【正文】 與其一味顧慮重重，不如從局外人的角度看待決策之事。 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，別再逃跑或隱藏痛苦，試著擁抱它吧；當(dāng)悲傷來襲時，試著深呼吸，然后直面它。 Have declared the end of the encounter that haven39。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。 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。s 21 win. Michel Platini, president of European football39。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 informu, take 基于單片機(jī)的溫度控制系統(tǒng)設(shè)計(jì) 參考文獻(xiàn) 23 advice from one of the anisations listed under Further help. Employment tribunals are less formal than some other courts, but it is still a legal process and you will need to give evidence under an oath or affirmation. Most people find making a claim to an employment tribunal challenging. If you are thinking about making a claim to an employment tribunal, you should get help straight away from one of the anisations listed under Further help. ation about dismissal and unfair dismissal, see Dismissal. You can make a claim to an employment tribunal, even if you haven39。為了系統(tǒng)正常工作， T1 中斷服務(wù)程序的執(zhí)行時間必須滿足 T0 的制一時間要求，因?yàn)?T1 的中斷是嵌套在 T0 中斷之中的。 通常，電阻爐爐溫控制采用偏差控制法。在允許輸入信號 OE的控制下，再將轉(zhuǎn)換結(jié)果輸入到外部數(shù)據(jù)總線?？梢灾苯永?MOVX A,DPTR 或 MOVX DPTR,A 指令完成這三個口的讀 /寫（輸入 /輸出）操作。 基于單片機(jī)的溫度控制系統(tǒng)設(shè)計(jì) 系統(tǒng)硬件設(shè)計(jì) 8 第三章 系統(tǒng)硬件設(shè)計(jì) 系統(tǒng)總體設(shè)計(jì) 系統(tǒng)控制主電路是由 8031及其外圍芯片，及一些輔助的部分構(gòu)成的。 2） 數(shù)據(jù)存儲器設(shè)計(jì) 由于算法的需要，在存儲器中需要存儲 24個從 A/D 片出來的數(shù)據(jù)，即需要24 單元的存儲單元。其值因芯片型號和制造廠商不同而異； VPP：編程電源輸入線，其值因芯片型號和制造廠商不同而異； OE—— ：讀選通信號輸入線，“ 0”有效； VCC：主電源輸入線，一般為＋ 5V； (B) 擴(kuò)展方法 擴(kuò)展程序存儲器時，一般擴(kuò)展容量大于 256 字節(jié)，因此，除了由 P0 口提供低 8 位地址線外，還需由 P2口提供若干地址線，最大的擴(kuò)展范圍位 64K 字節(jié)，即需 16 位地址線。并行擴(kuò)展法是利用單片機(jī)的三種線（ AB、 DB、 CB）進(jìn)行的系統(tǒng)擴(kuò)展；串行擴(kuò)展法是利用 SPI 三線總線或 I2C 雙總線的串行系統(tǒng)擴(kuò)展。 CPU 在從片外程序存儲器取指令（或常數(shù)）期間，每個機(jī)器周期兩次有效。VCC 掉電期間，此引腳可接上備用電源，一旦芯片在使用中 VCC 電壓突然下降或短電，能保護(hù)片內(nèi) RAN 中信息不丟失，使復(fù)電后能繼續(xù)正常運(yùn)行。另外，每一位均具有第二功能，每一位的兩個功能不能同時使用。為方便起見，我們把 4個端口和其中的鎖存器都統(tǒng)稱 P0~P3。 單片機(jī)內(nèi)部模塊 在本設(shè)計(jì)中 ,從經(jīng)濟(jì)上以及性能上考慮，我選用 8031 作為 CPU。產(chǎn)品工藝不同，控制溫度的精度也不同，因而對數(shù)據(jù)采集的精度和所采用的控制算法也不同。靜態(tài)控制精度為℃。傳統(tǒng)的溫度采集方法不僅費(fèi)時費(fèi)力，而且精度差，單片機(jī)的出現(xiàn)使得溫度的采集和數(shù)據(jù)處理問題能夠得到很好的解決。 8031的接口電路有 815 2764。8155 用于鍵盤 /LED 顯示器接口， 2764 可作為 8031 的外部 ROM 存儲器。 溫度是工業(yè)對象中的一個重要的被控參數(shù)。 本設(shè)計(jì)使用單片機(jī)作為核心進(jìn)行控制。 