freepeople性欧美熟妇, 色戒完整版无删减158分钟hd, 无码精品国产vα在线观看DVD, 丰满少妇伦精品无码专区在线观看,艾栗栗与纹身男宾馆3p50分钟,国产AV片在线观看,黑人与美女高潮,18岁女RAPPERDISSSUBS,国产手机在机看影片

正文內(nèi)容

出租車計(jì)費(fèi)系統(tǒng)分析與設(shè)計(jì)at89c51畢業(yè)論文(文件)

 

【正文】 以上,而且采用8腳的DIP 封裝,使用方便。AT24C02有一個(gè)16字節(jié)頁(yè)寫(xiě)緩沖器。通過(guò)分時(shí)輪流控制各個(gè)數(shù)碼管的COM端,使各個(gè)數(shù)碼管輪流受控顯示。公共端1控制左面的數(shù)碼管,公共端6控制右面的數(shù)碼管。位碼與段碼一樣和硬件連接有關(guān)。本實(shí)驗(yàn)電路中采用灌電流方式(用共陽(yáng)數(shù)碼管)。 //定義標(biāo)量初值為零float y。 //定義兩個(gè)無(wú)符號(hào)的全局變量float s。 //DS1302的復(fù)位信號(hào)define delay_time 60 //宏定義時(shí)間為60ussbit SCL=P3^6。 //日期設(shè)置開(kāi)關(guān)sbit s3=P2^2。 Write_One_Byte(0x20,0xb0)。 //上電保護(hù) num++。 //另一個(gè)計(jì)數(shù)器計(jì)數(shù) if(count_price =4) //不足40個(gè)脈沖 { s=s+。 //金額為里程減2公里乘單價(jià)加默認(rèn)價(jià)加等待金額 } } //********************************************************main( ) /* 主函數(shù) */{ uchar key。 while(1) { key=scankey( )。 } if(key==7) { EX0=1。 DP_DIS( )。 delay2(5)。 delay2(1)。 while(1) { ET1=0。 } } else { ds1302_read_time( )。 EX0=0。 } }}結(jié) 論經(jīng)過(guò)這段時(shí)間的努力,終于按照畢業(yè)設(shè)計(jì)進(jìn)度要求如期完成了論文,《出租車計(jì)費(fèi)系統(tǒng)分析與設(shè)計(jì)》中要求的一般功能,如計(jì)費(fèi),等待計(jì)時(shí),里程計(jì)算,以及費(fèi)用,時(shí)間和里程的顯示功能。對(duì)單片機(jī)的工作原來(lái)有了更多的認(rèn)識(shí),熟悉了應(yīng)變片各芯片的工作原理和其功能運(yùn)用,軟件Proteus的學(xué)習(xí)與應(yīng)用。同時(shí)還要求其具有車票資料打印、IC卡付費(fèi)、語(yǔ)音報(bào)話、和電腦串行通信等功能。在此謹(jǐn)向潘老師致以衷心的感謝和深深的敬意!至此,在這里再一次誠(chéng)摯的感謝潘顯兵老師和在大學(xué)期間對(duì)我們諄諄教導(dǎo)的老師和領(lǐng)導(dǎo)們。參考文獻(xiàn)[1] 李華.MCS51系列單片機(jī)實(shí)用接口技術(shù)[M].北京:北京航空航天大學(xué)出版社,1993.[2] 張毅剛.單片機(jī)原理及應(yīng)用.第一版.高等教育出版社,2008.[3] 代啟化.《基于Proteus的電路設(shè)計(jì)與仿真》.現(xiàn)代電子技術(shù).2006,第 19 期.[4] 侯國(guó)章.測(cè)試與傳感技術(shù)[M].哈爾濱:哈爾濱工業(yè)大學(xué)出版社,2000.[5] 張志良.單片機(jī)原理與控制技術(shù)[M].北京:機(jī)械工業(yè)出版社,2002.[6] 劉文秀.單片機(jī)應(yīng)用系統(tǒng)仿真的研究[J].現(xiàn)代電子技術(shù).2005,第 286 期.[8] 曲新貴.電子元件材料手冊(cè)[M].北京:電子工業(yè)出版社,1989.[9] Rahman,Choudhury,..DeadTime Compensated Pulsewidth Modulator for a 3Phase VSI Implemented with an AT89C52 Microcontroller[C].Electrical and Computer Engineering,2006 International Conference on;Dhaka,Bangladesh,2006.[10] Temperature monitoring system based on AT89C51 microcontroller[C].2009 IEEE International Symposium on IT in Medicine amp。s to raise a few hundred times. At present, the highend 32bit singlechip frequency over 300MHz, the performance of the mid9039。 The sensor belongs to the object of study and the observation and control system connection installment, all scientific research and the production process must gain the information, all must transform through it for easy to transmit and the processing electrical the sensor status and the function is extremely important.Sensor function quite Yu Ren five system automatic routine, the intellectualized degree are higher, the system the level of dependency is bigger to the sensor, the sensor plays the decisive role to the system , domestic and foreign all lists as the sensor technology the most advanced technique. The sensor application sensor application domain involves the machine manufacture, the mercial run control, the automobile electronic products, the correspondence electronic products, the expense electronic products and the special purpose equipment and so on.