出版時(shí)間:2009-2 出版社:機(jī)械工業(yè)出版社 作者:齊從謙 編 頁數(shù):279
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前言
隨著計(jì)算機(jī)、網(wǎng)絡(luò)通信技術(shù)的飛速發(fā)展和日益普及,各行各業(yè)、越來越多的人每天都在與計(jì)算機(jī)、網(wǎng)絡(luò)和通信打交道。然而,與計(jì)算機(jī)、網(wǎng)絡(luò)和通信打交道時(shí)就免不了要使用英語,尤其是在登錄國外的網(wǎng)站進(jìn)行瀏覽和研究時(shí),往往就需要具有一定程度的英語水平。高等工科院校三四年級(jí)的學(xué)生大都通過了國家四、六級(jí)英語考試,具備了較好的基礎(chǔ)英語知識(shí)及聽說能力,但是他們?cè)谡莆张c本專業(yè)密切相關(guān)的英語詞匯和閱讀理解方面往往還有較大的欠缺。作者從自己多年的教學(xué)過程中了解到:這些學(xué)生在英文網(wǎng)站上閱讀資料和信息時(shí),或者在使用英文版的應(yīng)用軟件時(shí),或者在撰寫畢業(yè)論文的英文摘要時(shí),都不是那么得心應(yīng)手。因此,應(yīng)該進(jìn)一步加強(qiáng)“專業(yè)英語”的學(xué)習(xí),多進(jìn)行一些與專業(yè)有關(guān)的英語方面的訓(xùn)練,從而彌補(bǔ)上述不足。為此,面向高等工科院校計(jì)算機(jī)科學(xué)與技術(shù)、網(wǎng)絡(luò)工程及通信工程等專業(yè)的師生,編寫了本書。書中的內(nèi)容大都取自美、英等國家最新出版的教科書、報(bào)刊雜志或在網(wǎng)上發(fā)表的有關(guān)計(jì)算機(jī)、網(wǎng)絡(luò)及通信方面的文章,具有一定的代表性。
內(nèi)容概要
本書從美、英等國家最新出版的教科書、報(bào)刊雜志或網(wǎng)絡(luò)上發(fā)表的科技文章中精選了42篇在計(jì)算機(jī)、網(wǎng)絡(luò)及通信等方面有代表性的文章,并進(jìn)行了認(rèn)真地分析和加工。文中特別注意了一些專業(yè)術(shù)語的英文表達(dá)形式以及它們的轉(zhuǎn)義,對(duì)一些疑難的句子或語法現(xiàn)象進(jìn)行了解釋和注解。本書還通過練習(xí)進(jìn)一步鞏固所學(xué)的知識(shí),幫助學(xué)生閱讀和理解全文。 本書分為計(jì)算機(jī)科學(xué)與技術(shù)、網(wǎng)絡(luò)及通信技術(shù)三大部分。每篇文章分為正文、詞匯、注釋、內(nèi)容概述及練習(xí)五個(gè)模塊。本書內(nèi)容新穎了重點(diǎn)突出,特色鮮明,適合作為高等學(xué)校工科計(jì)算機(jī)科學(xué)與技術(shù)、網(wǎng)絡(luò)工程、通信工程、電子信息工程、機(jī)電一體化及電子商務(wù)等專業(yè)的廣大學(xué)生和教師的“專業(yè)英語”教學(xué)用書,也可以作為相關(guān)行業(yè)的廣大工程技術(shù)人員的參考用書。
書籍目錄
出版說明前言Part Ⅰ Computer 1.1 Computer Science(計(jì)算機(jī)科學(xué)) 1.2 Computer Systems History(計(jì)算機(jī)系統(tǒng)的歷史) 1.3 Computer Architecture(計(jì)算機(jī)結(jié)構(gòu)) 1.4 The Universal Serial Bus(通用串行總線) 1.5 An idealized Computer(一臺(tái)理想化的計(jì)算機(jī)) 1.6 Microprocessor and Applications(微處理器及其應(yīng)用) 1.7 0perating System Introduction(操作系統(tǒng)簡(jiǎn)介) 1.8 Computer Programming Language(計(jì)算機(jī)程序設(shè)計(jì)語言) 1.9 The Introduction ofPHP(PHP簡(jiǎn)介) 1.10 About MySQL(MySQL數(shù)據(jù)庫簡(jiǎn)介) 1.11 Computer Simulation(計(jì)算機(jī)仿真) 1.12 Computerized Automation(計(jì)算機(jī)自動(dòng)化) 1.13 Computer Vision(計(jì)算機(jī)視覺) 1.14 Computer Aided Design(計(jì)算機(jī)輔助設(shè)計(jì)) 1.15 Multimedia Technology(多媒體技術(shù)) 1.16 Bill Gates,Speech to Tsinghua University(比爾·蓋茲在清華大學(xué)的講話)Part Ⅱ Networks 2.1 The Basic of Computer Network(計(jì)算機(jī)網(wǎng)絡(luò)基礎(chǔ)) 2.2 The OSI Reference Model(開放系統(tǒng)互連參考模型) 2.3 TCP/IP(傳輸控制協(xié)渺網(wǎng)際協(xié)議) 2.4 Network Devices(網(wǎng)絡(luò)設(shè)備) 2.5 Transmitting Media(傳輸介質(zhì)) 2.6 IP Routing Protocols(IP路由選擇協(xié)議) 2.7 Routed Protocol(被動(dòng)路由協(xié)議) 2.8 How the Intemet Works(互聯(lián)網(wǎng)工作原理) 2.9 Information Superhighway(信息高速公路) 2.10 The Ancient History of the Intemet(互聯(lián)網(wǎng)史話) 2.11 A Brave New Web(奇妙的網(wǎng)絡(luò)新世界) 2.12 Killer App ofthe Wired World(情有獨(dú)鐘的有線世界:網(wǎng)上購物) 2.13 Marketing Is Changing,Thanks to the Internet(營銷起變化,緣于互聯(lián)網(wǎng)) PartⅢ Communication 3.1 Introduction of Communication(通信簡(jiǎn)介) 3.2 Basic Knowledge of Communication(通信基礎(chǔ)) 3.3 Introduction to Optical Fiber