Text Aputer is an electronic equipment which can make arithmetic and logical calculation process information rapidly and automatically.计算机是一种能够高速、自动地进行算术和逻辑运算及信息处理的电子设备。
3.The purpose of inventing and developing computer is to make arithmetic calculations rapidly accurately.发明和开发计算机的目的是使算术运算快速准确。
4.Production management ,data counting,office automation,traffic dispatching,information retrieval all belong to this field.生产管理，数据统计，办公自动化，通信调度，信息检索都属于这一领域。
5.Real-time means that the time of computer’s calculating and controlling may match the time of controlled object’s practical running or working. 实时意味着计算机的计算和控制的时间符合受控对象的实际运行或工作的时间。
Text B1.Perhaps the most significant date in the history of computers is the year 1936.it was in this year that the first “computer”was developed。
It was created by Konrad Zuse and dubbed the ZI Computer.也许在计算机历史上最显著日期是今年1936.它是在今年的第一个“电脑”被开发，它由康拉德·楚泽创建，并冠以ZI计算机。
2.While expensive, these machines started the trend for computers within common households.虽然昂贵，这些机器启动电脑的趋势在普通家庭。
3.Two years later ,the Harvard Mark I computer was developed, furthering the science of computing两年后，哈佛大学马克一号电脑的开发，促进了科学计算。
Text A1.The following table helps you to under the differences between the different processors that Intel has introduced over the years.下表给你介绍了因特尔公司公司在过去几年推出了的不同处理器之间的区别。
2.You can see that the number of transistors on a single chip has risen steadily over the years.你可以看到，在过去几年单芯片上晶体管的数量在稳步上升。
5.Clock speed is the maximum rate that the chip can be clocked at. Clock speed will make more sense in the next section.时钟速度是芯片的时钟频率以最大速率。
时钟速度会更有意义在下一节。
Text B1.The memory is that part of a computer in which programs and data are stored. 存储是计算机用来存储程序和数据的部分。
2.When the computer is off,the main memory is empty;when it is on ,the main memory is capable of receiving and holding a copy of the software instructions and data necessary for processing.当计算机处于关闭状态，在主存储器是空的;当它打开时，在主存储器是能够接收和保持的软件指令和数据复制所必需的处理。
4.For comparable amounts of storage ,the EPROM is more expensive than PROM ,but it has the advantage of multiple-update capability.对于可比的存储空间，对EPROM比PROM更昂贵，但它具有多个更新的能力的优点。
5.Some computers are designed with cache memory to increase the speed of transfer of instructions and data from secondary storage to the processor. 某些计算机都设计有高速缓冲存储器，以增加从二级存储器传输指令和数据的处理器的速度。
Text A1.Telephone lines ,for instance ,may connect communications,equipment,which the same building. 电话线，例如，可连接通信设备，在同一建筑物。
2. Networks with computers and peripheral devices in close physical proximity --within the same building ,for instance,are called Local Area Networks(LANs).网络计算机和近距离的外围设备--同一建筑物，例如，被称为本地区域网络（LAN）。
3.Wide Area Networks(WANs) are countrywide and worldwide network.广域网（WAN）是全国和全世界的网络。
5.The computer design of a computer network and the networking software requires the solution of many problems and is a very complicated matter. 计算机网络和网络软件的计算机设计需要许多问题的解决方案，是一个非常复杂的问题。
Text B1.The coverage of one or more interconnected access points--called a hotspot--can comprise an area as small as a single room with wireless-opaque walls or as large as many square miles covered by overlapping access points. 覆盖一个或多个相互连接的接入点——称为热点——可以包括如一个房间般小的地区作为无线不透明的墙或大到许多平方英里的覆盖重叠的接入点。
3.When wireless networking technology first entered the market many problems ensued for consumers who could not rely on products from different vendors working together.当无线网络技术第一次进入市场很多问题引发消费者不信任来自一起工作的不同厂商的产品。
4.The price of chipsets for Wi-Fi continues to drop,marking it an economical networking option included in ever more devices.Wi-Fi芯片价格继续下降，标志着它的经济网络选项包括在更多的设备。
Text A2.Since then people began to associate a word “e-commerce”with the ability of purchasing various goods through the Internet using secure protocols and electronic payment services.自那以后，人们开始将电子商务一词与有能力购买各种各样的商品通过互联网使用的安全协议和电子支付服务相关联。
3.E-commerce is generally considered to be the sales aspect of e-business. 电子商务一般被认为是电子商务方向的销售。
4.The first online information marketplace,including online consulting,was likely the American Information Exchange,another pre-Internet online system introduced in 1991.第一次网上信息市场的需求，包括网上咨询，可能是美国信息交换，另一个前互联网联机系统介绍于1991年。
5.On the institutional level,big corporations and financial institutions use the Internet to exchange financial data to facilitate domestic and international business.在制度层面上，大公司和金融机构使用互联网来交换金融数据，促进国内和国际商务。