This is a good book to Begin with for Slackware Beginners.
標(biāo)簽: Slackware Beginners Begin This
上傳時(shí)間: 2017-03-11
上傳用戶(hù):wanghui2438
Begin visual c++ 2005.絕對(duì)讓你有所收獲……
上傳時(shí)間: 2014-01-16
上傳用戶(hù):zhuimenghuadie
procedure senddata var i:integer commflg : Boolean Begin commflg:=true for i:=1 to 8 do Begin if not fcomm comml writecommdata(sendbutter,i) then Begin Commflg=false break end end end (4) 接收數(shù)據(jù) 在編寫(xiě)基于串口的計(jì)算機(jī)工業(yè)測(cè)控時(shí),通常需要由下位機(jī)向PC機(jī)發(fā)送數(shù)據(jù)以使PC機(jī)了解系統(tǒng)的測(cè)試數(shù)據(jù)或下位機(jī)的運(yùn)行狀態(tài),并進(jìn)而控制下位機(jī)的行為。利用Spcomm串口控件接收下位機(jī)發(fā)送的數(shù)據(jù)信息的示例代碼如下: //事件驅(qū)動(dòng)方式接收數(shù)據(jù)程序 procedure TForm1.CommlReceiveData(Sender:Tobject Buffer:Pointer bufferLength:Word) var receivedata:array of byte Begin sleep(100) //等待100ms,保證接收到所有數(shù)據(jù) move(buffef ,receivedata,bufferlength) //將接收緩存區(qū)中的數(shù)據(jù)轉(zhuǎn)移到數(shù)組中 …… end (5) 關(guān)閉串口 在系統(tǒng)開(kāi)發(fā)中,應(yīng)注意在不使用串口時(shí)應(yīng)及時(shí)關(guān)閉串口,釋放系統(tǒng)資源,否則可能會(huì)影響系統(tǒng)的其它應(yīng)用。關(guān)閉串口的代碼如下: procedure TForm1.FormClose ( Sender TObj ect:var Action:TCIoseAction ) Begin comml.StopComm end
標(biāo)簽: commflg procedure senddata integer
上傳時(shí)間: 2014-01-26
上傳用戶(hù):懶龍1988
Begin visual c++ 2005 Begin visual c++ 2005
上傳時(shí)間: 2013-12-25
上傳用戶(hù):lx9076
A very useful tutorial to Begin assembly programming with atmel microcontrollers
標(biāo)簽: microcontrollers programming tutorial assembly
上傳時(shí)間: 2013-12-24
上傳用戶(hù):iswlkje
the guide of java Hibernate . if you want to Begin the study of Hibernate , it is useful for you .
標(biāo)簽: Hibernate the you useful
上傳時(shí)間: 2017-06-03
上傳用戶(hù):cxl274287265
Example Ajax can used to Begin program
標(biāo)簽: Example program Begin Ajax
上傳時(shí)間: 2014-01-01
上傳用戶(hù):sclyutian
TcpIp使用方法 在服務(wù)端運(yùn)行tcp.exe, 在另一臺(tái)與之在同一network的客戶(hù)端上運(yùn)行tcplnk.exe, 規(guī)定相同的port, 在服務(wù)端上Begin, 在客戶(hù)端上輸入服務(wù)器的IP地址,connect, 客戶(hù)端上編輯框中的字符便可send到客戶(hù)端的編輯框中。
上傳時(shí)間: 2013-04-24
上傳用戶(hù):asdfasdfd
Abstract: This tutorial discusses proper printed-circuit board (PCB) grounding for mixed-signal designs. Formost applications a simple method without cuts in the ground plane allows for successful PCB layouts withthis kind of IC. We Begin this document with the basics: where the current flows. Later, we describe how toplace components and route signal traces to minimize problems with crosstalk. Finally, we move on toconsider power supply-currents and end by discussing how to extend what we have learned to circuits withmultiple mixed-signal ICs.
標(biāo)簽: PCB 正 印刷電路板 混合信號(hào)
上傳時(shí)間: 2013-11-04
上傳用戶(hù):pol123
Designing Boards with Atmel AT89C51,AT89C52, AT89C1051, and AT89C2051 for Writing Flash at In-Circuit Test. Recent improvements in chips and testers have made it possible for the tester to Begin taking over the role tradi-tionally assigned to the PROM program-mer. Instead of having a PROM pro- grammer write nonvolatile memories before assembling the board, the in-cir- cuit tester writes them during in-circuit testing operations. Many Teradyne Z18- series testers are now in use loading code into nonvolatile memories, micro- controllers and in-circuit programmable logic devices. The purpose of this note is to explain how the Z18 approaches the writing task for Atmel AT89C series IC’s, so that designers of boards using these chips can get the best results.
上傳時(shí)間: 2013-11-17
上傳用戶(hù):xiaozhiqban
蟲(chóng)蟲(chóng)下載站版權(quán)所有 京ICP備2021023401號(hào)-1