【正文】 s Day. More and more young Chinese people begin to celebrate this day in a very similar way as that in western countries. Fewer people than ever will gaze at the heavens on Saturday to pick out the two stars shining bright on either side of the Milky Way, that is, if people even know on which day Qixi falls. There are ready reminders dotted about, in the form of big ads saying Sales on Ch inese Valentine39。 Festival. In this day, girls will throw a sewing needle into a bowl full of water on the night of Qixi as a test of embroidery skills. If the needle floats on top of the water instead of sinking, it proves the girl is a skilled embroiders. Single women also pray for finding a good husband in the future. And the newly married women pray to bee pregnant quickly. Tradition transformed The love story of Niulang and Zhinu, and the Qixi Festival have been handed down for generations. Yet these ancient traditions and customs are slowly dying out. Many modern Chinese, particularly youngsters, seem to know more about St Valentine39。s time for the wild fruits to ripe. The picturesque Arxan in Autumn is indeed a fairyland only exists in a dream that satisfies all your fantasies. If it rains heavily on Saturday night, some elderly Chinese will say it is because Zhinu, or the Weaving Maid, is crying on the day she met her husband Niulang, or the Cowherd, on the Milky Way. Most Chinese remember being told this romantic tragedy when they were children on Qixi, or the Seventh Night Festival, which falls on the seventh day of the sevent h lunar month, which is usually in early August. This year it falls on Saturday, August 2. Folklore Story As the story goes, once there was a cowherd, Niulang, who lived with his elder brother and sisterinlaw. But she disliked and abused him, and the boy was forced to leave home with only an old cow for pany. The cow, however, was a former god who had violated imperial rules and was sent to earth in bovine form. One day the cow led Niulang to a lake where fairies took a bath on earth. Among them was Zhinu, the most beautiful fairy and a skilled seamstress. The two fell in love at first sight and were soon married. They had a son and daughter and their happy life was held up as an example for hundreds of years in China. Yet in the eyes of the Jade Emperor, the Supreme Deity in Taoism, marriage between a mortal and fairy was strictly forbidden. He ordered the heaven troop to catch Zhinu back. Niulang grew desperate when he discovered Zhinu had been taken back to heaven. Driven by Niulang39。 