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virtual

virtual是定義C++中虛函數的關鍵字。在面向對象程序設計領域，C++、ObjectPascal等語言中有虛函數（英語：virtualfunction）或虛方法（英語：virtualmethod）的概念。這種函數或方法可以被子類繼承和覆蓋，通常使用動態(tài)調度實現。這一概念是面向對象程序設計中（運行時）多態(tài)的重要組成部分。簡言之，虛函數可以給出目標函數的定義，但該目標的具體指向在編譯期可能無法確定。

virtual Serial Port Driver 6.9(虛擬串口)

虛擬串口軟件

標簽： virtual Serial Driver Port

上傳時間： 2013-10-27

上傳用戶：1234321@q
virtual Serial Port Driver 6.9(虛擬串口)

虛擬串口軟件

標簽： virtual Serial Driver Port

上傳時間： 2013-10-23

上傳用戶：JIUSHICHEN
基于MASON公式的多功能二階通用濾波器設計

基于通用集成運算放大器，利用MASON公式設計了一個多功能二階通用濾波器，能同時或分別實現低通、高通和帶通濾波，也能設計成一個正交振蕩器。電路的極點頻率和品質因數能夠獨立、精確地調節(jié)。電路使用4個集成運放、2個電容和11個電阻，所有集成運放的反相端虛地。利用計算機仿真電路的通用濾波功能、極點頻率和品質因數的獨立控制和正交正弦振蕩，從而證明該濾波器正確有效。 Abstract: A new multifunctional second-order filter based on OPs was presented by MASON formula. Functions， such as high-pass， band-pass， low-pass filtering， can be realized respectively and simultaneously， and can become a quadrature oscillator by modifying resistance ratio. Its pole angular frequency and quality factor can be tuned accurately and independently. The circuit presented contains four OPs， two capacitors， and eleven resistances， and inverting input of all OPs is virtual ground. Its general filtering， the independent control of pole frequency and quality factor and quadrature sinusoidal oscillation were simulated by computer， and the result shows that the presented circuit is valid and effective.

標簽： MASON 多功能二階濾波器設計

上傳時間： 2013-10-09

上傳用戶：13788529953
計算機虛擬儀器圖形編程LabVIEW教材-經典眾多文檔

LabVIEW是實驗室虛擬儀器集成環(huán)境（Laboratory virtual Instrument Engineering Workbench）的簡稱，是美國國家儀器公司（NATIONAL INSTRUMENTS，簡稱NI）的創(chuàng)新軟件產品，也是目前應用最廣、發(fā)展最快、功能最強的圖形化軟件集成開發(fā)環(huán)境。 LabVIEW是一種圖形化編程語言，又稱G語言。其編寫的程序稱為虛擬儀器VI（virtual Instrument），以.VI后綴。

標簽： LabVIEW 計算機虛擬儀器圖形編程

上傳時間： 2013-10-29

上傳用戶：fairy0212
This little program shows how to use COM technology in Win32Asm. When it s run it lets the user fr

This little program shows how to use COM technology in Win32Asm. When it s run it lets the user freely decide about the presence of the program with the WS_EX_TOOLWINDOW style on the taskbar. The main goal is to show the easiest possible example instead of killing people with the details about virtual tables, polymorphism, inheritance and using nested macros etc., etc.

標簽： technology program little shows

上傳時間： 2015-05-03

上傳用戶：kernaling
Java 3D 是 Sun 公司開發(fā)的用于客戶端 3D 圖形應用編程的一套接口(API)

Java 3D 是 Sun 公司開發(fā)的用于客戶端 3D 圖形應用編程的一套接口(API)，無論是游戲開發(fā)、科學計算，還是MCAD、生物技術，還是虛擬現實（virtual Reality）、仿真技術，Java 3D都是很優(yōu)秀的選擇。本書共分18章，每一章都能自成一體，使你能集中精力解決相關的問題。

標簽： Java 3D API Sun

上傳時間： 2013-12-25

上傳用戶：wangzhen1990
Linux 虛擬網絡接口實例 In the Linux (or Unix) world, most network interfaces, such as eth0 and ppp0, are a

Linux 虛擬網絡接口實例 In the Linux (or Unix) world, most network interfaces, such as eth0 and ppp0, are associated with a physical device that is in charge of transmitting and receiving data packets. However, some logical network interfaces don t feature any physical packet transmission. The most well-known examples of these "virtual" interfaces are the shaper and eql interfaces.

標簽： Linux interfaces network world

上傳時間： 2014-01-11

上傳用戶：zhangzhenyu
This book focuses on combining C++ s power and flexibility with high performance and scalability, r

This book focuses on combining C++ s power and flexibility with high performance and scalability, resulting in the best of both worlds. Specific topics include temporary objects, memory management, templates, inheritance, virtual functions, inlining, referencecounting, STL, and much more

標簽： flexibility performance scalability and

上傳時間： 2015-07-02

上傳用戶：784533221
This guide provides an in-depth look at the construction and underlying theory of a fully functional

This guide provides an in-depth look at the construction and underlying theory of a fully functional virtual machine and an entire suite of related development tools.

標簽： construction functional underlying provides

上傳時間： 2014-01-05

上傳用戶：zm7516678
It can also accept a number of ftp connection (multithreaded), and with most of the commercial ftp s

It can also accept a number of ftp connection (multithreaded), and with most of the commercial ftp server functions. Server supports all basic ftp orders and to provide a simple user interface management, virtual directory support. This article comes from shrimp o

標簽： multithreaded connection commercial ftp

上傳時間： 2013-12-17

上傳用戶：拔絲土豆

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virtual

virtual Serial Port Driver 6.9(虛擬串口)

virtual Serial Port Driver 6.9(虛擬串口)

基于MASON公式的多功能二階通用濾波器設計

計算機虛擬儀器圖形編程LabVIEW教材-經典眾多文檔

This little program shows how to use COM technology in Win32Asm. When it s run it lets the user fr

Java 3D 是 Sun 公司開發(fā)的用于客戶端 3D 圖形應用編程的一套接口(API)

Linux 虛擬網絡接口實例 In the Linux (or Unix) world, most network interfaces, such as eth0 and ppp0, are a

This book focuses on combining C++ s power and flexibility with high performance and scalability, r

This guide provides an in-depth look at the construction and underlying theory of a fully functional

It can also accept a number of ftp connection (multithreaded), and with most of the commercial ftp s