计算机英语课后答案

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 button

6. 指定输入区 designated input area

7. 手写体识别系统 handwriting-recognition system 8. 字符集 character set

Unit Two: Computer Architecture Unit Two/Section A

I． Fill in the blanks with the information given in the text: 1. input; output; storage 2. Basic Input/Output System

3. flatbed scanners; hand-held scanners 4. LCD-based

5. dot-matrix printers; inkjet printers 6. disk drives; memory 7. volatile

8. serial; parallel

II. Translate the following terms or phrases from English into Chinese and vice versa:

1. function key 功能键，操作键

2. voice recognition module 语音识别模块 3. touch-sensitive region 触敏区 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 10. audio signal 音频信号 11. 操作系统 operating system

12. 液晶显示（器） LCD (liquid crystal display) 13. 喷墨打印机 inkjet printer 14. 数据总线 data bus

15. 串行连接 serial connection 16. 易失性存储器 volatile memory 17. 激光打印机 laser printer 18. 磁盘驱动器 disk drive

19. 基本输入/输出系统 BIOS (Basic Input/Output System) 20. 视频显示器 video display

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 disc read-only memory. Unlike floppy and hard disks,

which use magnetic charges to represent 1s and 0s, optical discs use reflected light. On a

CD-ROM disc, 1s and 0s are represented by flat areas and bumpy (高低不平的) areas (called

“pits”) on its bottom surface. The CD-ROM disc 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” disc.

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 (压印) by the publisher.

A single CD-ROM disc can store 650 megabytes (兆字节) of data. That is equivalent to

451 floppy disks. With that much information on a single disc, 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: 调制解调器是在 模拟和数字信号之间进行转换的设备。计算机使用的是数字信号，

这种信号由离散单元组成，通常用一系列1和0表示。模拟信号是连续变化的；声 波就是

模拟信号的一个例子。调制解调器经常用于实现计算机之间通过电话线的互相通信。调

制解调器将发送端计算机的数字信号转 换成可通过电话线传输的模拟信号。信号到达目

的地后，另外一个调制解调器重构原来的数字信号，供接收端计算机处理。如果两个调

制 解调器可同时互相发送数据，那么它们采用的就是全双工工作方式；如果一次只有一

个调制解调器可以发送数据，那么它们采用的则是半双工工作方 式。 Unit Two/Section B

I. Fill in the blanks with the information given in the text: 1. graphical 2. file; scheduler 3. virtual 4. slice

II. Translate the following terms or phrases from English into Chinese and vice versa:

1. interrupt handler 中断处理程序

2. virtual memory 虚拟存储（器），虚存，虚拟内存 3. context switch 上下文转换，语境转换 4. main memory 主存（储器） 5. bit pattern 位模式

6. 外围设备 peripheral device 7. 进程表 process table 8. 时间片 time slice

9. 图形用户界面 graphical user interface 10. 海量存储器 mass storage Unit Two/Section C

I. Fill in the blanks with the information given in the text: 1. repository

2. central; sub-systems 3. network