ll wait in the line for one hour to get a ticket, and another two hours at the site, to only see a tiny bit of the place due to the crowds. Last year, 428 million tourists traveled in China over the weeklong holiday in October. Traveling during this period is a matter that needs thorough preparation. If you are short on time to plan the uping Golden Week it may not be a bad idea to avoid some of the most crowded places for now. There is always a place so fascinating that everyone yearns for. Arxan is a place like this. The beauty of Arxan is everlasting regardless of the changing of four seasons. Bestowed by nature, its spectacular seasonal landscape and mountains are just beyond word. Arxan is a crucial destination for the remended travelling route, China Inner Mongolia Arxan — Hailar — Manzhouli. It is also the joint of the four prairies across the SinoMongolian border, where people gravitate towards the exotic atmosphere mixed with Chinese, Russian, and Mongolia elements. As a historic site for the Yitian Battle, Arxan still embodies the spirit of Genghis Khan. Walking into Arxan, you will be amazed by a kaleidoscope of geous colors all the year round the Spring azaleas blooming red in the snow, the Summer sea wavering blue in the breeze, the Autumn leaves painted in yellow covering volcanic traces, and the Winter woods shining white on the vast alpine snowscape. Hinggan League Arxan city is situated in the far eastern area of Inner Mongolia Autonomous Region. Its full name Haren Arxan means hot holy water in the Mongolian language. Arxan is a tourism city in the northern frontier with a blend of large forest, grand prairies, vast snowfield, heaven lake cluster, thermium, as well as volcanic cluster. It is a rare and unique ecotourism base filled with healthy sunshine, clean air and unspoiled green. Nestled close to the country39。在此我向他們表示最誠摯的感謝。我在做論文的過程中得到孫蓓老師認(rèn)真不倦的指導(dǎo)與教誨。 在整個(gè)畢業(yè)設(shè)計(jì)中，也用到了以前所學(xué)的知識。在本次設(shè)計(jì)中我得到了老師和同學(xué)的許多幫助， 使我在完成任務(wù)的過程中不斷進(jìn)步，不斷成長。 永城職業(yè)學(xué)院畢業(yè)論文 23 致 謝 經(jīng)過兩個(gè)多月的努力，終于圓滿的完成了本次設(shè)計(jì)任務(wù)。在老師的輔助和啟發(fā)下，獨(dú)立的完成了整個(gè)設(shè)計(jì)過程。先排除比較明顯 的硬件故障然后和軟件一起聯(lián)合調(diào)試。以至于在以后的畢業(yè)設(shè)計(jì)中能夠很好的利用自己所學(xué)的知識。用單片機(jī)來做設(shè)計(jì)，首先要知道單片機(jī)的一些基本知識，比如編程序首先要知道單片機(jī)中有哪里指令，各有什么用處，這些必須很清楚之后，才能熟練的編寫程序。我是電 子專業(yè)的學(xué)生，設(shè)計(jì)是我們將來必需的技能，這次實(shí)習(xí)恰恰給我們提供了一個(gè)應(yīng)用自己所學(xué)知識的機(jī)會，從到圖 書館查找資料到對電路的設(shè)計(jì)對電路的調(diào)試再到最后電路的成型，都對我所學(xué)的知識進(jìn)行了檢驗(yàn)。好多東西看起來十分簡單，一看電路圖都懂，但沒有親自去做它，你就不會懂理論與實(shí)踐是有很大區(qū)別的，看一個(gè)東西簡單，但它在實(shí)際操作中就是有許多需要注意的地方，比如說焊接，看上去蠻簡單，想做好其實(shí)是非常難的。在大一和大二我們學(xué)的都是一些理論知識，就是有幾個(gè)實(shí)習(xí)我們也大都注重觀察的方面，比較注重理論性，而較少注重我們的動腦，動手鍛煉。 本次畢業(yè)設(shè)計(jì)對我們很重要，是我們畢業(yè)之前的一個(gè)重要環(huán)節(jié)。 永城職業(yè)學(xué)院畢業(yè)論文 22 第五章 結(jié)論 即將踏出校門開始自己的新天地，有許多的感慨，這是學(xué)習(xí)所學(xué)知識的一次大的匯編，這對我是個(gè)考驗(yàn)。 總而言之 ,對于脈沖觸發(fā)類的信號我們要用軟件來配合 ,并要把程序編為死循環(huán) ,再利用示波器觀察 。例如對復(fù)位信號觀測就可以直接利用示波器 , 當(dāng)按下復(fù)位鍵時(shí) ,可以看到 8051 的復(fù)位引腳將變?yōu)楦唠娖?。循環(huán)執(zhí)行程序后 ,就可以利用示波器觀察芯片的片選信號引出腳（用示波器掃描時(shí)間為 1μ s／每格檔） ,這時(shí)應(yīng)看到周期為數(shù)微秒的負(fù)脈沖波形 ,若看不到則說明譯碼信號有錯(cuò)誤。將譯碼地址 外 RAM 中的內(nèi)容送入 ACCNOP。 MAIN ： MOV DPTR,＃ DPTR 。應(yīng)該利用軟件編程的方法來實(shí)現(xiàn)。 51 系列單片機(jī)的信號線大體分為讀、寫信號線、片選信號線、時(shí)鐘信號線、外部程序存貯器讀選通信號（ PSEN）、地址鎖永城職業(yè)學(xué)院畢業(yè)論文 21 存信號（ ALE ）、復(fù)位信號等幾大類 。這些工具是單片機(jī)開發(fā)的最基本工具。 若有高壓 ,聯(lián)機(jī)仿真器調(diào)試時(shí)