【正文】 LD2:MOV R2,0BBH LD1:NOP DJNZ R2,LD1 DJNZ R1,LD2 RET ALARM:SETB 。報(bào)警次數(shù)加一 CJNE R0,0AH,LP1 MOV R0,00HLP1:MOV A,R0 。10S鐘定時(shí): MOV 50H,14H 。 10S循環(huán)次數(shù) MOV TMOD,01H 。置50ms定時(shí)初值 MOV TH0,3CH SETB TR0 。查詢記數(shù)溢出 SJMP L2 L1:CPL CPL MOV TL0,0B0H 。未到1S繼續(xù)循環(huán) CPL CPL MOV 50H,14H DJNZ 51H,L2 。10s到關(guān)閉報(bào)警 CLR CLR 。循環(huán),繼續(xù)工作 END 其中，10秒鐘的定時(shí)采用定時(shí)器T0定時(shí)工作在方式1 ,單片機(jī)晶振Fosc=12MHz，所以機(jī)器周期T=12t0=12(1/12MHz)=1us 設(shè)定時(shí)器T0初始值為X，則：(2∧16X)1us=50ms 從而可知定時(shí)器T0初始值X= 6553650000=15536=3CB0H,在此用50H、51H單元分別進(jìn)行1秒和10秒的計(jì)數(shù)，它們內(nèi)的賦值分別為14H、0AH ，T0的初值置為TL0=0B0H、TH0=3CH。外部中斷0服務(wù)程序開始，屏蔽外部中斷 PUSH PSW PUSH ACC JNB ,LN 。延時(shí)消抖 JNB ,LN1 AJMP LN2 。使報(bào)警結(jié)束，綠指示燈亮 POP ACC POP PSW SETB EX0 。在中斷繼續(xù)檢測(cè)是否有輸入信號(hào) LN2:RETI 以上程序所編寫的程序，通過(guò)Keil 編譯軟件已經(jīng)編譯通過(guò)，同時(shí)運(yùn)行效果已經(jīng)通過(guò)仿真軟件Proteus仿真，可以達(dá)到預(yù)定設(shè)計(jì)的目的，仿真效果圖如下圖36所示 ； 圖36:結(jié)果仿真效果圖 通過(guò)仿真圖可以看出,該設(shè)計(jì)程序的結(jié)果達(dá)到了預(yù)期的目的,通過(guò)多次調(diào)試和修改，且在程序設(shè)計(jì)過(guò)程中應(yīng)考慮到各方面的干擾以及輸入輸出信號(hào)在工作中的不穩(wěn)定因素，都應(yīng)該在程序設(shè)計(jì)或硬件外圍電路中對(duì)這些干擾和不穩(wěn)定因素進(jìn)行消除和穩(wěn)定。所以，此次設(shè)計(jì)的報(bào)警器靈敏度高，操作簡(jiǎn)單、靈活、易用。在畢業(yè)設(shè)計(jì)即將結(jié)束之即，再次對(duì)幫助過(guò)我的同學(xué)、和教誨過(guò)我的各位老師表示忠心的感謝，特別是我的指導(dǎo)教師張春艷老師，在我的畢業(yè)設(shè)計(jì)過(guò)程中給了我很大的幫助和細(xì)心指導(dǎo)，張老師不但知識(shí)廣博、治學(xué)嚴(yán)謹(jǐn)、實(shí)踐經(jīng)驗(yàn)豐富，而且寬厚待大，和藹可親，讓我受益非淺，再次表示感謝。一并表示感謝。 you don39。 your employer dismisses you and you think that you have been dismissed unfairly.For more information about dismissal and unfair dismissal, seetagainst 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 it.If you are worried about how the time limits apply to you, take advice from one of the organisations listed underFurther help.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 at charge you more than 35% of your pensation a damagesbased agreement, you should make sure you39。To find your nearest CAB, including those that give advice by , click onEmployment tribunals.The (lack of) air up there Watch mCayman Islandsbased Webb, the head of Fifa39。s 150th anniversary celebrations and will attend City39。s about how he felt and I would like to speak to him first to find out what his experience was.Uefa hasfor the racist behaviour of their fans durings 21 win.Michel Platini, president of European football39。s actions.CSKA said they were surprised and disappointed by Toure39。 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?？傆X得自己自己似乎應(yīng)該去做點(diǎn)什么，或者寫點(diǎn)什么。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。t really grow up, it seems is not so important。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。Originally, this world, can produce a chemical reaction to an event, in addition to resolutely, have to do, and time.　　原來(lái)，這個(gè)世界上，對(duì)某個(gè)事件能產(chǎn)生化學(xué)反應(yīng)的，除了非做不可的堅(jiān)決，還有，時(shí)間。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(gè)人的時(shí)候，自己的想法總是特別地清晰。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。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(shuō)，是自以為是的精神寄托罷了。 Those were broken into various shapes of stationery。 Have declared the end of the encounter that haven39。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(méi)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。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 jumpWhen 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。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 there32