【正文】 than 2 mph, with no precipitation or humidity and limited cloud cover. The balloon, with capsule attached, will move through the lower level of the atmosphere (the troposphere) where our daytoday weather lives. It will climb higher than the tip of Mount Everest ( miles/ kilometers), drifting even higher than the cruising altitude of mercial airliners ( miles/ kilometers) and into the stratosphere. As he crosses the boundary layer (called the tropopause),e can expect a lot of turbulence. 第 21 頁 共 21 頁 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. Below, the Earth bees the concrete bottom of a swimming pool that he wants to land on, but not too hard. Still, he39。想要的，不想要的，界限明確，好像沒有什么可以撼動(dòng)自己。s governing body, has also ordered an immediate investigation into the referee39。 InitialTimer2()。Music_Two[0]。 } } } if(Keyamp。 //中斷標(biāo)志清除 ( Timer2 必須軟件清標(biāo)志 !) if(++Timer0Count=SystemSpeed) { Timer0Count = 0。 LEDIndex = (LEDIndex+1)%16。 if(LEDIndex==15) LEDDirection = !LEDDirection。 P2 = 0xFF。 } unsigned int code SpeedCode[]={ 1, 2, 3, 5, 8, 10, 14, 17, 20, 30, 40, 50, 60, 70, 80, 90, 100, 120, 140, 160, 180, 200, 300, 400, 500, 600, 700, 800, 900,1000}。0x32。 void Display(unsigned char Value) { P3 = LEDDisplayCode[Value]。有錯(cuò)誤就改正，直到?jīng)]有錯(cuò)誤，最后生成． HEX 文件，再用 peoteus 畫好硬件電路圖，將單片機(jī)指向剛生成的． HEX 文件并進(jìn)行仿真調(diào)試，在調(diào)試過程當(dāng)中通過調(diào)試的結(jié)果完善程序。相應(yīng)方式由數(shù)碼管顯示出來，每當(dāng)模式按鈕按下時(shí)，相應(yīng)的模式加一 ，數(shù)碼管顯示相應(yīng)模式。 第 1 頁 共 21 頁 廣東機(jī)電職業(yè)技術(shù)學(xué)院 電子產(chǎn)品設(shè)計(jì) 論文題目 : 多功能迷你跑馬音樂盒 專 業(yè) : 計(jì)算機(jī)控制技術(shù) 班 級(jí) : 學(xué)生姓名 : 指導(dǎo)教師 : 二零一零年五月 第 2 頁 共 21 頁 目 錄 摘要 ........................................................................................................................................................................................... 3 1 設(shè)計(jì)的作用、目的 ???????????????????????? 3 2 設(shè)計(jì)的具體實(shí)現(xiàn) ………… …… ……… …… …… …… …… …… ……… …… … .3 系統(tǒng)概述 ?????????????????????????? .3 單元電路設(shè)計(jì)與分析 ????????????????????? 4 電路的安裝與調(diào)試 ?????????????????????? 7 3 心得體會(huì)及建議 ????????????????????????? 8 心得體會(huì) ???????????????????????? ?? 8 建議 ???????????????????????????? 8 4 附錄 ?????????????????????????????? 9 5 參考文獻(xiàn) ???????????????????????????? 18 第 3 頁 共 21 頁 摘 要 跑馬燈，顧名思義，就是 “ 會(huì)像馬兒一樣跑動(dòng) ” 的小燈，故取名 “ 跑馬燈 ” 。 LED 陣列如圖三： 圖三 LED 顯示陣列 4. 模式顯示部分：模式即跑馬的方式，共 十種。 程序流程圖如圖五： 第 7 頁 共 21 頁 圖五 程序流程圖 電路的安裝與調(diào)試 用 keil 將程序編寫好之后，檢查程序有無錯(cuò) 誤。 } 第 10 頁 共 21 頁 unsigned char code LEDDisplayCode[] = { 0xC0,0xF9,0xA4,0xB0,0x99,0x92,0x82,0xF8, //0~7 0x80,0x90,0x88,0x83,0xC6,0xA1,0x86,0x8E,0xFF}。 KeyTemp = P2amp。 //定時(shí)器 2 啟動(dòng) EA=1。 P0 = 0xFF。 else LEDShow(~(0x8000LEDIndex))。 if(LEDIndex==15) LEDDirection = !LEDDirection。 } } void Timer2(void) interrupt 5 using 3 { TF2 = 0。 } else { LEDFlash(6)。 case 0x02: MusicAddress = amp。 InitialSound()。s 21 win. Michel Platini, president of European football39。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。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 jump When 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 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。s antiracism taskforce, is in London for the Football Association39。 } void PlayMusic(void) { Delay1ms(200)。 //揮著翅膀的女孩 break。 } if(Keyamp。 } else if(RunMode ==0x05) { Mode_5()。 if(LEDIndex==15) LEDDirection = !LEDDirection。 else LEDShow(0x8000LEDIndex)。 P2 = 0xFF。 //16 Bit AutoReload Mode TH2 = RCAP2H = 0xFC。 CheckValue = P2amp。icount。即在主程序中設(shè)定兩個(gè)標(biāo)志位，一個(gè)跑馬模式標(biāo)志位，一個(gè)跑馬速度標(biāo)志位。 2. AT89S52 性能簡介 AT89S52 具有如下特點(diǎn)： 40 個(gè)引腳， 4k Bytes Flash 片內(nèi)程序存儲(chǔ)器， 128 bytes 的隨機(jī)存取數(shù)據(jù)存儲(chǔ)器（ RAM）， 32個(gè)外部雙向輸入 /輸出（ I/O）口， 5個(gè)中斷優(yōu)先級(jí) 2 層中斷嵌套中斷， 2個(gè) 16 位可編程定時(shí)計(jì)數(shù)器 ,2 個(gè)全雙工串行通信口，看門狗（ WDT）電路，片內(nèi)時(shí)鐘振蕩器。此外，跑馬燈在單片機(jī)的調(diào)試過程中也非常有用，可以在不同時(shí)候?qū)⑿枰募拇嫫骰蜿P(guān)鍵變量的值顯示在跑馬燈上，提供需要的調(diào)試信息。不論 K1 被按下多少次， LED 九種點(diǎn)亮模式是循環(huán)的， K K3 鍵控制速度分別有 上限和下限，多按無效。知道了怎么用 keil 新建工程文件、編寫調(diào)試程序、生成． HEX 文件；怎么用 protues 軟件畫圖，特別是總線的畫法，怎么仿真等。 iCount。 if(!(CheckValueamp。 P0 = ~((LEDStatus8)amp。 } //Mode 0 unsigned int LEDIndex = 0。 } else { if(LEDFlag) L