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FOUNDATION

FOUNDATION類層次的根是NSObject類,它(和NSObject及NSCopying協(xié)議一起)定義了基本的對(duì)象屬性和行為。FOUNDATION框架的剩余部分由幾組相互關(guān)聯(lián)的類和一些獨(dú)立的類組成。有一些代表基本數(shù)據(jù)類型的類,如字符串、字節(jié)數(shù)組、用于存儲(chǔ)其它對(duì)象的集合類;一些代表系統(tǒng)信息的類,如日期類;還有一些代表系統(tǒng)實(shí)體的類,比如端口、線程、和進(jìn)程。圖1、圖2、和圖3所示的類層次描述了這些類的邏輯分組及其繼承關(guān)系。
  • tcp ip協(xié)議詳解 中文版PDF

    很多不同的廠家生產(chǎn)各種型號(hào)的計(jì)算機(jī),它們運(yùn)行完全不同的操作系統(tǒng),但TCP.IP協(xié)議族允許它們互相進(jìn)行通信。這一點(diǎn)很讓人感到吃驚,因?yàn)樗淖饔靡堰h(yuǎn)遠(yuǎn)超出了起初的設(shè)想。T C P / I P起源于6 0年代末美國(guó)政府資助的一個(gè)分組交換網(wǎng)絡(luò)研究項(xiàng)目,到9 0年代已發(fā)展成為計(jì)算機(jī)之間最常應(yīng)用的組網(wǎng)形式。它是一個(gè)真正的開(kāi)放系統(tǒng),因?yàn)閰f(xié)議族的定義及其多種實(shí)現(xiàn)可以不用花錢或花很少的錢就可以公開(kāi)地得到。它成為被稱作“全球互聯(lián)網(wǎng)”或“因特網(wǎng)(Internet)”的基礎(chǔ),該廣域網(wǎng)(WA N)已包含超過(guò)1 0 0萬(wàn)臺(tái)遍布世界各地的計(jì)算機(jī)。本章主要對(duì)T C P / I P協(xié)議族進(jìn)行概述,其目的是為本書(shū)其余章節(jié)提供充分的背景知識(shí)。 TCP.IP協(xié)議 縮略語(yǔ) ACK (ACKnowledgment) TCP首部中的確認(rèn)標(biāo)志 API (Application Programming Interface) 應(yīng)用編程接口 ARP (Address Resolution Protocol) 地址解析協(xié)議 ARPANET(Defense Advanced Research Project Agency NETwork) (美國(guó))國(guó)防部遠(yuǎn)景研究規(guī)劃局 AS (Autonomous System) 自治系統(tǒng) ASCII (American Standard Code for Information Interchange) 美國(guó)信息交換標(biāo)準(zhǔn)碼 ASN.1 (Abstract Syntax Notation One) 抽象語(yǔ)法記法1 BER (Basic Encoding Rule) 基本編碼規(guī)則 BGP (Border Gateway Protocol) 邊界網(wǎng)關(guān)協(xié)議 BIND (Berkeley Internet Name Domain) 伯克利I n t e r n e t域名 BOOTP (BOOTstrap Protocol) 引導(dǎo)程序協(xié)議 BPF (BSD Packet Filter) BSD 分組過(guò)濾器 CIDR (Classless InterDomain Routing) 無(wú)類型域間選路 CIX (Commercial Internet Exchange) 商業(yè)互聯(lián)網(wǎng)交換 CLNP (ConnectionLess Network Protocol) 無(wú)連接網(wǎng)絡(luò)協(xié)議 CRC (Cyclic Redundancy Check) 循環(huán)冗余檢驗(yàn) CSLIP (Compressed SLIP) 壓縮的S L I P CSMA (Carrier Sense Multiple Access) 載波偵聽(tīng)多路存取 DCE (Data Circuit-terminating Equipment) 數(shù)據(jù)電路端接設(shè)備 DDN (Defense Data Network) 國(guó)防數(shù)據(jù)網(wǎng) DF (Don’t Fragment) IP首部中的不分片標(biāo)志 DHCP (Dynamic Host Configuration Protocol) 動(dòng)態(tài)主機(jī)配置協(xié)議 DLPI (Data Link Provider Interface) 數(shù)據(jù)鏈路提供者接口 DNS (Domain Name System) 域名系統(tǒng) DSAP (Destination Service Access Point) 目的服務(wù)訪問(wèn)點(diǎn) DSLAM (DSL Access Multiplexer) 數(shù)字用戶線接入復(fù)用器 DSSS (Direct Sequence Spread Spectrum) 直接序列擴(kuò)頻 DTS (Distributed Time Service) 分布式時(shí)間服務(wù) DVMRP (Distance Vector Multicast Routing Protocol) 距離向量多播選路協(xié)議 EBONE (European IP BackbONE) 歐洲I P主干網(wǎng) EOL (End of Option List) 選項(xiàng)清單結(jié)束 EGP (External Gateway Protocol) 外部網(wǎng)關(guān)協(xié)議 EIA (Electronic Industries Association) 美國(guó)電子工業(yè)協(xié)會(huì) FCS (Frame Check Sequence) 幀檢驗(yàn)序列 FDDI (Fiber Distributed Data Interface) 光纖分布式數(shù)據(jù)接口 FIFO (First In, First Out) 先進(jìn)先出 FIN (FINish) TCP首部中的結(jié)束標(biāo)志 FQDN (Full Qualified Domain Name) 完全合格的域名 FTP (File Transfer Protocol) 文件傳送協(xié)議 HDLC (High-level Data Link Control) 高級(jí)數(shù)據(jù)鏈路控制 HELLO 選路協(xié)議 IAB (Internet Architecture Board) Internet體系結(jié)構(gòu)委員會(huì) IANA (Internet Assigned Numbers Authority) Internet號(hào)分配機(jī)構(gòu) ICMP (Internet Control Message Protocol) Internet控制報(bào)文協(xié)議 IDRP (InterDomain Routing Protocol) 域間選路協(xié)議 IEEE (Institute of Electrical and Electronics Engineering) (美國(guó))電氣與電子工程師協(xié)會(huì) IEN (Internet Experiment Notes) 互聯(lián)網(wǎng)試驗(yàn)注釋 IESG (Internet Engineering Steering Group) Internet工程指導(dǎo)小組 IETF (Internet Engineering Task Force) Internet工程專門(mén)小組 IGMP (Internet Group Management Protocol) Internet組管理協(xié)議 IGP (Interior Gateway Protocol) 內(nèi)部網(wǎng)關(guān)協(xié)議 IMAP (Internet Message Access Protocol) Internet報(bào)文存取協(xié)議 IP (Internet Protocol) 網(wǎng)際協(xié)議 I RTF (Internet Research Task Force) Internet研究專門(mén)小組 IS-IS (Intermediate System to Intermediate System Protocol) 中間系統(tǒng)到中間系統(tǒng)協(xié)議 ISN (Initial Sequence Number) 初始序號(hào) ISO (International Organization for Standardization) 國(guó)際標(biāo)準(zhǔn)化組織 ISOC (Internet SOCiety) Internet協(xié)會(huì) LAN (Local Area Network) 局域網(wǎng) LBX (Low Bandwidth X) 低帶寬X LCP (Link Control Protocol) 鏈路控制協(xié)議 LFN (Long Fat Net) 長(zhǎng)肥網(wǎng)絡(luò) LIFO (Last In, First Out) 后進(jìn)先出 LLC (Logical Link Control) 邏輯鏈路控制 LSRR (Loose Source and Record Route) 寬松的源站及記錄路由 MBONE (Multicast Backbone On the InterNEt) Internet上的多播主干網(wǎng) MIB (Management Information Base) 管理信息庫(kù) MILNET (MILitary NETwork) 軍用網(wǎng) MIME (Multipurpose Internet Mail Extensions) 通用I n t e r n e t郵件擴(kuò)充 MSL (Maximum Segment Lifetime) 報(bào)文段最大生存時(shí)間 MSS (Maximum Segment Size) 最大報(bào)文段長(zhǎng)度 M TA (Message Transfer Agent) 報(bào)文傳送代理 MTU (Maximum Transmission Unit) 最大傳輸單元 NCP (Network Control Protocol) 網(wǎng)絡(luò)控制協(xié)議 NFS (Network File System) 網(wǎng)絡(luò)文件系統(tǒng) NIC (Network Information Center) 