單片微型計(jì)算機(jī)的功能不斷的增強(qiáng)，為先進(jìn)的控制算法提供的載體，許多高性能的新型機(jī)種應(yīng)運(yùn)而生。 8031 是 MCS－ 51 系列單片機(jī)的一種型號。 在訪問片外擴(kuò)展存儲器時，低 8位地址和數(shù)據(jù)由 P0口分時傳送，高 8位地址由 P2 口傳送。 MCS— 51 單片機(jī)的引腳及其功能 MCS51 單片機(jī)采用 40引腳的雙列直插封裝形式。 ALE、 /PROG—— （ 30腳）：當(dāng)訪問片外存儲器時， ALE 的輸出用于鎖存低字節(jié)地址信號。每當(dāng)訪問片外存儲器時，這兩次有效的 PROG—— 信號將不會出現(xiàn)。但是，一般串行接口器件 速度慢，在需要高速應(yīng)用的場合，還是并行擴(kuò)展法占主導(dǎo)地位。具體方法是 CPU 應(yīng)向 EPROM 提供三種信號線。在 8031 的內(nèi)部數(shù)據(jù)存儲區(qū)低 128 字節(jié) RAM 中 30H~7FH 共80 個存儲單元使用戶 RAM 區(qū)，完全可以容納下 24 個數(shù)據(jù)以及其運(yùn)算過程中的臨時數(shù)據(jù)，故不需要在另外擴(kuò)展片外數(shù)據(jù)存儲器。 圖 系統(tǒng)設(shè)計(jì)原理圖 8155 接口電路 8155 芯片內(nèi)具有 256 個字節(jié)的 RAM，兩個 8 位 、一個 16 位的可編程 I/O口和一個 14 位計(jì)數(shù)器。工作在方式 Ⅲ 或方式 Ⅳ 時， C 口用作控制口或部分用于控制。 可控硅控制 電路 8031 對溫度的控制是 通過可控硅調(diào)控器實(shí)現(xiàn)的。偏差控制的原理是先求出史冊爐溫對所需爐溫的偏差值，然后對偏差值處理而獲得控制信號去調(diào)節(jié)電阻爐的假熱功率，以實(shí)現(xiàn)對電阻爐的爐溫控制。 T0 中斷服務(wù)程序 T0 中斷服務(wù)程序是溫度控制系統(tǒng)的主程序，用于啟動 A/D 轉(zhuǎn)換器，讀如數(shù)據(jù)采樣，數(shù)字濾波，越權(quán)溫度報警和處理， PID 計(jì)算和輸出可控硅的同步觸發(fā)脈沖等。t appealed against the disciplinary action your employer has taken against you. However, if you win your case, the tribunal may reduce any pensation awarded to you as a result of your failure to appeal. Remember that in most cases you must make an application to an employment tribunal within three months of the date when the event you are plaining about happened. If your application is received after this time limit, the tribunal will not usually accept i. If you are worried about how the time limits apply to you If you are being represented by a solicitor at the tribunal, they may ask you to sign an agreement where you pay their fee out of your pensation if you win the case. This is known as a damagesbased agreement. In England and Wales, your solicitor can39。s governing body, has also ordered an immediate investigation into the referee39。 Junior high school, thought to have a crush on just means that the real growth, but over the past three years later, his writing of alumni in peace, suddenly found that isn39。想要的，不想要的，界限明確，好像沒有什么可以撼動自己。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。如果我們一味逃避生活中的悲傷，悲傷只會變得更強(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 的感受。 From: The supersonic descent could happen as early as Sunda. 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. 基于單片機(jī)的溫度控制系統(tǒng)設(shè)計(jì) 參考文獻(xiàn) 26 Below, the Earth bees the concrete bottom of a swimming pool that he wants to land on, but