内容简介
《计算机·网络·通信专业英语》从美、英等国家最新出版的教科书、报刊杂志或网络上发表的科技文章中精选了42篇在计算机、网络及通信等方面有代表性的文章,并进行了认真地分析和加工。文中特别注意了一些专业术语的英文表达形式以及它们的转义,对一些疑难的句子或语法现象进行了解释和注解。《计算机·网络·通信专业英语》还通过练习进一步巩固所学的知识,帮助学生阅读和理解全文。
《计算机·网络·通信专业英语》分为计算机科学与技术、网络及通信技术三大部分。每篇文章分为正文、词汇、注释、内容概述及练习五个模块。《计算机·网络·通信专业英语》内容新颖了重点突出,特色鲜明,适合作为高等学校工科计算机科学与技术、网络工程、通信工程、电子信息工程、机电一体化及电子商务等专业的广大学生和教师的“专业英语”教学用书,也可以作为相关行业的广大工程技术人员的参考用书。
目录
出版说明
前言
Part Ⅰ Computer
1.1 Computer Science(计算机科学)
1.2 Computer Systems History(计算机系统的历史)
1.3 Computer Architecture(计算机结构)
1.4 The Universal Serial Bus(通用串行总线)
1.5 An idealized Computer(一台理想化的计算机)
1.6 Microprocessor and Applications(微处理器及其应用)
1.7 0perating System Introduction(操作系统简介)
1.8 Computer Programming Language(计算机程序设计语言)
1.9 The Introduction ofPHP(PHP简介)
1.10 About MySQL(MySQL数据库简介)
1.11 Computer Simulation(计算机仿真)
1.12 Computerized Automation(计算机自动化)
1.13 Computer Vision(计算机视觉)
1.14 Computer Aided Design(计算机辅助设计)
1.15 Multimedia Technology(多媒体技术)
1.16 Bill Gates,Speech to Tsinghua University(比尔·盖兹在清华大学的讲话)
Part Ⅱ Networks
2.1 The Basic ..
书摘
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 t