網(wǎng)絡(luò)信息中心 NIT (Network Interface Tap) 網(wǎng)絡(luò)接口栓(S u n公司的一個(gè)程序) NNTP (Network News Transfer Protocol) 網(wǎng)絡(luò)新聞傳送協(xié)議 NOAO (National Optical Astronomy Observatories) 國(guó)家光學(xué)天文臺(tái) NOP (No Operation) 無(wú)操作 NSFNET (National Science FOUNDATION NETwork) 國(guó)家科學(xué)基金網(wǎng)絡(luò) NSI (NASA Science Internet) (美國(guó))國(guó)家宇航局I n t e r n e t NTP (Network Time Protocol) 網(wǎng)絡(luò)時(shí)間協(xié)議 NVT (Network Virtual Terminal) 網(wǎng)絡(luò)虛擬終端 OSF (Open Software Foudation) 開(kāi)放軟件基金 OSI (Open Systems Interconnection) 開(kāi)放系統(tǒng)互連 OSPF (Open Shortest Path First) 開(kāi)放最短通路優(yōu)先 PAWS (Protection Against Wrapped Sequence number) 防止回繞的序號(hào) PDU (Protocol Data Unit) 協(xié)議數(shù)據(jù)單元 POSIX (Portable Operating System Interface) 可移植操作系統(tǒng)接口 PPP (Point-to-Point Protocol) 點(diǎn)對(duì)點(diǎn)協(xié)議 PSH (PuSH) TCP首部中的急迫標(biāo)志 RARP (Reverse Address Resolution Protocol) 逆地址解析協(xié)議 RFC (Request For Comments) Internet的文檔,其中的少部分成為標(biāo)準(zhǔn)文檔 RIP (Routing Information Protocol) 路由信息協(xié)議 RPC (Remote Procedure Call) 遠(yuǎn)程過(guò)程調(diào)用 RR (Resource Record) 資源記錄 RST (ReSeT) TCP首部中的復(fù)位標(biāo)志 RTO (Retransmission Time Out) 重傳超時(shí) RTT (Round-Trip Time) 往返時(shí)間 SACK (Selective ACKnowledgment) 有選擇的確認(rèn) SLIP (Serial Line Internet Protocol) 串行線路I n t e r n e t協(xié)議 SMI (Structure of Management Information) 管理信息結(jié)構(gòu) SMTP (Simple Mail Transfer Protocol) 簡(jiǎn)單郵件傳送協(xié)議 SNMP (Simple Network Management Protocol) 簡(jiǎn)單網(wǎng)絡(luò)管理協(xié)議 SSAP (Source Service Access Point) 源服務(wù)訪問(wèn)點(diǎn) SSRR (Strict Source and Record Route) 嚴(yán)格的源站及記錄路由 SWS (Silly Window Syndrome) 糊涂窗口綜合癥 SYN (SYNchronous) TCP首部中的同步序號(hào)標(biāo)志 TCP (Transmission Control Protocol) 傳輸控制協(xié)議 TFTP (Trivial File Transfer Protocol) 簡(jiǎn)單文件傳送協(xié)議 TLI (Transport Layer Interface) 運(yùn)輸層接口 TTL (Ti m e - To-Live) 生存時(shí)間或壽命 TUBA (TCP and UDP with Bigger Addresses) 具有更長(zhǎng)地址的T C P和U D P Telnet 遠(yuǎn)程終端協(xié)議 UA (User Agent) 用戶代理 UDP (User Datagram Protocol) 用戶數(shù)據(jù)報(bào)協(xié)議 URG (URGent) TCP首部中的緊急指針標(biāo)志 UTC (Coordinated Universal Time) 協(xié)調(diào)的統(tǒng)一時(shí)間 UUCP (Unix-to-Unix CoPy) Unix到U n i x的復(fù)制 WAN (Wide Area Network) 廣域網(wǎng) WWW (World Wide Web) 萬(wàn)維網(wǎng) XDR (eXternal Data Representation) 外部數(shù)據(jù)表示 XID (transaction ID) 事務(wù)標(biāo)識(shí)符 XTI (X/Open Transport Layer Interface) X/ O p e n運(yùn)輸層接口

