【正文】 PWM=0。 display (num) 。 DisplayTemperature(ReadTemperature())。 yanshi1(5)。 } if ((k=num+2*wenducha)amp。amp。(knum+3*wenducha) ) { PWM=1。 //開啟三檔風(fēng) dang=3。 display (num) 。 display (num) 。 DisplayTemperature(ReadTemperature())。 yanshi1(5)。 PWM=0。 // DisplayTemperature(ReadTemperature())。 yanshi1(5)。 } if ((k=num+3*wenducha)amp。amp。(k=num+4*wenducha) ) { PWM=1。 //開啟四檔風(fēng) dang=4。 display (num) 。 DisplayTemperature(ReadTemperature())。 display (num) 。 DisplayTemperature(ReadTemperature())。 PWM=0。 // yanshi1(10)。 } if ((knum+4*wenducha)amp。amp。(k=num+5*wenducha) ) { PWM=1。 //開啟五檔風(fēng) dang=5。display (num) 。 DisplayTemperature(ReadTemperature())。 display (num) 。 DisplayTemperature(ReadTemperature())。 yanshi1(9)。PWM=0。 // yanshi1(1)。 } if ((knum+5*wenducha) ) { PWM=1。 //開啟五檔風(fēng) ,一直為五檔風(fēng)速 dang=5。 display (num) 。 DisplayTemperature(ReadTemperature())。 display (num) 。 DisplayTemperature(ReadTemperature())。 yanshi1(9)。 PWM=0。 // yanshi1(1)。 } else{ display (num) 。 dang=0。 DisplayTemperature(ReadTemperature())。 PWM=0。 } }//*********主程序*************main(){ num=20。 while(1){ //單片機(jī)讀取DS18B20的溫度后，數(shù)碼管顯示溫度 kscanf( )。 madachengxu()。 } }54 山東科技大學(xué)學(xué)士學(xué)位論文 附錄4：中英文資料翻譯附錄4：中英文資料翻譯AT89C52 Singlechip microprocessor introductionSelection of Singlechip microprocessor1. Development of Singlechip microprocessorThe main ponent part of Singlechip microprocessor as a result of by such centralize to be living to obtain on the chip，In immediate future middle processor CPU。Storage RAM immediately﹑memory read ROM﹑Interrupt system、Timer /39。s counter along with I/O39。s rim electric circuit awaits the main microputer section，The lumping is living on the chip。Although the Singlechip microprocessor is only a chip，Yet through makes up and the service be able to on sees，It has the calculating machine system property，calling it for this reason act as Singlechip microprocessor minimize calculating machine SCMS and abbreviate the Singlechip microprocessor。1976 Year the Inter corporation put out 8 MCS－48Set Singlechip microprocessor puter，After being living more than 20 years time in development that obtain continuously and wideranging application。1980Year that corporation put out high performance MCS －51Set Singlechip microprocessor。This type of Singlechip microprocessor ‘s service capacity、The addressing range wholly than early phase lift somewhat，Use also paratively far more at the moment。1982Year that corporation put out the taller 16 Singlechip microprocessor MCS of performance once more －96Set。The Singlechip microprocessor puter development has the performance more and more to be improved﹑More and more are distinguishing feature of strain。2. Adopt the Singlechip microprocessor strong point Hacker use，agility of application。l Have memory、Calculation and lookup service capacity。May make the apparatus bearing that the rule can not make。l The mand system is fit for the realtime control。l Bulk is little，Execution speed is quickly。l Dependability is high，The antiinterference ability is powerful。l The temperature use limit is vast。l Poweroff protection is improved。l The product development cycle brief。l Identical set is much as the necessary interface chip sort，The service be able to be pletely，Be convenient for to pick up achieve the minimal system。l On the basis of the tall science and technology demand，Integration in mon use software，Hardware （In case PL/M language，DAM39。s wave pattern producer，Analog switch awaits ）Application is agile。Hence，Native is designed adopting with the Singlechip microprocessor core ponents designs。3 . AT89C52 Component AT89C52 microprocessor main function parameter：And pletely patible with the MCS51 product instruction and the pinThe 8K byte is programmable/scratches writes Flash to dodge the fast memory1,000 time scratches writes the cycleEntire static operation: 0Hz 24MHzThree levels of encryptions program memory2568 byte interior RAM32 programmable I/O lines3 16 fixed time/counters8 interrupt sourcesProgrammable serial UART channelThe low power loss is idle and falls the electricity patternCPU39。s position The CPU is the Singlechip microprocessor core ponents，It consists of that ruing the arithmetic sum controller await。 1. Arithmetic unit The service of arithmetic unit be able to be carrying on arithmetic operation and logic operation，The halfbyte may be adjust﹑The separate word length and so on the data manipulate。 2. Order counter PC It is used for leaving second order which will the be carried out address。The address that the order points out in accordance PC brings out through the storage afterwards，The PC be able to plus 1 voluntarily，In immediate future point to the second order。 3. Order product register Leave the instruction code in the order register。When CPU39。s execute instruction，Send into the order register through reading aloud the instruction code get in the order storage，Decipher queen after the decipherer，Issue the relevant control signal through fixed time against the control circuit。Complete the order service capacity.Storage 1. Order storage Used to leave order and form constant。As to 8751，EA＝1Hour，Slice internal procedure storage is occupied 0000H ～0When FFFH，Order storage fetch piece through the slice. 2. Data storage utensil 8751No matter the Singlechip microprocessor data storage utensil is living on the physics and the logic goes up wholly being divided into two address space，One act as the internal data storage，Call on the internal data storage in the way of order of MOV39。s，Another act as the external data storage utensi