第八章 labview的編程技巧 本章介紹局部變量、全局變量、屬性節點和其他一些有助于提高編程技巧的問題,恰當地運用這些技巧可以提高程序的質量。 8.1 局部變量 嚴格的語法盡管可以保證程序語言的嚴密性,但有時它也會帶來一些使用上的不便。在labview這樣的數據流式的語言中,將變量嚴格地分為控制器(Control)和指示器(Indicator),前者只能向外流出數據,后者只能接受流入的數據,反過來不行。在一般的代碼式語言中,情況不是這樣的。例如我們有變量a、b和c,只要需要我們可以將a的值賦給b,將b的值賦給c等等。前面所介紹的labview內容中,只有移位積存器即可輸入又可輸出。另外,一個變量在程序中可能要在多處用到,在圖形語言中勢必帶來過多連線,這也是一件煩人的事。還有其他需要,因此labview引入了局部變量。
上傳時間: 2013-10-27
上傳用戶:xieguodong1234
When I started writing the first edition of RF Power Amplifiers for Wireless Communications,some time back in 1997, it seemed that I was roaming a largely uninhabitedlandscape. For reasons still not clear to me there were few, if any, otherbooks dedicated to the subject of RF power amplifiers. Right at the same time, however,hundreds of engineers were being assigned projects to design PAs for wirelesscommunications products. It was not, therefore, especially difficult to be successfulwith a book that was fortuitously at the right place and the right time.
標簽: Communications Amplifiers Wireless Edition
上傳時間: 2013-11-12
上傳用戶:YYRR
ExpressPCB 是一款免費的PCB設計軟件,簡單實使??梢援嬰p層板。 Our Free PCB software is a snap to learn and use. For the first time, designing circuit boards is simple for the beginner and efficient for the professional. Our board manufacturing service makes top quality two and four layer PCBs. Use our MiniBoard service and pay only $51 for three boards (plus $8 shipping).
標簽: ExpressPCB PCB 設計軟件
上傳時間: 2013-11-15
上傳用戶:lchjng
ExpressPCB 是一款免費的PCB設計軟件,簡單實使??梢援嬰p層板。 Our Free PCB software is a snap to learn and use. For the first time, designing circuit boards is simple for the beginner and efficient for the professional. Our board manufacturing service makes top quality two and four layer PCBs. Use our MiniBoard service and pay only $51 for three boards (plus $8 shipping).
標簽: ExpressPCB PCB 設計軟件
上傳時間: 2013-10-09
上傳用戶:1047385479
SOPC嵌入式系統實驗教程(一)【作者:周立功;出版社:北京航空航天大學出版社】(因網上資料有限,所以本資料為周立功 SOPC嵌入式系統實驗教程(一)部分章節及實驗代碼,真心想學的可以買一本書看看。) 該書是與《SOPC嵌入式系統基礎教程》相配套的實驗教材。設計開發了 45個實驗,包括SOPC硬件系統的基礎實驗,基于Nios II外設的基礎編程實驗,基于實驗箱外設的Nios II高級編程實驗,在Nios II系統中進行基于μ C/OS-II操作系統的應用程序開發實驗和SOPC硬件系統的高級實驗。各種實驗的安排由淺人深,由硬件到軟件,相對完整,使讀者很容易學習和掌握SO PC嵌入式系統的開發應用。
上傳時間: 2013-11-01
上傳用戶:superman111
Introduction to Xilinx Packaging Electronic packages are interconnectable housings for semiconductor devices. The major functions of the electronic packages are to provide electrical interconnections between the IC and the board and to efficiently remove heat generated by the device. Feature sizes are constantly shrinking, resulting in increased number of transistors being packed into the device. Today's submicron technology is also enabling large-scale functional integration and system-on-a-chip solutions. In order to keep pace with these new advancements in silicon technologies, semiconductor packages have also evolved to provide improved device functionality and performance. Feature size at the device level is driving package feature sizes down to the design rules of the early transistors. To meet these demands, electronic packages must be flexible to address high pin counts, reduced pitch and form factor requirements. At the same time,packages must be reliable and cost effective.
上傳時間: 2013-11-21
上傳用戶:不懂夜的黑
介紹了基于Matlab/RTW(Real-time Workshop)和RTX(Real-time extension)構建實時仿真系統的方法;針對基于RTX的實時仿真系統不能直接進行在線調參的不足,提出了一種利用C API(C文件應用程序接口)實現在線調參的方法。經過實驗證明,此仿真系統不僅具有很強的實時性,并且擁有良好的人機交互能力;另外,在線調參功能的實現使仿真試驗的效率得到了大大的提高,而且還可以作為一種故障注入方法來考察模型的容錯能力,是基于RTX實時仿真系統的一大改良。
上傳時間: 2014-03-20
上傳用戶:lizhizheng88
Ebase實時數據庫系統(Ebase Real-time Database Management System,簡稱EBase實時數據庫)是上海谷益科技有限公司推出的具有自主知識產權的實時數據庫管理系統及套件產品。 實時數據庫系統理論在新領域的擴展,在電力、鋼鐵、化工、造紙領域有著廣闊的應用前景,可以為企業提供高速、實時數據服務,能夠對快速變化的數據進行長期保存,是工廠控制層與生產管理系統之間連接橋梁,同時也是先進控制,在線優化、故障診斷的數據平臺
上傳時間: 2013-10-08
上傳用戶:muhongqing
為了移植到MPC860,需要修改uC/OS-II中與處理器和編譯器相關的部分代碼
上傳時間: 2013-12-22
上傳用戶:wangzhen1990
提供了一些ADSP-217x或ADSP-218x DSP芯片的編程事例,運行在uC/OS-II平臺下。
上傳時間: 2015-03-13
上傳用戶:qwe1234