1. to know the transmission media of data signals, the structure of full-duplex data transmission system and its peration and the coding of data signals 2. to understand the main idea and

1. to know the origin, operation and disadvantages of asynchronous serial data transmissioneaching 2. to understand the main idea and organization of the tex Objective

1. to know current situation and the future in the telecommunication world Teaching 2. to understand the main idea and organization of the text

1. to know The Integrated Services Digital NetworkTeachi 2. to understand the construction of The Integrated Services Digital NetworkObjectives 3. to master some important new words and passive voiceFocal

1. to know the origin and development of Internet Teaching 2. to understand the main idea and organization of the text

11, Circuit Switching and Packet Switching destination[. de ti' n e i jan]n.目的地,终点 allocate[' aelak e i t]vt.分配,分派,配给 release[ri'li:s]vt.释放,放松,发布 Jargon[吗a:gan]n.行话,土语

asynchronous[a'si6 k ranas]a.异步的 serial[' sirian]a.串行的,串联的 transmission[ t raen z'mi∫an]a.传输,发送 interface[ i n taf e i s]r.接口

一、连续图依的表达式 标准观察者对图像光函数的亮度响应——光场的瞬时光亮度计量

2.4图像采样 一、来样定理

一、离散傅里叶变换 1、定义 有限长序列