【導(dǎo)讀】第1章數(shù)字式秒表的設(shè)計(jì)介紹………………………數(shù)字式秒表硬件系統(tǒng)各模塊功能簡要介紹………并進(jìn)行系統(tǒng)仿真和實(shí)驗(yàn)。上電或按鍵復(fù)位后能自動(dòng)顯示系統(tǒng)提示符“P.”，進(jìn)入準(zhǔn)備工作狀態(tài)。秒表通過按鍵控制可實(shí)現(xiàn)開始計(jì)1時(shí)、暫停計(jì)時(shí)、連續(xù)計(jì)時(shí)、清零和停止功能。時(shí)公共陰極接地。每個(gè)發(fā)光二極管的陽極通過電阻與輸入端相連。直接和P1口相連，在按鍵和P1口之間通過10K電阻與+5V電源相連。數(shù)碼管動(dòng)態(tài)顯示接口是單片機(jī)中應(yīng)。開，該位就顯示出字形，沒有選通的數(shù)碼管就不會(huì)亮。碼管的的COM端，就使各個(gè)數(shù)碼管輪流受控顯示，這就是動(dòng)態(tài)驅(qū)動(dòng)。利用人眼視覺暫留特性來實(shí)現(xiàn)顯示的。由于各數(shù)碼管輪流顯示的時(shí)間間隔短、節(jié)奏快，人的眼睛反應(yīng)不過來，此方案成本低，而。且單片機(jī)的I/O口占用較少，可以節(jié)約單片機(jī)接口資源，而且功耗更低。8個(gè)獨(dú)立式鍵盤分別接在單片機(jī)的P1口上，以及其他部分構(gòu)成數(shù)字式秒。制下嚴(yán)格地按時(shí)序進(jìn)行工作。此電路采用12MHz的石英晶體。

　　

【正文】 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(gè)人的時(shí)候，自己的想法總是特別地清晰。想要的，不想要的，界限明確，好像沒有什么可以撼動(dòng)自己。也曾經(jīng)好像已經(jīng)下定了決心去做某件事，但更多的時(shí)候是最后又打起了退堂鼓。嫌惡過自己的怯懦，最終卻發(fā)現(xiàn)有很多 緣分 ，有很多錯(cuò)過，好像冥冥之中真的已經(jīng)注定。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(qiáng)心劑，或者說，是自以為是的精神寄托罷了。 At the moment, the sky is dark, the air is fresh factor after just rained. Suddenly thought of blue plaid shirt。 Those were broken into various shapes of stationery。 From the corner at the beginning of deep friendship。 Have declared the end of the encounter that haven39。t start planning... Those years, those days of do, finally, like youth, will end in our life. 此刻，天空是陰暗的，空氣里有著剛下過雨之后的清新因子。突然想到那件藍(lán)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(chǎng)還沒有開始就宣告了終結(jié)的邂逅計(jì)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。 Baumgartner the disappointing news: Mission aborted. r plays an important role in this mission. Starting at the ground, conditions have to be very calm winds less than 2 mph, with no precipitation or humidity and limited cloud cover. The balloon, with capsule attached, will move through the lower level of the atmosphere (the troposphere) where our 26 daytoday weather lives. It will climb higher than the tip of Mount Everest ( miles/ kilometers), drifting even higher than the cruising altitude of mercial airliners ( miles/ kilometers) and into the stratosphere. As he crosses the boundary layer (called the tropopause),e can expect a lot of turbulence. We often close ourselves off when traumatic events happen in our lives。 instead of letting the world soften us, we let it drive us deeper into ourselves. We try to deflect the hurt and pain by pretending it doesn’t exist, but although we can try this all we want, in the end, we can’t hide from ourselves. We need to learn to open our hearts to the potentials of life and let the world soften us. 生活發(fā)生不幸時(shí)，我們常常會(huì)關(guān)上心門；世界不僅沒能慰藉我們，反倒使我們更加消沉。我們假裝一切仿佛都不曾發(fā)生，以此試圖忘卻傷痛，可就算隱藏得再好，最終也還是騙不了自己。既然如此，何不嘗試打開心門，擁抱生活中的各種可能，讓世界感化我們呢？ Whenever we start to let our fears and seriousness get the best of us, we should take a step back and reevaluate our behavior. The items listed below are six ways you can open your heart more fully and pletely. 當(dāng)恐懼與焦慮來襲時(shí)，我們應(yīng)該退后一步，重新反思自己的言行。下面六個(gè)方法有助于你更完滿透徹地敞開心扉。 Whenever a painful situation arises in your life, try to embrace it instead of running away or trying to mask the hurt. When the sadness strikes, take a deep breath and lean into it. When we run away from sadness that’s unfolding in our lives, it gets stronger and more real. We take an emotion that’s fleeting and make it a solid event, instead of something that passes through us. 當(dāng)生活中出現(xiàn)痛苦的事情時(shí)，別再逃跑或隱藏痛苦，試著擁抱它吧；當(dāng)悲傷來襲時(shí)，試著深呼吸，然后直面它。如果我們一味逃避生活中的悲傷，悲傷只會(huì)變得更強(qiáng)烈更真實(shí) —— 悲傷原本只是稍縱即逝的情緒，我們卻固執(zhí)地耿耿于懷 By utilizing our breath we soften our experiences. If we dam them up, our lives will stagnate, but when we keep them flowing, we allow more newness and greater experiences to 。屏住呼吸，生活停滯；呼出呼吸，更多新奇與經(jīng)歷又將拉開序幕。 2. Embrace the unfortable We all know what that twinge of anxiety feels like. We know how fear feels in our bodies: the tension in our necks, the tightness in our stomachs, etc. We can practice leaning into these feelings of disfort and let them show us where we need to ，也都感受過恐懼造成的生理反應(yīng)：脖子僵硬、胃酸翻騰。其實(shí)，我們有能力面對(duì)這些痛苦的感受，從中領(lǐng)悟到出路。 The initial impulse is to run away — to try and suppress these feelings by not acknowledging them. When we do this, we close ourselves off to the parts of our lives that we need to experience most. The next time you have this feeling of being truly unfortable, do yourself a favor and lean into the feeling. Act in spite of the fear. 我們的第一反應(yīng)總是 逃避 —— 以為否認(rèn)不安情緒的存在就能萬事大吉，可這也恰好妨礙了我們經(jīng)歷最需要的生活體驗(yàn)。下次感到不安時(shí)，不管有多害怕，也請(qǐng)?jiān)囍赂颐鎸?duì)吧。 3. Ask your heart what it wants 傾聽內(nèi)心 We’re often confused at the next step to take, making pros and cons lists until our eyes bleed and our brains are sore. Instead of always taking this approach, what if we engaged a new part of ourselves that isn’t usually involved in the decision making process?我們常對(duì)未來猶疑不定，反復(fù)考慮利弊直到身心俱疲。與其一味顧慮重重，不如從局外人的角度看待決策之事。 From: The supersonic descent could happen as early as Sunda. 27 The weatheThe balloon will slowly drift to the edge of space at 120,000 feet (Then, I would assume, he will slowly step out onto something resembling an Olympic diving platform. Below, the Earth bees the concrete bottom of a swimming pool that he wants to land on, but not too hard. Still, he39。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。s not needed. Instead, he plans to deploy his 270squarefoot (25squaremeter) main chute at an altitude of around 5,000 feet (1,524 meters). In order to deploy this chute successfully, he will have to slow to 172 mph (277 kph). He will have a reserve parachute that will open automatically if he loses consciousness at mach speeds. Even if everything goes as planned, it won39。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