【正文】 es and greetings, even multiple names and titles for the same person. The first half hour must be a swamp to wade through, very much like my experience of getting through a Tolstoy tome with its endless inflections of names transliterated into lengthy Chinese. I see the choice of verbatim translation as an effort for conveying exotica. It is fairly petent, with no error that I could detect, but fails to rise above words or capture the 西南民族大學(xué)畢業(yè)設(shè)計(jì) 基于 8051 單片機(jī)的 8 路搶答器 3 essence of the language. A cultural product usually crosses over to a foreign territory first by an emphasis on the monalities. But whether inside or outside China, the temptation to sell it for the differences is just too great. Sure, the sumptuous sets and costumes are a big attraction, but the narrative technique has bee－ how shall I put it?－ a bit anglicized, which is necessary for cultural export. Judging by the responses, this legend, which, contrary to the claim of the English trailer, is totally fictitious, has departed from China but not yet landed on American shores. I am a big fan of Ralph Waldo Emerson39。s president, who is also a renowned tenor, tells China Daily. During a tour in 1985, he went to a village and met an elderly local man, who told him a story about his friendship with a solider from Shenyang, capital of Northeast China39。t just about sharing art with nomadic families but also about gaining inspiration for the music and dance. Ulan Muqir literally translates as red burgeon, and today39。s Zhangye city during their journey to Kazakhstan, May 5, 2022. The caravan, consisting of more than 100 camels, three horsedrawn carriages and four support vehicles, started the trip from Jingyang county in Shaanxi on Sept 19, 2022. It will pass through Gansu province and Xinjiang Uygur autonomous region, and finally arrive in Almaty, formerly known as AlmaAta, the largest city in Kazakhstan, and Dungan in Zhambyl province. The trip will cover about 15,000 kilometers and take the caravan more than one year to plete. The caravan is expected to return to Jingyang in March 2022. Then they will e back, carrying specialty products from Kazakhstan A small art troupe founded six decades ago has grown into a household name in the Inner Mongolia autonomous region. In the 1950s, Ulan Muqir Art Troupe was created by nine young musicians, who toured remote villages on horses and performed traditional Mongolian music and dances for nomadic families. The 54yearold was born in Tongliao, in eastern Inner Mongolia and joined the troupe in says there are 74 branch troupes across Inner Mongolia and actors give around 100 shows every year to local nomadic people. I can still recall the days when I toured with the troupe in the early 39?？梢哉f如果沒有他們的幫助我就不可能順利的按時(shí)完成畢業(yè)設(shè)計(jì)。他們的無私幫助和耐心指導(dǎo)也是我得以完成本課題的關(guān)鍵。恩師那治學(xué)嚴(yán)謹(jǐn)?shù)膽B(tài)度，淵博的學(xué)識感染著我。主顯示屏將顯示該違規(guī)組號，及發(fā)出提示音。 (8) 重設(shè)倒計(jì)時(shí)時(shí)間 需要重新設(shè)置倒計(jì)時(shí)時(shí)間 ,可按 倒計(jì)時(shí)重設(shè) 鍵，屏幕顯示。