【正文】 ll be traveling fast, so despite the distance, it will not be like 畢業(yè)設(shè)計(jì)用紙 共 頁(yè) 第 頁(yè) 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。 Have declared the end of the encounter that haven39。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(shuō)，是自以為是的精神寄托罷了。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。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。 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。 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。s 21 win. Michel Platini, president of European football39。s antiracism taskforce, is in London for the Football Association39。t agree with the disciplinary action your employer has taken against you ? 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。 在此感謝老師們的指導(dǎo)和幫助，感謝老師們傳授給我的知識(shí)，指導(dǎo)老師的嚴(yán)謹(jǐn)和求實(shí)的治學(xué)精神 及踏實(shí)細(xì)致的科研態(tài)度使我受益非淺。 21 世紀(jì)是科技快速發(fā)展的時(shí)期，更是電子產(chǎn)品飛書速更新的時(shí)期，對(duì)于我們，是個(gè)機(jī)遇。 DB 0c0h ,0f9h ,0a4h ,0b0h ,99h ,92h ,82h ,0f8h ,80h ,90h ,0FFH。 RET DISPLAY: 。進(jìn)行下一列的掃描。 MOV A , 0BH LKP: ADD A , R4 。 MOV A , 04H AJMP LKP LTWO: JB , LTHREE 。 LK4: MOV A , R2 MOV PTKEY , A MOV A , PTKEY JB , LONE 。 AJMP KEY1 LK2: MOV R2 , 0FEH 。有按鍵延時(shí) 12MS ACALL DISPLAY ACALL KS1 。初始化數(shù)碼管滅 MOV DIS_GE , 0AH LCALL DISPLAY MAIN: LCALL KEY1 MOV A , R3 MOV B , 10 DIV AB MOV DIS_SHI , A MOV DIS_GE , B LCALL DISPLAY SJMP MAIN 畢業(yè)設(shè)計(jì)用紙 共 頁(yè) 第 頁(yè) KEY1: LCALL KS1 。 PTKEY EQU P0 。 第 三 章 程序設(shè)計(jì) 程序流程圖 畢業(yè)設(shè)計(jì)用紙 共 頁(yè) 第 頁(yè) 圖 6 公交車語(yǔ)音報(bào)站系統(tǒng)程序流程 源程序清單 。列線電平為低，則行線電平為低；列線電平為高，則行線電平為高。矩陣式鍵盤適用于按鍵數(shù)量較多的場(chǎng)合，由行線和列線組成，按鍵位于行列的交叉點(diǎn)上。使用時(shí)公共陰極接低電平（ 51 單 片機(jī)系統(tǒng)中通常接地）。 （ 3） LED 顯示器中的發(fā)光二極管共有兩種連接方法： ? 共陽(yáng)極接法 把發(fā)光二極管的陽(yáng)極連在一起構(gòu)成公共陽(yáng)極。 畢業(yè)設(shè)計(jì)用紙 共 頁(yè) 第 頁(yè) 圖 4 LED 數(shù)碼管 腳圖 （ 2） LED 數(shù)碼管動(dòng)態(tài)顯示原理 LED 數(shù)碼管的顯示主要分為靜態(tài)和動(dòng)態(tài)顯示兩種方式，靜態(tài)顯示方式下，一個(gè)八位端口只能驅(qū)動(dòng)一個(gè)數(shù)碼管，如要驅(qū)動(dòng)四個(gè)數(shù)碼管將占用四個(gè)端口共 32 位，而單片機(jī)的端口是非常有限的，因此對(duì)于要求有多個(gè)數(shù)碼管顯示的單片機(jī)系統(tǒng)往往采用動(dòng)態(tài)顯示的方法。 SPI 協(xié)議是一個(gè)同步串行數(shù)據(jù)傳輸協(xié)議 ,協(xié)議假定微控制ISD4004 畢業(yè)設(shè)計(jì)用紙 共 頁(yè) 第 頁(yè) 器的 SPI 移位寄存器在 SCLK 的下降沿動(dòng)作 ,因此對(duì) ISD4003 而言 ,在時(shí)鐘止升沿鎖存 MOSI引腳的數(shù)據(jù) ,在下降沿將數(shù)據(jù)送至 MISO 引腳。在不外接地時(shí)鐘時(shí) ,此端必須接地。工業(yè)級(jí)芯片在整個(gè)溫度和電壓范圍內(nèi) ,頻率變化在 6/+4%內(nèi) ,此時(shí)建議使用穩(wěn)壓電源。該端可用于存儲(chǔ)管理技術(shù)。 OVF 標(biāo)志 指示 ISD 的錄、放操作已到達(dá)存儲(chǔ)器的未尾。 中斷 (/INT) 本端為漏極開路輸出。 串行輸出 (MISO) ISD 的串行輸出端。信號(hào)通過(guò)耦合電容輸入 ,最大幅度為峰峰值