练习答案PART ONE Computer BasicsUnit 1 My ComputerSection A I．Fill in the blanks with the information given in the text:1．Charles Babbage; Augusta Ada Byron2．input; output3．VLSI4．workstations; mainframes5．vacuum; transistors6．instructions; software7．digit; eight; byte8．microminiaturization; chipII．Translate the following terms or phrases from English into Chinese and vice versa: 1．artificial intelligence 人工智能2．paper-tape reader 纸空阅读机3．optical computer 光学计算机4．neural network 神经网络5．instruction set 指令集6．parallel processing 平行处理7．difference engine 差分机8．versatile logical element 通用逻辑器件9．silicon substrate 硅基10．vacuum tube 真空管（电子管）11．t he storage and handling of data 数据的存储与处理12．very large-scale integrated circuit 超大规模集成电路13．central processing unit 中央处理器14．personal computer 个人计算机15．analogue computer 模拟计算机16．digital computer 数字计算机17．general-purpose computer 通用计算机18．processor chip 处理器芯片19．operating instructions 操作指令20．input device 输入设备III．Fill in each of the blanks with one of the words given in the following list, making changes if necessary:We can define a computer as a device that accepts input, processes data, stores data, and produces output. According to the mode of processing, computers are either analog or digital. They can be classified as mainframes, minicomputers, workstations, or microcomputers. All else (for example, the age of the machine) being equal, this categorization provides some indication of the computer’s speed, size, cost, and abilities.Ever since the advent of computers, there have been constant changes. First-generation computers of historic significance, such as UNIV AC, introduced in the early 1950s, were based on vacuum tubes. Second-generation computers, appearing in the early 1960s, were those in which transistors replaced vacuum tubes. In third-generation computers, dating from the 1960s, integrated circuits replaced transistors. In fourth-generation computers such as microcomputers, which first appeared in the mid-1970s, large-scale integration enabled thousands of circuits to be incorporated on one chip. Fifth-generation computers are expected to combine very-large-scale integration with sophisticated approaches to computing, including artificial intelligence and true distributed processing.IV．Translate the following passage from English into Chinese.A computer system includes a computer, peripheral（外围的）devices, and software. The electric, electronic, and mechanical devices used for processing data are referred to as hardware. In addition to the computer itself, the term “hardware”refers to components called peripheral devices that expand the computer’s input, output, and storage capabilities. Computer hardware in and of itself does not provide a particularly useful mind tool. To be useful, a computer requires a set of instructions, called software or a computer program, which tells the computer how to perform a particular task. Computers become even more effective when connected to other computers in a network so users can share information.计算机系统包括计算机、外围设备和软件。

用于处理数据的电动、电子与机械设备称为硬件。

除了计算机本身之外，“硬件”这一术语还指被称为外围设备的组件，这些外围设备可扩大计算机的输入、输出和存储能力。

计算机硬件本身在本质上并未提供一件特别有用的智能工具。

计算机要想变得有用，就需要有称为软件或计算机程序的一套指令，来告诉计算机如何执行一项特定的任务。

计算机在以下情况下变得更加有效：与网络中的其他计算机相连接，以使用户能够共享信息Section B I．Fill in the blanks with the information given in the text:1．display2．underwater; GUI3．intranet4．functionalityII．Translate the following terms or phrases from English into Chinese and vice versa:1．circuit board 电路板2．beta testing β测试3．thin-client computer 瘦客户机电脑4．cell phone 蜂窝电话（移动电话）5．digital video 数码摄像机，数码影视6．Pentium processor 奔腾处理器7．virtual screen 虚拟屏幕8．desktop computer specifications 台式计算机规格9．radio frequency 射频10．wearable computer 可佩带式计算机Section C P DA Prizefight: Palm vs. Pocket PCI. Fill in the blanks with the information given in the text:1. With DataViz’s Documents To Go, you can view and edit desktop documents on your PDA without converting them first to a PDA-specific ________. (format)2. Both Palm OS and Windows Mobile PDAs can offer e-mail via ________ so that new messages received on your desktop system are transferred to the PDA for on-the-go reading. (synchronization)3. The Windows Mobile keyboard, Block Recognizer, and Letter Recognizer are all ________ input areas, meaning they appear and disappear as needed. (virtual)4. Generally speaking, Windows Mobile performs better in entering information and playing ________ files while Palm OS offers easier operation, more ________ programs, better desktop compatibility, and a stronger e-mail application. (multimedia; third-party)II. Translate the following terms or phrases from English into Chinese and vice versa:1. data field数据字段2. learning curve学习曲线3. third-party solution第三方解决方案4. Windows Media Player Windows媒体播放器5. 开始按钮Start button6. 指定输入区designated input area7. 手写体识别系统handwriting-recognition system8. 字符集character setUnit 2 Computer ArchitectureSection A I．Fill in the blanks with the information given in the text:1．input; output; storage2．Basic Input Output System3．flatbed scanners; hand-held scanners4．LCD-based5．dot-matrix printers; inkjet printers6．disk drives; memory7．V olatile8．serial; parallelII．Translate the following terms or phrases from English into Chinese and vice versa: 1．information retrieval 信息检索2．voice recognition module 语音识别模块3．touch-sensitive region 触感区，触摸区4．address bus 地址总线5．flatbed scanner 平板扫描仪6．dot-matrix printer 点阵打印机（针式打印机）7．parallel connection 并行连接8．cathode ray tube 阴极射线管9．video game 电子游戏（港台亦称电玩）10．audio signal 音频信号11．o perating system 操作系统12．LCD (liquid crystal display) 液晶显示（器）13．inkjet printer 喷墨打印机14．data bus 数据总线15．serial connection 串行连接16．volatile memory 易失性存储器17．laser printer 激光打印机18．disk drive 磁盘驱动器19．BIOS (Basic Input Output System) 基本输入输出系统20．video display 视频显示器III．Fill in each of the blanks with one of the words given in the following list, making changes if necessary:CD-ROM stands for compact disk read-only memory. Unlike floppy and hard disks, which use magnetic charges to represent 1s and 0s, optical disks use reflected light. On a CD-ROM disk, 1s and 0s are represented by flat areas and bumpy areas (called “pits”) on its bottom surface. The CD-ROM disk is read by a laser that projects a tiny beam of light on these areas. The amount of reflected light determines whether the area represents a 1 or a 0.Like a commercial CD found in music stores, a CD-ROM is a “read-only” disk. Read-only means it cannot be written on or erased by the user. Thus, you as a user have access only to the data imprinted by the publisher.A single CD-ROM disk can store 650 megabytes of data. That is equivalent to 451 floppy disks. With that much information on a single disk, the time to retrieve or access the information is very important. An important characteristic of CD-ROM drives is their access rate.IV．Translate the following passage from English into Chinese.A modem is a device that converts between analog and digital signals. Digital signals, which are used by computers, are made up of separate units, usually represented by a series of 1’s and 0’s. Analog signals vary continuously; an example of an analog signal is a sound wave. Modems are often used to enable computers to communicate with each other across telephone lines. A modem converts the digital signals of the sending computer to analog signals that can be transmitted through telephone lines. When the signal reaches its destination, another modem reconstructs the original digital signal, which is processed by the receiving computer. If both modems can transmit data to each other simultaneously, the modems are operating in full duplex (双工的) mode; if only one modem can transmit at a time, the modems are operating in half duplex mode.调制解调器是在模拟和数字信号之间进行转换的设备。