需要返回 0待命狀態(tài)，按 取消 鍵即可。 (4) 測試各組搶答按鍵 試按一下各組的搶答按鈕，應(yīng)立即顯示該組的組別數(shù)字，同時(shí)機(jī)內(nèi)喇叭發(fā)出叮咚 的提示音，按 取消 鍵，返回 0閃爍狀態(tài)。 (2) 設(shè)定 搶答 倒計(jì)時(shí)時(shí)間 在顯示屏左邊的 搶答 指示燈亮，數(shù)碼顯示時(shí)，按 +、 鍵可以設(shè)定搶答倒計(jì)時(shí)時(shí)間，在 199 秒之間設(shè)定，按住 +或 鍵不放，可以快速累加或累減。 CPL 。取回號數(shù) MOV R5,0BH MOV R4,0BH。犯規(guī)號數(shù)暫存與 (34H) HERE: MOV A,R0 CJNE A,0AH,FLASH。 MOV A,R2 MOV R6,A MOV R3,04H CLR OK AJMP COUNT TRUE5:ACALL BARK。搶答時(shí)間 R2 送 R6 西南民族大學(xué)畢業(yè)設(shè)計(jì) 基于 8051 單片機(jī)的 8 路搶答器 17 MOV R3,01H CLR OK。 按鍵發(fā)聲 MOV A,R2。計(jì)時(shí)一秒 R6 自動減 1 MOV R0,00H CHECK: JNB ,QUIT。下面系 1s 的情況 ,響并顯示號數(shù)并清 R0,重新計(jì) SETB RING MOV A,R6 JZ QUIT。取十位 MOV R4,31H。R6 保存了倒計(jì)時(shí)的時(shí)間 ,之前先將搶答時(shí)間或回答時(shí)間給 R6 MOV B,0AH DIV AB。 MOV R1,00H ACALL DELAY1 AJMP INT0SUB ADD0: INC R1 ACALL DELAY1 AJMP INT0SUB DEC0: MOV A,R1 西南民族大學(xué)本科畢業(yè)論文 14 JZ SETR1。 為 +1s 鍵 ,如按下跳到 INCO JNB ,DEC0。進(jìn)入倒計(jì)時(shí)程序 ,查詢有效搶答的程序 在 COUNT里面 NEXT: JNB ,FALSE0 JNB ,FALSE1 JNB ,FALSE2 JNB ,FALSE3 JNB ,FALSE4 JNB ,FALSE5 JNB ,FALSE6 JNB ,FALSE7 AJMP START ； ***非法搶答處理程序 *** FALSE0: ACALL BARK。按鍵發(fā)聲 MOV A,R1 MOV R6,A。允許四個中斷 ,T0/T1/INT0/INT1 CLR OK CLR RING SETB TR1 SETB TR0。初設(shè)答題時(shí)間為 10s MOV TMOD,11H。搶答開始標(biāo)志位 。當(dāng)在掃描到有人按下了鍵，馬上關(guān)閉 T0、調(diào)用顯示程序、封鎖鍵盤。 其中 555 構(gòu)成多諧振蕩器，振蕩頻率 fo＝ 1． 43／［（ RI＋ 2R2） C］，其輸出信號經(jīng)三極管推動揚(yáng)聲器。 選手在設(shè)定的時(shí)間內(nèi)搶答時(shí)，實(shí)現(xiàn)：優(yōu)先判斷、編號鎖存、編號顯示、揚(yáng)聲器提示。 8051 驅(qū)動喇叭的信號為各種頻率的脈沖。 圖 可預(yù)置時(shí)間的定時(shí)電路 由節(jié)目主持人根據(jù)搶答題的難易程度，設(shè)定一次搶答的時(shí)間，通過預(yù)置時(shí)間電路對計(jì)數(shù)器進(jìn)行預(yù)置，計(jì)數(shù)器的時(shí)鐘脈沖由秒脈沖電路提供。此外， RESET/Vpd 還是一復(fù)用腳， VCC 掉電期間，此腳可接上備用電源，以保證單片機(jī)內(nèi)部 RAM 的數(shù)據(jù)不丟失。 (3)復(fù)位電路的設(shè)計(jì) 當(dāng) MCS5l 系列單片機(jī)的復(fù)位引腳 RST(全稱 RESET)出現(xiàn) 2 個機(jī)器周期以上的高電平時(shí)，單片機(jī)就執(zhí)行復(fù)位 *作。如有再次搶答需由主持人將 S 開關(guān)重新置 ,“ 清除 ” 然后再進(jìn)行下一輪搶答。工作過程：開關(guān) S 置于 “ 清除 ” 端時(shí)， RS 觸發(fā)器的 端均為 0,4 個觸發(fā)器輸出置 0，使 74LS148 的 ＝ 0，使之處于工作狀態(tài)。當(dāng)一輪搶答之后，定時(shí)器停止、禁止二次搶答、定時(shí)器顯示剩余時(shí)間。 系統(tǒng)的硬件構(gòu)成及功能 搶答器 的電路框圖 如圖 1 1 所示為 電路 框圖。首先由主持人根據(jù)題目的難易程度，可以用 “JIA SHI” 和 “JIAN SHA” 兩個按鍵，設(shè)定時(shí)間在（ 0S99S）之間，然后再由主持人發(fā)布搶答命令（按下 KS 按鍵）同時(shí)發(fā)光二極管隨即變亮，當(dāng)看到二極管亮，進(jìn)入倒計(jì)時(shí)狀態(tài)和搶答狀態(tài)。選手在設(shè)定的時(shí)間內(nèi)進(jìn)行搶答，搶答有效，定時(shí)器停止工作，顯示器顯示選手編號和搶答時(shí)刻的時(shí)間，并保持到主持人將系統(tǒng)清 0 為止。搶答器具有計(jì)分、顯示功能。 本設(shè)計(jì)任務(wù)及要求 任務(wù)： 設(shè)計(jì)一個供 8 名選手參加八路掃描式搶答器。主持人按一下啟動鍵后，搶答開始。 八路掃描式搶答器的概述 本文介紹的八路數(shù)顯搶答器具有電路簡單、成本較低、操作方便、靈敏可靠等優(yōu)點(diǎn) ， 經(jīng)使用效果良好 , 具有較高的推廣價(jià)值。因此，我們制作了這款簡易八路搶答器屏棄了成本高，體積大，而且操作復(fù)雜。 Key lock, in effective condition, buttons invalid illegal 【 Key Words】 vies to implement microcontroller LED digital The timer/counters speaker . 西南民族大學(xué)畢業(yè)設(shè)計(jì) 基于 8051 單片機(jī)的 8 路搶答器 1 目 錄 第 1 節(jié) 引 言 ?????????????????????????? 1 搶答器的概述 ??????????????????????? 1 本設(shè)計(jì)主要任務(wù) ??????? ??????????????? 1 系統(tǒng)主要功能 ???????????????????????