single chip technology. It is also unsuited to develop students’ abilities and creativities. With the introduction of the Proteus software simulation technology, it can be solved at a certain extent. We could design more experiment steps and help students completing their self-study with the simulation experimental platform. It is a positive technology for system construction. Based on the information above, the author design a temperature alarm system with functions of automatic temperature monitoring and artificially infrared temperature adjustment. This system is created based on the single-chip microcomputer simulation environment, using the PIC single chip of MICOCHIP ltd as the main control chip, combined with peripheral infrared sensor, LCD display, temperature sensing, dc motors, heating electric stove wire and alarm equipment. The control system of main chip and main program was written in C design has the advantages of reducing cost and increase practicability. It is could be adopted by most higher education institutions.