(1) special purpose equipmentThe special purpose equipment mainly includes d。s each production activity and scientific experiment, in order to understand with the grasping entire process progress and the final output, needs frequently carries on the inspection and the survey to each kind of basic parameter or the physical quantity, thus obtains the essential information, and by it achievement analysis judgment and policymaking examination technology and the sensor are people in order to was measured the object contains the information carries on a series of technical measure which the qualitative understanding and quota grasping adopts.The modern of science and technology fast development causes the human society to enter the information age, mainly will depend upon in the information age people39。s 8031, because the performance of a simple and reliable access to a lot of good praise. Since then in 8031 to develop a singlechip microputer system MCS51 series. Based on singlechip microputer system of the system is still widely used until now. As the field of industrial control requirements increase in the beginning of a 16bit singlechip, but not ideal because the price has not been very widely used. After the 9039。和他們?cè)谝黄鸲冗^(guò)的日子永遠(yuǎn)值得回味。致 謝本設(shè)計(jì)是在指導(dǎo)老師潘顯兵副教授的悉心指導(dǎo)和講解下完成的,潘老師在教學(xué)上嚴(yán)格要求,及時(shí)向我們指出論文中的不足和缺陷并細(xì)心知道,老師的教誨和鼓勵(lì),及在教學(xué)上一絲不茍的精神,讓我們?nèi)M人受益匪淺,從課題的選擇到項(xiàng)目的最終完成,潘顯兵等老師都始終給予我細(xì)心的指導(dǎo)和不懈的支持。系統(tǒng)設(shè)計(jì)不夠優(yōu)化,有待改善,這些都為我今后的學(xué)習(xí)和工作留下了積極的影響。在這過(guò)程中,熟悉AT89C51單片機(jī)功能及工作特性,掌握其接口擴(kuò)展方法。 y1=0。 } if(key==4) { ET1=1。 if(s1==0||s4==0) break。 EX0=0。 break。 switch(key) { case 5: EX0=1。 flag=1。 Y=。 key=scankey( )。 //金額為默認(rèn)價(jià)與等待金額之和 } else //否則大于40個(gè)脈沖 { s=s+。 //邊沿觸發(fā)方式 if(num==10 ) //判斷是否有10個(gè)脈沖 { num=0。 _nop_( )。//********************************************************void EX_INT0(void) interrupt 0 //外部中斷0函數(shù){ static uchar num。 //24c02的數(shù)據(jù)線sbit s2=P2^1。 //DS1302的時(shí)鐘控制線sbit DAT=P3^6。float count_price=0。 //定義一個(gè)無(wú)符號(hào)的字符型的簡(jiǎn)寫(xiě)code uchar tab[ ]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90}。一般I/O 的灌電流負(fù)載能力遠(yuǎn)大于拉電流負(fù)載能力,對(duì)于一般的51單片機(jī)而言,拉電流最大4mA,灌電流為20mA。 數(shù)碼管對(duì)應(yīng)七段顯示表對(duì)應(yīng)數(shù)據(jù)線D7D6D5D4D3D2D1D0對(duì)應(yīng)顯示段efDPgcdba顯示數(shù)字段碼00CFH11001111103H0000001125DH0101110135BH01011011493H1001001150DAH1101101060DEH11011110743H0100001180DFH1101111190DBH11011011●位碼位碼也叫位選,用于選中某一位數(shù)碼管?!穸未a數(shù)碼管中的每一段相當(dāng)于一個(gè)發(fā)光二極管,8段數(shù)碼管則具有8個(gè)發(fā)光二極管。 掉電存儲(chǔ)電路原理圖圖中RR10 是上拉電阻,其作用是減少AT24C02的靜態(tài)功耗,由于AT24C02的數(shù)據(jù)線和地址線是復(fù)用的,采用串口的方式傳送數(shù)據(jù),所以只用兩根線SCL(移位脈沖)和SDA(數(shù)據(jù)/地址)與單片機(jī)傳送數(shù)據(jù)。 ISD1420操作模式表地址有效(高有效)功能典型應(yīng)用可以同時(shí)使
點(diǎn)擊復(fù)制文檔內(nèi)容
畢業(yè)設(shè)計(jì)相關(guān)推薦
文庫(kù)吧 www.dybbs8.com
備案圖鄂ICP備17016276號(hào)-1