Visual Basic（簡(jiǎn)稱VB）是Microsoft公司開發(fā)的一種通用的基于對(duì)象的程序設(shè)計(jì)語言，為結(jié)構(gòu)化的、模塊化的、面向?qū)ο蟮摹瑓f(xié)助開發(fā)環(huán)境的事件驅(qū)動(dòng)為機(jī)制的可視化程序設(shè)計(jì)語言。是一種可用于微軟自家產(chǎn)品開發(fā)的語言。 [1] “Visual” 指的是開發(fā)圖形用戶界面 (GUI) 的方法——不需編寫大量代碼去描述界面元素的外觀和位置，而只要把預(yù)先建立的對(duì)象add到屏幕上的一點(diǎn)即可。 “Basic”指的是 BASIC (Beginners All-Purpose Symbolic Instruction Code) 語言，是一種在計(jì)算技術(shù)發(fā)展歷史上應(yīng)用得最為廣泛的語言。
標(biāo)簽： VB精選
上傳時(shí)間： 2019-03-06
上傳用戶：Yingshangling
在包 hugeinteger 中創(chuàng)建功能類 HugeInteger，該類用來存放和操作一個(gè)不超過 40 位的大整數(shù)。 (1) 定義一個(gè)構(gòu)造函數(shù)，用來對(duì)大整數(shù)進(jìn)行初始化。參數(shù)為一個(gè)字符串。 (2) 定義 input 成員函數(shù)，實(shí)現(xiàn)大整數(shù)的重新賦值。參數(shù)為一個(gè)字符串，無返回 值。 (3) 定義 output 成員函數(shù)，將大整數(shù)輸出到屏幕上。無參數(shù)無返回值。 (4) 定義 add 成員函數(shù)，實(shí)現(xiàn)兩個(gè)大整數(shù)的加法。參數(shù)為一個(gè) HugeInteger 對(duì) 象，無返回值，例如： HugeInteger A = new HugeInteger("12345"); HugeInteger B = new HugeInteger("1234"); A.add(B); 此時(shí)，A 為 13579，B 為 1234。 (5) 定義 sub 成員函數(shù)，實(shí)現(xiàn)兩個(gè)大整數(shù)的減法。參數(shù)和返回值同 add 函數(shù)。 (6) 定義若干大整數(shù)關(guān)系運(yùn)算的成員函數(shù)，包括 isEqualTo（等于，=）、 isNotEqualTo（不等于，≠）、isGreaterThan（大于，>）、isLessThan（小 于，<）、isGreaterThanOrEqualTo（大于等于，≥）和 isLessThanOrEqualTo （小于等于，≤）。這些函數(shù)的參數(shù)為一個(gè) HugeInteger 對(duì)象，返回值為一個(gè) 布爾類型，表示關(guān)系運(yùn)算的結(jié)果，例如： HugeInteger A = new HugeInteger("12345"); HugeInteger B = new HugeInteger("1234"); 那么此時(shí) A.isGreaterThan(B)的結(jié)果應(yīng)當(dāng)為 True，表示 12345>1234。
標(biāo)簽： java 整數(shù) 運(yùn)算
上傳時(shí)間： 2019-06-01
上傳用戶：idealist
（S盒的線性逼近表） 設(shè)m,n∈N,從F2m INsα，β={x∈F2m:α?x=β?S(x)}， Nsα，β=?INsα，β。
標(biāo)簽： 線性逼近表
上傳時(shí)間： 2020-03-13
上傳用戶：ddhjx123
keil C51 v6.12 完全解密版的安裝說明 安裝方法是先將V6.12安裝程序復(fù)制到某個(gè)目錄下，如復(fù)制到D:\keilC51 然后執(zhí)行D:\keilC51\setup\setup.exe 安裝程序，選擇安裝Eval Version版進(jìn) 行安裝。 注冊(cè)碼：K199U-20071-12A9U 當(dāng)出現(xiàn)Please insert the add-on disk的提示畫面，可按next按鈕（不用 插入軟盤）。 安裝好之后就可以使用，沒有代碼大小的限制，這是完全版，比 Eval版增 加浮點(diǎn)庫等內(nèi)容。
上傳時(shí)間： 2020-03-20
上傳用戶：mimeme
At present, there is a strong worldwide push toward bringing fiber closer to indi- vidual homes and businesses. Fiber-to-the-Home/Business (FTTH/B) or close to it networks are poised to become the next major success story for optical fiber com- munications. In fact, FTTH connections are currently experiencing double-digit or even higher growth rates, e.g., in the United States the annual growth rate was 112% between September 2006 and September 2007, and their presence can add value of U.S. $4,000–15,000 to the selling price of a home.
