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主要内容 4.1物理层的定义和功能 4.2物理层的特性 4.3典型的物理层标准接口 4.3.1 EIA RS--232-C 4.3.2 IEA RS-449/422-A423-A 4.3.3 CCITT X.21 4.4传输介质 4.5其它网络传输技术
文档格式:PPT 文档大小:430KB 文档页数:1
华中科技大学:《计算机网络原理》课程教学资源(PPT课件讲稿)网络结构图
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5.1先查阅标准库函数,然后再回答下列代码完成什么功能? int c; while((c= getchar)!=Eo putchar(isupper(c)?tolower(c): c); 答:将大写字母转换为小写输出,其它字符原样输出
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《自动控制原理》课程教学资源:教学日历
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《自动控制原理》课程教学资源:Hw_Part
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1.1 Introduction to Automatic Control Automatic Control Systems permeate life in all advanced societies today. Technological develop- ments have made it possible to travel to the moon; explore outer space. And
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(P173)In this section the concepts outlined previously will be developed further into some straightforward guidelines for plotting more complex root loci, which will be f llustrated by focusing on a specific example Root locus: (review of previous lecture)
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13.1 Conformal Mapping: Cauchy's Theorem (保角映射:柯西定理) Recall Stability Problem: To determine the relative stability of a closed-loop system we must investigate the characteristic equation of the system
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Plot the bode diagram of a complex system Write the transfer function of system through the bode diagram
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Module 3 First Order System (1 hours) First order systems .Time response of first order systems .Proportional feedback control of first order systems
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