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sequence

sequence是數(shù)據(jù)中一個(gè)特殊存放等差數(shù)列的表,該表受數(shù)據(jù)庫(kù)系統(tǒng)控制,任何時(shí)候數(shù)據(jù)庫(kù)系統(tǒng)都可以根據(jù)當(dāng)前記錄數(shù)大小加上步長(zhǎng)來(lái)獲取到該表下一條記錄應(yīng)該是多少,這個(gè)表沒(méi)有實(shí)際意義,常常用來(lái)做主鍵用。不過(guò)各個(gè)數(shù)據(jù)庫(kù)廠商沒(méi)有一個(gè)統(tǒng)一的標(biāo)準(zhǔn)--各有各的一套對(duì)sequence的定義和操作。
  • perl tester to steam character sequence. formats it into lines

    perl tester to steam character sequence. formats it into lines

    標(biāo)簽: character sequence formats tester

    上傳時(shí)間: 2017-08-18

    上傳用戶:維子哥哥

  • sequence alignement using different algorithms

    sequence alignement using different algorithms

    標(biāo)簽: alignement algorithms different sequence

    上傳時(shí)間: 2013-12-03

    上傳用戶:從此走出陰霾

  • this application was developed in visual c# to draw the sequence of the data given by Lagrange Inter

    this application was developed in visual c# to draw the sequence of the data given by Lagrange Interpolation algorithm

    標(biāo)簽: application developed the Lagrange

    上傳時(shí)間: 2013-12-24

    上傳用戶:dreamboy36

  • labview教程--Case結(jié)構(gòu)和sequence結(jié)構(gòu)

    文檔為labview教程--Case結(jié)構(gòu)和sequence結(jié)構(gòu)詳解文檔,是一份不錯(cuò)的參考資料,感興趣的可以下載看看

    標(biāo)簽: labview

    上傳時(shí)間: 2022-07-11

    上傳用戶:canderile

  • 偽隨機(jī)序列發(fā)生器的FPGA設(shè)計(jì)與實(shí)現(xiàn)

    偽隨機(jī)序列 (Pseudo-Random sequence,PRS)廣泛應(yīng)用于密碼學(xué)、擴(kuò)頻通信、雷達(dá)、導(dǎo)航等領(lǐng)域,其設(shè)計(jì)和分析一直是國(guó)際上的研究熱點(diǎn)。混沌序列作為一種性能優(yōu)良的偽隨機(jī)序列,近年來(lái)受到越來(lái)越多的關(guān)注。尋找一種性能更為良好的混沌偽隨機(jī)序列(ChaosPseudo Random sequence,CPRS)并且完成其硬件實(shí)現(xiàn),在理論研究與工程應(yīng)用上都是十分有價(jià)值的。基于切延遲橢圓反射腔映射混沌系統(tǒng)(Tangent-Delay Ellipse Reflecting Cavity map System,TD-ERCS)已被理論分析和測(cè)試證明具有良好的密碼學(xué)性質(zhì)。本文介紹了一種基于TD-ERCS構(gòu)造偽隨機(jī)序列發(fā)生器 (Pseudo Random sequenceGenerator,PRSG)的新方法;并基于這種方法,提出了以現(xiàn)場(chǎng)可編程門陣列 (Field Programmable Gate Array,F(xiàn)PGA)為平臺(tái)的硬件設(shè)計(jì)實(shí)現(xiàn)方案,采用硬件描述語(yǔ)言 (VHSIC Hardware DescriptionLanguage,VHDL )完成了整個(gè)系統(tǒng)的設(shè)計(jì),通過(guò)了仿真與適配,完成了硬件調(diào)試;詳細(xì)地論述了系統(tǒng)總體框架及內(nèi)部模塊設(shè)計(jì),重點(diǎn)介紹了TD-ERCS算法實(shí)現(xiàn)單元的設(shè)計(jì),并在系統(tǒng)中設(shè)計(jì)加入了異步串行接口,完善了整個(gè)系統(tǒng)的模塊化,可使系統(tǒng)嵌入到現(xiàn)有的各類密碼系統(tǒng)與設(shè)備中;基于FDELPHI編程環(huán)境,完成了計(jì)算機(jī)應(yīng)用軟件的設(shè)計(jì),為使用基于TD-ERCS開(kāi)發(fā)的PRSG硬件產(chǎn)品提供了人機(jī)交互界面,也為分析與測(cè)試硬件系統(tǒng)產(chǎn)生的CPRS提供了方便;同時(shí)依據(jù)美國(guó)國(guó)家標(biāo)準(zhǔn)與技術(shù)研究院 (National Institute of Standards andTechnology,NIST)提出的偽隨機(jī)序列性能指標(biāo),對(duì)軟件與硬件系統(tǒng)產(chǎn)生的CPRS進(jìn)行了標(biāo)準(zhǔn)測(cè)試,軟件方法所得序列各項(xiàng)性能指標(biāo)完全合格,硬件FPGA所得序列僅三項(xiàng)測(cè)試未能通過(guò),其原因有待進(jìn)一步研究。

