【正文】 sky was blue, and we couldn39。s Liaoning province, decades ago. The solider gave the old man a handmade saddle when they bid farewell. The story inspired Nasun to write Carved Saddle, a song that later became one of his most popular numbers. Now, every year, Nasun recruits young singers and dancers for the troupe. The troupe has also designed a new repertoire, which is mostly based on the daily lives of Mongolian people, especially the lives of nomadic families, and has bined contemporary musical elements with folk songs of the region. Haimu, a 25yearold khoomei (a local variant of overtone singing) singer, joined the troupe three years ago. Along with a sixmember band, he performs fast songs and soft ones that he writes－ all while playing the horsehead fiddle.Although I learned the piano since childhood and grew up listening to various kinds of music, to me, the folk music of Inner Mongolia is the root, he says. Performing in remote villages is pleasant. I feel at home on the boundless grasslands, and the warm people there make me feel fulfilled. The first round of spring auction season in Beijing ended last week, but it failed to create much spring in the art market. Although two pieces of Chinese painting fetched more than 100 million yuan, the decline in trading volume and sa le rate showed a downturn this year. In the ―Grand View: Chinese Painting Highlight‖ session at China Guardian 2022 spring auctions, Pan Tianshou’s representative work Eagle, Rock and Flora hit a record auction price of 279 million yuan, while Li Keran’s masterwork Jinggang Mountain fetched million yuan, an unexpected high in recent years. However, the trading volume fells to billion yuan from billion yuan in the same period the year before. The Huangchen 2022 Spring Auctions, which recorded million yuan in total sales, experienced the same. The section number went down to 5 from 12 pared to last year. According to expert Shao Jianwu, the art market did not attract much excitement this year due to the booming stock market and the persistent problems of fery and fake deals. The two pieces of Chinese painting notched up high price this spring due to their own value not due to a revival in the market. The successful transaction of two works with a hammer price of more than 100 million yuan once again confirms that valuable and rare works of high quality always earn the longlasting high price. Chinese painting and calligraphy is still the pillar of the market. However, the overall sales rate has dropped slightly, which reflects the demand for the ordinary auction goods has weakened,‖ said the president of China Guardian’s Hu Yanyan. Besides, the entry of new buyers also makes certain changes to the direction of purchasing. In a word, the overall market trend is very unpredictable. Although China Guardian 2022 Spring Auctions has achieved remarkable results, it does not mean that the market has walked out of the predicament. We still have to wait for the big economic boom to invigorate the art market.‖ Even so, the hot pursuit of some special items appeared this spring. A special session of China Guardian Spring Auctions titled ―Fine Gilt—Bronze Buddhist Images‖ achieved a great deal with total sales volume of million yuan and 92 percent sale rate. The 5th Shamar Rinpoche Statue from 1617th century of Tibet was sold for million yuan. The Beijing Chengxuan Auctions featured almost 2,800 items of coins and stamps in three sessions with good sale rate. The Huachen Auctions also set a special session of photographs under the condition of largescale decline of auction sessions. There was a palpable dull thud of disappointment that acpanied the return of the imperial entourage of Zhen Huan to her homeland. It followed a couple years of hushed excitement as Chinese fans were fed tidbits about their proud concubine who was supposed to conquer the high ground of the North American market. Zhen Huan is, of course, the title character of The Legend of Zhen Huan, a 2022 television series that swept China off its feet and later took other Asian countries by storm. Two years ago, it was reported that HBO, a premium cable service headquartered in the United States, was going to air it in North America after some modification. Now, a condensed version that provides English subtitles but no dubbing has finally been made available on Netflix for online streaming. This version, highly anticipated as a milestone in China39。s Poly Theater. Their show, titled Ulan Muqir on the Grassland, depicted the history and development of the art troupe. Being from the region allowed me to embrace the culture of Inner Mongolia and being a member of the troupe showed me where I belonged, Nasun, the art troupe39。s Shaanxi province pass through a stop on the ancient Silk Road, Gansu39。 畫插圖過程中，一開始想利用 word 本身制作，可 word 畫出的圖果不僅不好，而且如果文章一有點小改動，插圖無法連接，分散開來，這樣修改起來又不方便。在單片機的選擇上是選擇內(nèi)部具有 4KB 字節(jié)的閃爍存儲器的 AT89C51 還是還選擇具有 8K 的 AT89C2051 或是STC89C51 曾經(jīng)也讓我困惑不已（其實任選一款都可以實現(xiàn)，但是曾經(jīng)考慮的是資源浪費和元件的價格問題）。退出中斷 LOP2: MOV A,STOREH 。重裝初值 MOV TL0,18H CPL FLAG 。送入顯示緩沖單元 MOV A,R2 。打開外部中斷 0 SETB IT0 。設(shè)堆棧棧底 MOV TMOD,01H 。 看門狗復(fù)位的原理 當(dāng)干擾信號進入系統(tǒng)時，常導(dǎo)致程序的跑飛，而程序跑飛的根本原因是由于程序計數(shù)器 PC 錯位引起的，在程序 存儲器中，指令碼與存放指令的地址是一一對應(yīng)的，有的指令碼是單字節(jié)，有的二字節(jié)，單片機最多三字節(jié)， PC 的內(nèi)容正是要執(zhí)行的指令碼的地址，若修改了 PC 內(nèi)容，打破單片機正常的取指操作，導(dǎo)致了程序的非正常運行，甚至出現(xiàn)至命故障（便修改重要的數(shù)據(jù)等），因此為克 貴州大學(xué)本科課程設(shè)計 第 頁 服這一問題，可用看門狗監(jiān)視程序運行，若程序跑飛，則看門狗產(chǎn)生復(fù)位信號，使單片機重新返回程序正常運行。 PFI（ 4 腳）：電源故障輸入端。 圖十五、上電復(fù)位電路 手動復(fù)位：所謂手動復(fù)位就是通過一按鍵開關(guān)，使單片機進入復(fù)位狀態(tài)。 P3 作輸入口使用時，因為有內(nèi)部的上拉電阻，那些被外部信號拉低的引腳會輸出一個電流：（ ILI ）。 P1 作輸入口使用時， 因為有內(nèi)部的上拉電阻，那些被外部信號拉低的引腳會輸出一個電流（ ILI ）?？臻e方式停止CPU 的工作，但是允許 RAM、定時 /計數(shù)器、串行通信口及中斷系統(tǒng)繼續(xù)工作。 綜上所述，在本設(shè)計在最合理的是采用外部中斷方式計數(shù)。 貴州大學(xué)本科課程設(shè)計 第 頁 、數(shù)碼管驅(qū)動部分 圖十、 74LS245 引腳圖 引腳功能： A： A 總線端