    標(biāo)簽: tcp 協(xié)議

    上傳時(shí)間: 2013-11-13

    上傳用戶:tdyoung

  • FOUNDATION入門(mén)—仿真

    Explain how to open the Waveform Viewer for Verification ? State how to insert nodes into the Waveform Viewer ? Tell how to assign Stimulus with the Stimulator Selector

    標(biāo)簽: FOUNDATION 仿真

    上傳時(shí)間: 2013-11-05

    上傳用戶:gps6888

  • USB接口控制器參考設(shè)計(jì),xilinx提供VHDL代碼 us

    USB接口控制器參考設(shè)計(jì),xilinx提供VHDL代碼 usb xilinx vhdl ;  This program is free software; you can redistribute it and/or modify ;  it under the terms of the GNU General Public License as published by ;  the Free Software FOUNDATION; either version 2 of the License, or ;  (at your option) any later version. ;      ;  This program is distributed in the hope that it will be useful, ;  but WITHOUT ANY WARRANTY; without even the implied warranty of ;  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the ;  GNU General Public License for more details. ;      ;  You should have received a copy of the GNU General Public License ;  along with this program; if not, write to the Free Software ;  FOUNDATION, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.

    標(biāo)簽: xilinx VHDL USB us

    上傳時(shí)間: 2013-10-29

    上傳用戶:zhouchang199

  • FOUNDATION入門(mén)—仿真

    Explain how to open the Waveform Viewer for Verification ? State how to insert nodes into the Waveform Viewer ? Tell how to assign Stimulus with the Stimulator Selector

    標(biāo)簽: FOUNDATION 仿真

    上傳時(shí)間: 2013-10-29

    上傳用戶:daguogai

  • xilinx完整的教程

    xilinx完整的教程,FOUNDATION

    標(biāo)簽: xilinx 教程

    上傳時(shí)間: 2014-01-01

    上傳用戶:AbuGe

  • This program is free software you can redistribute it and/or modify it under the terms of the GNU Ge

    This program is free software you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software FOUNDATION either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

    標(biāo)簽: redistribute the software program

    上傳時(shí)間: 2013-12-22

    上傳用戶:cazjing

  • Copyright© 2004 Sergiu Dumitriu, Marta Gî rdea, Că tă lin Hriţ cu Permission is

    Copyright© 2004 Sergiu Dumitriu, Marta Gî rdea, Că tă lin Hriţ cu Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software FOUNDATION with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled "GNU Free Documentation License" All brand names, product names, or trademarks belong to their respective holders.

    標(biāo)簽: Permission Copyright 259 Dumitriu

    上傳時(shí)間: 2015-04-02

    上傳用戶:jackgao

  • 本章將介紹C++編程語(yǔ)言的最基本的元素

    本章將介紹C++編程語(yǔ)言的最基本的元素,以及C++的指針、引用和作用域。在第3章和第4章,將介紹C++的類和面向?qū)ο缶幊獭T谀闶褂梦④浕A(chǔ)類庫(kù)(Microsoft FOUNDATION Class Library,MFC)進(jìn)行Windows編程時(shí),你需要所有這些知識(shí)。 C++是一種復(fù)雜的語(yǔ)言,它的許多元素非常抽象。它也是一個(gè)龐大的語(yǔ)言,為專業(yè)編程而設(shè)計(jì)。本書(shū)的重點(diǎn)是使用Visual C++語(yǔ)言來(lái)利用MFC編寫(xiě)Windows程序,因此沒(méi)有深入地討論C++語(yǔ)言。 MFC是構(gòu)造于原始C++之上的應(yīng)用程序框架,它提供了一個(gè)Windows應(yīng)用程序工作的基礎(chǔ),一個(gè)可以向內(nèi)添入自己代碼的框架。這個(gè)框架提供了絕大多數(shù)Windows特征——菜單、工具欄、對(duì)話框、控件和滾動(dòng)條。它也提供使開(kāi)發(fā)者能相對(duì)容易的將數(shù)據(jù)寫(xiě)入文件、打印數(shù)據(jù)等機(jī)制。這個(gè)框架的部件是C++的類,這些類表示了應(yīng)用程序的組件,例如應(yīng)用程序的主窗口、它的對(duì)話框、字符串、如矩形和點(diǎn)的圖像對(duì)象,甚至應(yīng)用程序本身。因此,為了使用Visual C++編寫(xiě)Windows程序,你需要知道足夠的C++知識(shí)來(lái)利用MFC。

    標(biāo)簽: 編程語(yǔ)言 元素

    上傳時(shí)間: 2015-04-07

    上傳用戶:yt1993410

  • 利用匯編語(yǔ)言進(jìn)行F2812DSP編程實(shí)現(xiàn)FFT分析常用的庫(kù)文件

    利用匯編語(yǔ)言進(jìn)行F2812DSP編程實(shí)現(xiàn)FFT分析常用的庫(kù)文件,實(shí)踐證明TI網(wǎng)站上找到的C28XX FOUNDATION 使用不如上述匯編頭文件組合有效

    標(biāo)簽: F2812 2812 DSP FFT

    上傳時(shí)間: 2013-12-24

    上傳用戶:hjshhyy

  • C++ Demystified: A Self-Teaching Guide by Jeff Kent ISBN:0072253703 McGraw-Hill/Osborne © 20

    C++ Demystified: A Self-Teaching Guide by Jeff Kent ISBN:0072253703 McGraw-Hill/Osborne © 2004 This hands-on, step-by-step resource will guide you through each phase of C++ programming, providing you with the FOUNDATION to discover how computer programs and programming languages work.

    標(biāo)簽: Self-Teaching Demystified McGraw-Hill 0072253703

    上傳時(shí)間: 2013-12-13

    上傳用戶:1427796291

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