Communication(光纖通信簡(jiǎn)介) 3.4 Communication Satellite and GPS(通信衛(wèi)星與全球定位系統(tǒng)) 3.5 0ptical Communication Technology(光通信技術(shù)) 3.6 Digital Certificates(數(shù)字證書) 3.7 Modulation and Encoding in Communication(通信中的調(diào)制和編碼) 3.8 GSM Technology(全球移動(dòng)通信系統(tǒng)技術(shù)) 3.9 The Principle and Components ofRadar(雷達(dá)工作原理及組件) 3.10 Type and Applications of Radar(雷達(dá)的種類及應(yīng)用) 3.11 Video Conferencing Technologies(視頻會(huì)議技術(shù)) 3.12 The E-Learning:Annotation(E-Learning:詮釋) 3.13 The E-Learning:Review(E-Learning:述評(píng))Appendix(附錄)Appendix A The Terms and Abbreviations for Computer and Network Communication(附錄A 計(jì)算機(jī)、網(wǎng)絡(luò)與通信常用術(shù)語及縮略語)Appendix B Reference Answers(附錄B 練習(xí)題參考答案)
章節(jié)摘錄
USB supports four kinds of frames: control, isochronous, bulk, and interrupt. Control frames are used to configure devices, give them commands, and inquire about their status. Isochronous frames are for real-time devices such as microphones, loudspeakers, and telephones that need to send or accept data at precise time intervals. They have a highly-predictable delay but provide no retransmissions in the event of errors. Bulk frames are for large transfers to or from devices with no real-time requirements such as printers. Finally, interrupt frames are needed because USB does not support interrupts. For example, instead of having the keyboard cause an interrupt whenever a key is struck, the operating system can poll it every 50 ms to collect any pending keystrokes.A frame consists of one or more packets, possibly some in each direction. Four kinds of packets exist: token, data, handshake, and special. Token packets are from the root to a device and are for system control. The SOF. IN, and OUT packets in Fig. 1 - 11 are token packets. The SOF packet is the first one in each frame and marks the beginning of the frame. If there is no work to do, the SOF packet is the only one in the frame. The IN token packet is a poll, asking the device to return certain data. Fields in the IN packet tell which bit pipe is being polled so the device knows which data to return ( if it has multiple streams). The OUT token packet announces that data for the device will follow. A fourth type of token packet, SETUP ( not shown in the figure), in used for configuration.Besides the token packet, three other kinds exist. These are DATA (used to transmit up 64 bytes of information either way ), handshake, and special packets. The format of a data packet is shown in Fig. 1 - 11. It consists of an 8-bit synchronization field, an 8-bit packet type (PID), the payload, and a 16-bit CRC ( Cyclic Redundancy Code) 10 to detect errors. Three kinds of handshake packets are defined: ACK (the previous data packet was correctly received), NAK (a CRC error was detected ), and STALL(please wait-I am busy right now).11
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《計(jì)算機(jī)·網(wǎng)絡(luò)·通信專業(yè)英語》是普通高等教育計(jì)算機(jī)規(guī)劃教材之一。
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