21世纪高职高专规划教材 新编计算机专业英语

本书是21世纪高职高专规划教材，也可以用于计算机专业的英语培训教材。全书共分为14个单元，以*计算机硬件、软件及网络技术内容为主线，每单元之间相对独立。
　　对话部分强调人机交流的术语。课文部分是*计算机技术的结构、原理等。内容包括：外置硬件、内置硬件、存储基础、操作系统、Word软件、PowerPoint软件、Excel软件、家庭系统软件、执行脚本语言、网页制作、病毒与安全等。每个单元中还有科技英语语言特点解析、实用写作技巧，并配有相应的练习。
　　本书内容全面、条理清晰、通俗易懂、实用性强。不仅使读者学到了有关计算机专业方面的基本词汇、基本表达方法和较系统的英文计算机的知识，而且还能提高读者阅读计算机方面的科技文章和技术手册等资料的能力。

Unit1The History of Computer Development（计算机发展史）
　TEXT:The History of Computer Development
　　Early modern computer are typically grouped into four generations.Each generation is marked by improvements in basic technology.These improvements in technology have been extraordinary and each advance has resulted in computers of lower cost,higher speed,greater memory capacity,and smaller size.
First Generation(1945-1959)
The vacuum tube was invented in 1906.And during the first half of the twentieth century,it was the fundametal technology that was used to construct radios,televisions,radar,X-rays machines,and a wide variety of other electronic devices.It is also the primary technology associated with the first generation of computing machines. The first operational electronic general-purpose computer,named the ENIAC(Electronic Numerical Integrator and Computer),was built in 1943(Fig.1-1)and used 18,000 cacuum tubes.……