【正文】 要完全模擬，可根據(jù)實際需要去主程序初始化過程中完成。由于軟件看門是高級中斷，它將阻止說要中斷響應(yīng)，由此可見清除中斷激活標(biāo)志的重要性。 “冷啟動”時，系統(tǒng)的狀態(tài)全部無效，進(jìn)行徹底的初始化操作；而“熱啟動”時，對系統(tǒng)的當(dāng)前狀態(tài)進(jìn)行修復(fù)和有選擇的初始化。從軟件的功能來看可分為兩大類：一類是執(zhí)行軟件，它能完成各 種實質(zhì)性的功能，如測量，計算，顯示，打印 [8]，輸出控制和通信等，另一類是監(jiān)控軟件，它是專門用來協(xié)調(diào)各執(zhí)行模塊和操作者的關(guān)系，在系統(tǒng)軟件中充當(dāng)組織調(diào)度角色的軟件。各執(zhí)行模塊規(guī)劃好后，就可以監(jiān)控程序了。 軟件任務(wù)分析的另一個內(nèi)容是如何安排監(jiān)控軟件和各執(zhí)行模塊。 顯示子程序的設(shè)計 顯示子程序，及部分注解如下 ： DISPLAY:MOV DPTR,DAT1。RING 標(biāo)志位為 1時候 口不斷取反使喇叭發(fā)出一定頻率的聲音 OUT: RETI T1 溢出中斷 (計時程序 )： T1INT: MOV TH1,3CH MOV TL1,0B0H INC R0 RETI END 搶答器處理程序的設(shè)計 搶答器處理程序 ： TRUE1: ACALL BARK。 MOV A,R2 MOV R6,A MOV R3,02H CLR OK AJMP COUNT TRUE3:ACALL BARK。 MOV A,R2 MOV R6,A MOV R3,06H CLR OK AJMP COUNT TRUE7: ACALL BARK。響鈴標(biāo)志位 ORG 0000H AJMP MAIN ORG 0003H AJMP INT0SUB ORG 000BH AJMP T0INT ORG 0013H AJMP INT1SUB ORG 001BH AJMP T1INT ORG 0040H MAIN: MOV R1,30 。越高發(fā)聲頻率越高 ,越尖 MOV TH1,3CH MOV TL1,0B0H 。未開始搶答時候顯示 FFF JB ,NEXT ACALL DELAY JB ,NEXT 。搶答標(biāo)志位 ,用于 COUNT 只程序中判斷是否查詢搶答 MOV R3,0AH 。先在兩個時間 LED 上顯示 R1 JNB ,INC0 。如果不是 99,R2 加 1,如果加到 99,R1就置 0，重新加起。=====倒計時程序 (搶答倒計時和回答倒計時都跳到改程序 )===== COUNT: MOV R0,00H。除十分出個位 /十位 MOV 30H,A。取個位 MOV A,R6 程序分析 2 31 SUBB A,07H JNC LARGER。計時完畢 MOV R0,00H DEC R6。如按下停止鍵退出 ACALL DISPLAY JB OK,ACCOUT。按鍵發(fā)聲 MOV A,R2 MOV R6,A。 MOV A,R2 MOV R6,A MOV R3,03H CLR OK AJMP COUNT TRUE4:ACALL BARK。 MOV A,R2 MOV R6,A MOV R3,07H CLR OK AJMP COUNT TRUE8: ACALL BARK。 向下運(yùn)行 滅并停響 CLR RING MOV R3,0AH MOV R4,0AH MOV R5,0AH。顯示 FF 和號數(shù) AJMP CHECK1 CHECK1: JNB ,QUIT1 ACALL DISPLAY AJMP HERE QUIT1: CLR RING CLR OK AJMP START 。第一個為零 ,其他與上相同 ,因為十位如果為零顯示熄滅 。按鍵發(fā)聲 RET 。=====T1 溢出中斷 (計時程序 )===== T1INT: MOV TH1,3CH MOV TL1,0B0H INC R0 RETI END 第五 章 設(shè)計小結(jié) 本文研究與設(shè)計的八路多功能搶答器采用了通用的電子元器件， 利 用 2 31 AT89S51單片機(jī)及外圍接口實現(xiàn)搶答系統(tǒng) ， 利用單片機(jī)的定時器 /計數(shù)器定時和記數(shù)的原理，將軟、硬件有機(jī)地結(jié)合起來，使得系統(tǒng)能夠正確地進(jìn)行計時， 同時使數(shù)碼管能夠正確地顯示時間。通過 系統(tǒng)的仿真研究得出 。在這次設(shè)計中遇到了很多實際性的問題，在實際設(shè)計中才發(fā)現(xiàn)，書本上理論性的東西與在實際運(yùn)用中的還是有一定的出入的，所以有些問題不但要深入地理解，而且要不斷地更正以前的錯誤思維。因此在整個設(shè)計過程中大部分時間是用在程序上面的。在設(shè)計過程中我發(fā)現(xiàn)自己考慮問題很不全面，自己的專業(yè)知識掌握的很不牢固，所掌握的計算機(jī)應(yīng)用軟件還不夠多，我希望自己的這些不足之處能在今后的工作和 學(xué)習(xí)中得到改善。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, 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。s 00 2 31 150th anniversary celebrations and will attend City39。s governing body, has also ordered an immediate investigation into the referee39。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。 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。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(jìn)，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(xué)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(diǎn)。 Then in high school, think don39。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。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 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。re clear about the terms of the agreement. It might be best to get advice from an experienced adviser, for example, 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。 參 考文獻(xiàn) [1] 陳大欽編 .電子技術(shù)基礎(chǔ)實驗 (第二版 )[M].湖北 :機(jī)械工業(yè)出版社 ,2021 00 2 31 [2] 李廣弟 .單片機(jī)基礎(chǔ) [M].北京 :北航出版社， 2021 [3] 胡學(xué)海 .單片機(jī)原理及應(yīng)用系統(tǒng)設(shè)計 [M].北京：京電子工業(yè)出版社， 2021 [4] 盧飛躍 .紅外遙控多路搶答器的設(shè)計 [J].番禺職業(yè)技術(shù)學(xué)報， 2021，2(2):1012. [5] 王公堂 .基于 IP1C68F73 的 61 路搶答 器 [J].電腦開發(fā)與應(yīng)用， 2021，9(9):8384 [6] 梁超 .一款基于單片機(jī)技術(shù)的電子搶答器 [J].機(jī)電工程技術(shù)， 2021，34(1):4852 g an employment tri