【正文】 則表示曲子終了；若查表結(jié)果為 0x00，則產(chǎn)生相應(yīng)的停頓效果。 總體設(shè)計思想 單片機(jī) 原理及系統(tǒng)課程設(shè)計報告 3 AT89C51晶 振 復(fù) 位 電 路按 鍵 輸 入L E D 顯 示 燈蜂 鳴 器 圖 1 思路圖 如圖 1 所示 按鍵部分有三個鍵，分別結(jié)于外部中斷 ， ，及串行口 ， 每產(chǎn)生一次中斷 count1 加一，根據(jù) count1 的值來決定花樣燈的種類。 圖 3 硬件圖 4 軟件設(shè)計 根據(jù)設(shè)計要求及其原理繪制程序流程圖，如圖 4， ,根據(jù)流程圖 ， 在 Keil 中編寫程序，并不斷編譯 跟 調(diào)試，直至沒有任何錯誤 和 警告。 6 總結(jié) 上 學(xué)期 通過對《單片機(jī) 原理及應(yīng)用系統(tǒng)設(shè)計 》的學(xué)習(xí)，使我對 單片機(jī)的硬件 結(jié)構(gòu)，指令系統(tǒng)，以及系統(tǒng)設(shè)計有了一定的認(rèn)識，在這基礎(chǔ)之上進(jìn)行單片機(jī)設(shè)計，可以說是輕松了不少 ， 然而在 實(shí)際 設(shè)計的過程 中 依然暴露出許多問題。//按 key2 可切換歌曲 sbit key3=P3^1。 //花樣燈 5 uchar code huayang6[]={0x55,0xaa,0xcc,0x33,0x99,0x66,0x0f,0xf0}。 uchar code kdqg[]={//康定情歌 0x64,0x84,0x92,0x91,0x81,0x93,0x61,0x54,0x62, 0x82,0x92,0x91,0x81,0x92,0x64,0x62,0x82,0x92,0x91,0x81,0x93,0x61, 0x54,0x82,0x62,0x51,0x61,0x51,0x41,0x52,0x24,0x92,0x54,0x82,0x64,0x52, 0x42,0x94,0x82,0x62,0x51,0x61,0x51,0x41,0x52,0x24, 0xff }。 //延時 165MS,即十六分音符 void song()。//外部中斷 0 下降沿觸發(fā)方式 EX1=1。x++) { if(key3==1) {P1=0xff。 case 2: for(x=0。 if(count1!=2) break。 beep()。 break。x++) { if(key3==1) {P1=0xff。 case 6: for(x=0。 if(count1!=6) break。 count1++。//從頭開始唱 count2++。i50。y0。 } void song() { uint temp。 if(count2==2) //count2==2 選擇寂寞沙洲冷 temp=jmszl[i]。 timel=chuzhi[jp*2+1]。 i++。s antiracism taskforce, is in London for the Football Association39。 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。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。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，是自以為是的精神寄托罷了。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 單片機(jī) 原理及系統(tǒng)課程設(shè)計報告 20 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。 Have declared the end of the encounter that haven39。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 單片機(jī) 原理及系統(tǒng)課程設(shè)計報告 19 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. 一個人的時候，自己的想法總是特別地清晰。 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。s 21 win. Michel Platini, president of European football39。t agree with the disciplinary action your employer has taken against you 單片機(jī) 原理及系統(tǒng)課程設(shè)計報告 17 ? your employer dismisses you and you think that you have been dismissed unfairly. For more information about dismissal and unfair dismissal, see Dismissal. You can make a claim to an employment tribunal, even if you haven39。 //取數(shù)的低 4 位 TR0=0。 if(temp==0xff) //到 0xff 一首歌曲結(jié)束 break。 } if(key3==1) {P1=0xff。x0。 } void delay(uint z) //延時 165MS,即十六分音符 { uint x,y。 TL0=timel。//關(guān)總中斷 delay1(1)。 } } } void int0() interrupt 0 { EA=0。 break。 beep()。 if(count1!=4)