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基于at89c51單片機的電子密碼鎖的設(shè)計(參考版)

2025-01-21 14:11本頁面
  

【正文】 A person39。t remember his appearance.    童年時,覺得壓歲錢和新衣服是過年必備,但是隨著年齡的推進,會越來越發(fā)現(xiàn),那些東西根本就可有可無;初中時,以為要有一場暗戀才意味著真正的成長,但三年過去后,自己心平氣和的寫同學錄的時候,突然就發(fā)現(xiàn)是不是真正的成長了,好像并沒有那么重要了;然后到了高中,覺得非要吐露出自己的心聲才能為高中生涯里的懵懂情愫劃上一個句點,但畢業(yè)晚會的時候最終還是被梗塞在了咽喉,后來再次站在他曾經(jīng)揮汗如雨的球場,看著他投過籃球的球框時,突然間發(fā)現(xiàn)自己已經(jīng)想不起他的容顏。 Then in high school, think don39。 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。二十年的人生軌跡深深淺淺,突然就感覺到有些事情,非做不可了。或許是愧疚于自己似乎把轉(zhuǎn)瞬即逝的很多個不同的日子過成了同一天的樣子;或許是追溯過去,對自己那些近乎偏執(zhí)的怪異信念的醒悟,這些天以來,思緒一直很凌亂,在腦海中不斷糾纏。s plaint. In a statement the Russian side added: We found no racist insults from fans of CSKA.Age has reached the end of the beginning of a word. May be guilty in his seems to passing a lot of different life became the appearance of the same day。s governing body, has also ordered an immediate investigation into the referee39。s about how he felt and I would like to speak to him first to find out what his experience was.Uefa has opened disciplinary proceedings against CSKA for the racist behaviour of their fans during City39。s 150th anniversary celebrations and will attend City39。re clear about the terms of the agreement. It might be best to get advice from an experienced adviser, for 43example, at a Citizens Advice Bureau. To find your nearest CAB, including those that give advice by , click on nearest CAB.For more information about making a claim to an employment tribunal, see Employment tribunals.The (lack of) air up there Watch mCayman Islandsbased Webb, the head of Fifa39。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 it.If you are worried about how the time limits apply to you, take 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.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。以下為數(shù)碼顯示子程序DISP: CLR 41MOV P0,LED_BIT_8LCALL DLY_SSETB CLR MOV P0,LED_BIT_7LCALL DLY_SSETB CLR MOV P0,LED_BIT_6LCALL DLY_SSETB CLR MOV P0,LED_BIT_5LCALL DLY_SSETB CLR MOV P0,LED_BIT_4LCALL DLY_SSETB CLR MOV P0,LED_BIT_3LCALL DLY_SSETB CLR MOV P0,LED_BIT_2LCALL DLY_SSETB CLR MOV P0,LED_BIT_1LCALL DLY_SSETB 42RETDLY_S:MOV R6,10D1:MOV R7,250DJNZ R7,$DJNZ R6,D1RETDLY_L:MOV R5,100D2:MOV R6,100D3:MOV R7,248DJNZ R7,$DJNZ R6,D3DJNZ R5,D2RETFINI: NOPENDg an employment tribunal claimEmployment tribunals sort out disagreements between employers and employees.You may need to make a claim to an employment tribunal if:? you don39。