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畢業(yè)論文-基于at89c52單片機的智能散熱器的設計-閱讀頁

2024-11-27 23:17本頁面
  

【正文】 機會 ,為我提供了良好的畢業(yè)設計場所和試驗條件 。李 老師嚴謹的治學態(tài)度和為人給了我們很大的教育,這將使我終身受益。 include define uchar unsigned char define uint unsigned int define jump_ROM 0xCC define start 0x44 define read_EEROM 0xBE sbit DQ = P1^6。 sbit wela=P2^7。 unsigned char CYCLE。//定義高電平時間 unsigned char TMPH,TMPL。 //void dianji(uchar pwm)。 for(i=0。 i++) 。 } * 名稱 : delay() * 功能 : 延時 ,延時時間大概為 140US。 for(i=0。 i++) for(j=0。 j++) 。 for(j=0。j++) for(x=0。x++)。 DQ = 0。 DQ = 1。 deceive_ready = DQ。 25 return(deceive_ready)。 DQ = 0。 for(i=0。 i++)。 } * 名稱 : write_bit() * 功能 : 向 DS18B20 寫一位 * 輸入 : bitval(要對 DS18B20 寫入的位值) * 輸出 : 無 void write_bit(uchar bitval) { DQ=0。 delay(5)。 } * 名稱 : read_byte() * 功能 : 從 DS18B20 讀一個字節(jié) * 輸入 : 無 uchar read_byte(void) 26 { uchar i,m,receive_data。 receive_data = 0。 i8。 } delay(6)。 } * 名稱 : write_byte() * 功能 : 向 DS18B20 寫一個字節(jié) * 輸入 : val(要對 DS18B20 寫入的命令值) * 輸出 : 無 void write_byte(uchar val) { uchar i,temp。 i8。 temp = temp amp。 write_bit(temp)。 } } /* 定時中斷 */ 27 void tim(void) interrupt 3 using 1 { static unsigned char count。 TL0=(655361000)%256。 //燈滅 } count++。 if(PWM_ON!=0) //如果左右時間是 0 保持原來狀態(tài) PWM = 0。 //1602 使能引腳 sbit RW=P2^6。 //1602 數據 /命令選擇引腳 void delay_3() { int i,j。 i100。 j20。 } * 名稱 : enable(uchar del) 28 * 功能 : 1602 命令函數 * 輸入 : 輸入的命令值 * 輸出 : 無 void enable(uchar del) { P0 = del。 RW = 0。 delay_3()。 delay_3()。 RS = 1。 E = 0。 E = 1。 } * 名稱 : L1602_init() * 輸入 : 無 29 * 輸出 : 無 void L1602_init(void) { enable(0x01)。//0010 0110 顯示模式設置 enable(0x0c)。//0000 0110 顯示光 標移動設置 enable(0xd0)。b39。 if(hang == 1) a = 0x80。 a = a + lie 1。 write(sign)。) 30 * 輸入 : 行,列,需要輸入 1602 的數據 * 輸出 : 無 void L1602_string(uchar hang,uchar lie,uchar *p) { uchar a。 if(hang == 2) a = 0xc0。 enable(a)。\039。 write(*p)。 } } * 名稱 : Main() * 輸入 : 無 * 輸出 : 無 void main() { uint temp0=0。 //uchar PWM_Num。//定時器設置 1ms in 12M crystal TH0=(655361000)/256。//定時 1mS IE= 0x82。// 時間可以調整 這個是 10 步調整 周期 10ms 8 位 PWM 就 31 是 256 步 L1602_init()。b39。 L1602_string(1,2, wendu )。 while(1) { TR0=0。 write_byte(jump_ROM)。 Reset()。 write_byte(read_EEROM)。 TMPH = read_byte()。 TR0=1。 delay(50000)。 L1602_char(1, 11, temp%10 + 48)。amp。 } if(temp=33) { PWM_ON=0。 } } 您好,為你提供優(yōu)秀的畢業(yè)論文參考資料,請您刪除以下內容, O(∩_∩)O謝謝?。?!A national survey was recently launched to evaluate the eye health of Chinese children andteen June 6, China39。s digitized society, will also be attached on the report.Myopia is not only a disease that makes people see things blurrily, but also leads to severeplications, such as glaua (increased pressure within the eyeball), and can causeblindness, said Zhou Yuehua, an established eye care specialist with Beijing TongrenHospital.It is very important for parents and children to know about the risk and care for their eyes.There are about 450 million myopia patients in China. Among Chinese myopia patients,30million are severe patients, according to ZhouThe prevalence of myopia among high school and college students is more than 70 percent,and the situation is continuously worsening, he Zhu, director with the China Youth Development Service Center, said long hours ofstudy, lack of exercise, especially outdoor activities, and attachment to electronic screen aresome of the top reasons behind the widespread myopia problems, and the increase ofyounger patients, although China has made great progress in improving the hardwarefacilities and lighting conditions in said he hopes the survey will alert people on the threatening situation, and also helpmedical experts to better guideline parents and children39。s work can be a way to unwind. It is true for He Wenjun, whose workplace is right near the forest park. She discovered her athletic aptitude at the age of seven, when she began playing tennis. Then she turned to jogging, and she has persevered with it for 10 years. I e to jog almost every day after work, whenever I have time. I think jogging is good for my health. And for me, a girl, it helps me to achieve to eternal goal, to keep slim, He said. He says she prefers jogging alone, so she can focus better. She loves jogging, even during Beijing39。ll hold off jogging for a while. But if I really want to get away from work, I39。s health. Poor technique harms the muscles and skeleton, and can cause secondary injures. And, jogging in a bad environment can cause circulation problems, said Lu Zhiyong, attending doctor, Sports Hospital, General Admin. of . Lu has some tips for joggers, and those who are thinking of taking it says people sh ould first evaluate their physical condition, to decide the amount and type of exercise, and jogging in the open air is better running on a treadmill. Conrad Macao will run special programs for the entire month of October this year to support the Hong Kong Cancer Fund39。t conducive to raising a child. She planned to have children once she had achieved career success so she could provide a stable environment for her baby. After 10 years, Xiao felt the time was right, and she tried to conceive for about six months, but was unable to bee pregnant. I conducted prehensive physical checkups. The results suggested that Xiao39。s suggestion that a special day be marked in the year for the global practice of the stressbusting regimen, which is already a multibillion dollar industry in the United States. Modi said in the speech: Yoga is an invaluable gift of India39。s Guangzhou city anized the Chengdu festival. A terrifying wooden bridge in China has just been replaced by a glas
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