【正文】 t. Baumgartner still will free fall at a speed that would cause you and me to pass out, and no parachute is guaranteed to work higher than 25,000 feet (7,620 meters). cause there 。ll be traveling fast, so despite the distance, it will not be like diving into the deep end of a pool. It will be like he is diving into the shallow end. Skydiver preps for the big jump When he jumps, he is expected to reach the speed of sound 690 mph (1,110 kph) in less than 40 seconds. Like hitting the top of the water, he will begin to slow as he approaches the more dense air closer to Earth. But this will not be enough to stop him pletely. If he goes too fast or spins out of control, he has a stabilization parachute that can be deployed to slow him down. His team hopes it39。突然想到那件藍格子襯衫；那些被折成各 種各樣形狀的信紙；那段從街角深巷伊始的友誼；還有那場還沒有開始就宣告了終結(jié)的邂逅計劃 …… 那些年那些天的非做不可，終于和青春一樣，都將在我們的人生中謝幕。 Have declared the end of the encounter that haven39。 Those were broken into various shapes of stationery。那些曾經(jīng)所謂的非做不可，只是青蔥年華里自己給自己注射的一支強心劑，或者說，是自以為是的精神寄托罷了。也曾經(jīng)好像已經(jīng)下定了決心去做某件事，但更多的時候是最后又打起了退堂鼓。s time, your ideas are always special to clear. Want, want, line is clear, as if nothing could shake his. Also once seemed to be determined to do something, but more often is he backed out at last. Dislike his cowardice, finally found that there are a lot of love, there are a lot of miss, like shadow really have been doomed. Those who do, just green years oneself give oneself an arm injection, or is a selfrighteous spiritual. 一個人的時候，自己的想法總是特別地清晰。 Originally, this world, can produce a chemical reaction to an event, in addition to resolutely, have to do, and time. 原來，這個世界上，對某個事件能產(chǎn)生化學(xué)反應(yīng)的，除了非做不可的堅決，還有，時間。t want to give vent to out your inner voice can be in the high school children of the feelings in a period, but was eventually infarction when graduation party in the throat, later again stood on the pitch he has sweat profusely, looked at his thrown a basketball hoops, suddenly found himself has already can39。t really grow up, it seems is not so important。 The end of our life, and can meet many things really do? 而窮盡我們的一生，又能遇到多少事情是真正地非做不可？ During my childhood, think lucky money and new clothes are necessary for New Year, but as the advance of the age, will be more and more found that those things are optional?？傆X得自己自己似乎應(yīng)該去做點什么，或者寫點什么。 May be back in the past, to oneself the paranoid weird belief disillusionment, these days, my mind has been very messy, in my mind constantly. Always feel oneself should go to do something, or write something. Twenty years of life trajectory deeply shallow, suddenly feel something, do it. 一字開頭的年齡已經(jīng)到了尾聲。s actions. CSKA said they were surprised and disappointed by Toure39。s 21 win. Michel Platini, president of European football39。s Premier League match at Chelsea on Sunday. I am going to be at the match tomorrow and I have asked to meet Yaya Toure, he told BBC Sport. For me it39。s antiracism taskforce, is in London for the Football Association39。t charge you more than 35% of your pensation if you win the case. If you are thinking about signing up for a damagesbased agreement, you should make sure you39。t agree with the disciplinary action your employer has taken against you ? your employer dismisses you and you think that you have been dismissed unfairly. For more information about dismissal and unfair dismissal, see Dismissal. You can make a claim to an employment tribunal, even if you haven39。 } refresh_led()。 a[4] = sec/10000%10。 a[2] = sec/100%10。 a[0] = sec%10。 if(q==1) sec++。i++)。 if(counter == 1) { if(sw==0) for(i=0。 TL1 = 0x67。 uint16 i。 while(1)。 } } main() { timer1_init()。break。P2 = number[a[5]]。 case 5: d2 = 0。P3=0xff。j++。break。P2 = number[a[3]]。 無錫科技職業(yè)學(xué)院畢業(yè)設(shè)計（論文） 電子秒表的設(shè)計 22 case 3: d4 = 0。P3=0xff。j++。break。P2 = number[a[1]]。 case 1: d6 = 0。P3=0xff。j++。 } void refresh_led() { static uint8 j = 0。 } void int_init() { ET1 = 1。 TL1 = 0x67。= 0xdf。 void timer1_init() { TMOD |= 0x10。 sbit d6 = P3^5。 sbit d4 = P3^3。 sbit d2 = P3^1。 uint8 q=1。 uint8 a[6]。 typedef unsigned long uint32。 無錫科技職業(yè)學(xué)院畢業(yè)設(shè)計（論文） 電子秒表的設(shè)計 20 參考文獻 [1] 李朝青 . 單片機原理及接口技術(shù)（第 3 版） [M]. 北京：航空航天大學(xué)出版社，2020 [2] 趙建領(lǐng) . 51 系列單片機開發(fā)寶典 [M]. 北京：電子工業(yè)出版社， 2020 [3] 耿永剛，陶國正 . 單片機與接口應(yīng)用技術(shù) [M]. 上海：華東師范大學(xué)出版社，2020 [4] 孫惠芹 . 單片機項目設(shè)計教程 [M]. 北京：電子工業(yè)出版社， 2020 [5] 楊欣，王玉鳳，劉湘黔 . 電子 設(shè)計從零開始 [M]. 北京：清華大學(xué)出版社， 2020 [6] 余永權(quán) . ATMEL89 系列單片機應(yīng)用技術(shù) [M]. 北京：北京航空航天大 學(xué)出版社， 2020 無錫科技職業(yè)學(xué)院畢業(yè)設(shè)計（論文） 電子秒表的設(shè)計 21 附錄 附錄 1 系統(tǒng)總程序 include typedef unsigned char uint8。 接著，我還要感謝我的寢室同學(xué)和身邊的朋友，正是在這樣一個團結(jié)友愛，相互促進的環(huán)境中，在和他們的相互幫助和啟發(fā)中，才有我今天的小小收獲。主要是編程學(xué)的不太成功，在老師的細心指導(dǎo)下，然后再加以修改錯誤，最后完成設(shè)計。運行一段時間后，按一下停止按鈕，讓秒表停止?？匆幌嘛@示是否正確，時間運行是否符合運行軌跡。把單片機放到電路板上，進行整個系統(tǒng)程序的調(diào)試。如果出現(xiàn)閃爍現(xiàn)象，就要改變一下延時時間，直到合理為止。 首先是把顯示程序加載上去，進行調(diào)試時，看數(shù)碼管的顯示是否正確，還要看顯示的亮度是否 太暗或太亮，是否出現(xiàn)了閃爍現(xiàn)象，如果顯示不正確，就檢查一下數(shù)碼管的引腳和單片機的連線是否接錯了。在編譯調(diào)試通過以后，生成 hex 文件以待仿真之用。若運行結(jié)果不正確，首先應(yīng)根據(jù)程序運行的實際現(xiàn)象分析判斷哪些因素可引起相關(guān)故障，再通過調(diào)試方法逐一認證和排除。 （ 4）調(diào)試程序 調(diào)試程序時首先要明確程序的具體功能，對程序做認真分析。 （ 3）確定調(diào)試方案 在調(diào)試程序前一定要認真分析源程序，明確各功能程序運行的預(yù)期結(jié)果。 圖 32 仿真圖 無錫科技職業(yè)