段碼,輸入密碼左移子程序SHIFTL:MOV LED_BIT_6,LED_BIT_5MOV LED_BIT_5,LED_BIT_4MOV LED_BIT_4,LED_BIT_3MOV LED_BIT_3,LED_BIT_2MOV LED_BIT_2,LED_BIT_1MOV LED_BIT_1,40HMOV KEY_6,KEY_5MOV KEY_5,KEY_4MOV KEY_4,KEY_3MOV KEY_3,KEY_2MOV KEY_2,KEY_1MOV KEY_1,VALRET。密碼錯誤報警JB TR0,$LCALL DLY_LRET。等待按鍵抬起MOV A,P3CJNE A,0FH,W21LJMP A0W21:MOV A,P3CJNE A,0F0H,W22LJMP A0W22:SJMP W20LJMP A0ALARM_1:SETB TR0 。按下數(shù)字鍵MOV A,KEY_CNTCJNE A,07H,K1LCALL ALARM_1W10:LCALL DISP 。判斷是否為ENTER鍵MOV R1,KEY_CNTCJNE R1,06H,J4MOV A,WORD_1 。是否為CLR鍵MOV R1,KEY_CNTCJNE R1,00H,J2LCALL ALARM_1LJMP START J2: LCALL SHIFTR DEC KEY_CNTW00:LCALLDISP 。計算鍵值MOV B,03HMUL ABADD A,ROWMOV VAL,A。掃描行碼L1:JNB ,L2LCALL DLY_SJNB ,L2MOV LINE,00HLJMP RSCANL2:JNB ,L3LCALL DLY_SJNB ,L3MOV LINE,01HLJMP RSCANL3:JNB ,L4LCALL DLY_SJNB ,L4MOV LINE,02HLJMP RSCANL4:JNB ,A0LCALL DLY_SJNB ,A0MOV LINE,03HRSCAN:MOV P3,0FH 。設(shè)置初始密碼為123456MOV WORD_2,5MOV WORD_3,4MOV WORD_4,3MOV WORD_5,2MOV WORD_6,1MOV TMOD,01H36MOV TH0,(65536700)/256MOV TL0,(65536700)MOD 256MOV IE,82HA0:LCALL DISP。段碼存儲區(qū)清 0MOV LED_BIT_2,00HMOV LED_BIT_3,00HMOV LED_BIT_4,00HMOV LED_BIT_5,00HMOV LED_BIT_6,00HMOV LED_BIT_7,79HMOV LED_BIT_8,73HMOV KEY_1,00H 。以下為初始化程序,包括數(shù)據(jù)存儲空間初始化,設(shè)置初始密碼ORG 00H35SJMP STARTORG 0BHLJMP INT_T0START:MOV CNT_A,00H 。按鍵列號VAL EQU 49H 。已輸出的密碼位數(shù)LINE EQU 47H 。以下 6 個字節(jié)存放初始密碼WORD_1 EQU 38HWORD_2 EQU 39HWORD_3 EQU 3AHWORD_4 EQU 3BHWORD_5 EQU 3CHWORD_6 EQU 3DH。在此對他們表示衷心的感謝,他們的名字我一直銘記在心!最后,衷心感謝在百忙之中抽出時間審閱本論文的專家教授。感謝09級機電2班的各位同窗好友,他們的關(guān)心和愛護讓我在這個集體里倍感溫暖,一起走過的日子將成為我人生的美好回憶。在此對謝老師以及幫助過我的同學表示深深的感謝。除此之外,他還教了我一些做人的道理。他的循循善誘的教導、不拘一格的思路和為人處世的坦蕩也給予我無盡的啟迪。從開始選題到中期修正,再到最終定稿,他的指導使我受益匪淺。經(jīng)過自己不斷的搜索努力以及同學和指導老師的耐心指導和熱情幫助,本設(shè)計已經(jīng)基本完成。本次經(jīng)歷將是我在大學時期很好的一次實踐和鍛煉機會。讓我知道做任何事情都應(yīng)腳踏實地,刻苦努力地去做。(3)通過本次畢業(yè)設(shè)計,讓我了解到電子技術(shù)和軟件編程對當今人們生活的重要性。通過本次設(shè)計,我不但對單片機有了更為深入的了解,對一個課題如何畫流程圖,編程序等,有了一定的認識。本次設(shè)計我能獨立完成,算是有了很大的收獲。同時,在圖書館里、網(wǎng)上查閱資料,攻克了畢業(yè)設(shè)計中的道道難題。在做畢業(yè)設(shè)計的初期階段,難度很大,沒有頭緒。三個月的時間里不僅讓我對學過的單片機知識有了很多的鞏固,同時也對單片機這一門課程產(chǎn)生了更大的興趣并讓我對專業(yè)知識有了更深的理解。因此,從仿真結(jié)果可以看出,本設(shè)計可以得到預期的仿真效果。當從按鍵輸入正確密碼后,燈亮。后來經(jīng)過自己慢慢摸索及老師和同學的幫助,這些問題都得到了一一的解決。在仿真的過程中因自己操作的粗心及對本軟件相關(guān)知識的掌握程度還不夠使得一些問題涌現(xiàn)了出來。仿真結(jié)果如圖 所示。仿真結(jié)果如圖 所示。在 CLOCK FREQUENCY 欄中設(shè)置
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