    標(biāo)簽: FPGA 偽隨機(jī)序列 發(fā)生器

    上傳時(shí)間: 2013-06-20

    上傳用戶:heart520beat

  • TLC1549串口傳輸與單片機(jī)的AD設(shè)計(jì)

    詳細(xì)介紹了TLC1549系列模數(shù)轉(zhuǎn)換器的特點(diǎn)及工作原理,然后根據(jù)TLC1549的工作時(shí)序和A/D轉(zhuǎn)換原理針對(duì)實(shí)際問(wèn)題編寫(xiě)了詳細(xì)的匯編語(yǔ)言程序。 Abstract:  A basic principle and characteristic of TLC1549 analog-to-digital converter are introduced? detailedly in this article.Through engineering-oriented illustration,a microcomputer programmer base on basic principle and time sequence of TLC1549 is writted.

    標(biāo)簽: 1549 TLC 串口 傳輸

    上傳時(shí)間: 2014-07-16

    上傳用戶:blans

  • TPS65930 TPS65920與OMAP3530硬件連接

    This document describes the system hardware implementation for the OMAP3530 processor and theTPS65930/20 companion power integrated circuit (IC). The document concentrates on the powerconnectivity for the processor and the companion power IC. The document also briefly explains someother specifics related to power, such as the boot modes and the power-up sequence.

    標(biāo)簽: TPS 65930 65920 3530

    上傳時(shí)間: 2013-11-14

    上傳用戶:yeling1919

  • Using the Stellaris Microcontr

    Luminary Micro Stellaris™ microcontrollers that are equipped with an analog-to-digital converter(ADC), use an innovative sequence-based sampling architecture designed to be extremely flexible,yet easy to use. This application note describes the sampling architecture of the ADC. Sinceprogrammers can configure Stellaris microcontrollers either through the powerful StellarisFamilyDriver Library or through direct writes to the device's control registers, this application note describesboth methods. The information presented in this document is intended to complement the ADCchapter of the device datasheet, and assumes the reader has a basic understanding of howADCsfunction.

    標(biāo)簽: Microcontr Stellaris Using the

    上傳時(shí)間: 2013-10-14

    上傳用戶:blans

  • 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

  • NIOSII用戶定制指令

    With the Altera Nios II embedded processor, you as the system designercan accelerate time-critical software algorithms by adding custominstructions to the Nios II processor instruction set. Using custominstructions, you can reduce a complex sequence of standard instructionsto a single instruction implemented in hardware. You can use this featurefor a variety of applications, for example, to optimize software innerloops for digital signal processing (DSP), packet header processing, andcomputation-intensive applications. The Nios II configuration wizard,part of the Quartus® II software’s SOPC Builder, provides a graphicaluser interface (GUI) used to add up to 256 custom instructions to theNios II processor

    標(biāo)簽: NIOSII 用戶 定制 指令

    上傳時(shí)間: 2013-11-07

    上傳用戶:swing

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