標(biāo)簽： Technologies Broadband Networks Access
上傳時(shí)間： 2020-05-26
上傳用戶：shancjb
This book is intended for RF planners, to serve as a practical tool in their daily work designing indoor radio distribution systems. Based on feedback from readers of the first edition it was clear to me that I needed to add more material and in depth description of the basics of indoor systems based on using repeaters; this has grown into a new Section 4.7. There was also a strong demand to add more detail and dedicate a full chapter to radio planning in tunnels, for both rail and road tunnels; and redundancy principles in the design focus for solving the challenge of handover zones. An entire Chapter 11 is now dedicated to tunnel radio planning.
標(biāo)簽： Planning Indoor Radio
上傳時(shí)間： 2020-05-27
上傳用戶：shancjb
Developers, manufacturers and marketers of products incorporating short- range radio systems are experts in their fields—security, telemetry, medical care, to name a few. Often they add a wireless interface just to eliminate wires on an existing wired product. They may adapt a wireless subsystem, which is easy to integrate electrically into their system, only to find that the range is far short of what they expected, there are frequent false alarms, or it doesn’t work at all. It is for these adapters of wireless subsystems that this book is primarily intended.
標(biāo)簽： Communication Short-range Wireless
上傳時(shí)間： 2020-06-01
上傳用戶：shancjb
The mature CMOS fabrication processes are available in many IC foundries. It is cost-effective to leverage the existing CMOS fabrication technologies to implement MEMS devices. On the other hand, the MEMS devices could also add values to the IC industry as the Moore’s law reaching its limit. The CMOS MEMS could play a key role to bridge the gap between the CMOS and MEMS technologies. The CMOS MEMS also offers the advantage of monolithic integration of ICs and micro mechanical components.
標(biāo)簽： TECHNOLOGY CMOS MEMS KEY
上傳時(shí)間： 2020-06-06
上傳用戶：shancjb
【實(shí)例簡(jiǎn)介】 一、Delphi程序啟動(dòng)Word 采用CreateOleObjects的方法來啟動(dòng)Word，調(diào)用VBA代碼，具體實(shí)現(xiàn)過程為： 首先使用GetActiveOleObject('Word.Application')判斷當(dāng)前內(nèi)存中是否存在Word程序，如果存在，則直接連接，如果沒有Word程序，則使用CreateOleObject('Word.Application')啟動(dòng)Word 二、Delphi程序新建Word文稿 格式：WordDocuments.Add(Template,NewTemplate,DocumentType,Visible) Template： 使用模板的名稱， NewTemplate： 新建文檔的類型，True表示為模板，F(xiàn)alse表示為文檔 DocumentType： 文檔類型，默認(rèn)為空白文檔 Visible： 打撈的窗口是否可見
標(biāo)簽： deljosdfsd
上傳時(shí)間： 2021-01-12
上傳用戶：
This texts contemporary approach focuses on the concepts of linear control systems, rather than computational mechanics. Straightforward coverage includes an integrated treatment of both classical and modern control system methods. The text emphasizes design with discussions of problem formulation, design criteria, physical constraints, several design methods, and implementation of compensators.Discussions of topics not found in other texts--such as pole placement, model matching and robust tracking--add to the texts cutting-edge presentation. Students will appreciate the applications and discussions of practical aspects, including the leading problem in developing block diagrams, noise, disturbances, and plant perturbations. State feedback and state estimators are designed using state variable equations and transfer functions, offering a comparison of the two approaches. The incorporation of MATLAB throughout the text helps students to avoid time-consuming computation and concentrate on control system design and analysis
標(biāo)簽： 控制系統(tǒng)
上傳時(shí)間： 2021-12-15
上傳用戶：
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