课后参考答案unit 1〖Ex. 1〗根据课文内容，回答以下问题：1) It is primarily responsible for executing instructions.2) Through the monitor.3) All processors, memory modules, plug-in cards, daughterboards, or peripheral devices can be plugged in those sockets.4) The binary system is used.5) Through clever formatting.6) They are similar to each other. ROM only cannot be altered and does not lose its contents when power is removed.7) “Mouses”8) Floppy disks can be removed from their drives and hard disks can’t.9) Because it is faster than many types of parallel port.10) I/O Port.〖Ex. 3〗把下列句子翻译为中文：1）绝大部分计算机上键盘是主要的文本输入设备。
2）最常见的鼠标器顶部有两个按钮，左按钮是用得最多的。
3）Win 95 和其它操作系统让用户可以调节鼠标器的灵敏度。
4）有些系统向用户提供几种不同的光标显示方式供选择。
5）有些人用鼠标垫子提高鼠标球滚动的摩擦力。
6）右边第二个按钮通常提供一些不太常用的功能。
7）有些鼠标器厂家也为左撇子提供适用的鼠标驱动程序。
8）如今鼠标器是任何个人计算机用户图形界面不可分割的一部分。
9）键盘也包括某些标准功能键。
10）IBM兼容机为商用机（也可用于家庭）〖Ex. 4〗把下列短文翻译成中文系统前面板和普通键盘有专门控制键，用户可以使用这些控制键实现主要的多媒体功能：观相片、听音乐和看电影。
前面板还有为看电视和阅读电视指南而设的快速启动按钮。
〖〖Ex. 7〗用名词做宾语将下面汉语译成英语1. The order of access to different locations does not affect the speed of access.2. We typically/usually store data in Ram. (or Data is typically/usually stored in Ram.)3. The mouse can control a pointer on the screen.4. Some keyboards have independent shift lock and caps lock keys.〖Ex. 8〗用that从句做宾语将下面汉语译成英语1. You should know that you can not only read data from the disk but also write new information to it.2. You should realize that floppies do not hold too much data.3. Our computer teacher said that USB is much slower than Firewire.4. I think/believe that the CPU is primarily responsible for executing instructions.〖Ex. 9〗用疑问连词引出的从句充当宾语翻译下列各句。
1. Please say what the monitor does.2. I wonder (want to know) why the memory can produce arbitrary rational numbers.3. I don’t know whether all the disks can be removed from their drives or not.4. Can you suggest where I can buy a U disk?〖Ex. 10〗根据文章所提供的信息判断正误1. (F)2. (F)3. (T)4. (T)5. (F)6. (F)7. (T)8. (T)9. (T) 10. (T) 11. (F) 12. (T) 13. (F) 14. (T)unit 2〖Ex. 1〗根据课文内容，回答以下问题：1) Some drives are not capable of having new data written to them, such as CD-ROM or DVD-ROMs.2）The signals or power is transmitted along the bus.3）The are meant to perform user-defined tasks.4）Yes, it can also demodulate analog signals and converts them to digital signals.5）Using PCI, a computer can support both new PCI (32 bit) cards while continuing to support Industry Standard Architecture (ISA) expansion cards (16 bit).6) To promote standards for a credit card-size memory or I/O device that would fit intoa notebook or laptop computer.7) “P & P” refers to such devices that you plug into a computer and the operating system can recognize automatically.8) It allows PC to communicate with peripheral hardware such as disk drives, tape drives, printers, scanners etc., much faster than previous interfaces.9) CD-ROM can store large amounts of information.10) Because it stores the computer's operating system, files, programs and documents.11) It sends the images to the monitor.12) Inkjets and bubble jets can.13) Graphic intensive users will.14) It cannot reproduce music, sounds and voices.15) BIOS or CMOS.〖Ex. 3〗把下列句子翻译为中文：1）带宽通常用每秒钟的位数来计量。
2）56K的调制解调器每秒钟能够转换大约57,000位。
3）ISA（工业标准结构）是标准总线结构，与IBMAT主板相关。
4）声音可以通过喇叭或耳机输出。
5）一个G字节相当于1000个兆字节。
6）鼠标器，键盘和打印机都可以通过电缆线与计算机连接。
7）打印机电缆通常为数据的传输提供串行或并行的通道。
8）声音可以通过连接在计算机上的麦克风输入。
9）例如，打印机打印结束后就会向计算机发出中断信号。
10）声卡让你听音乐CD，欣赏DVD电影强烈的音响效果，录音编辑音频文件。
〖Ex. 4〗把下列短文翻译成中文Intel 865PE作为一个新的主流平台，尽管速度不如875P那么快，但与以前的850E芯片组基础上的高端性能相比，在强烈依赖内存的多媒体中及实时三维应用软件中具有极高的性能。
除了低成本系统，Intel把865系列定位为所有系统的主流平台。
对于手头拮据的家庭用户和IT用户，这提高了性能水平。
而这在以前只有发烧友和低端工作站级系统才使用。
〖Ex. 7〗用动词不定式或V-ing做宾语将下面汉语译成英语1. I prefer to use/using the inkjet rather than the laser printer.2. As technological improvements were made, the overall size of computers began to shrink/shrinking.3. If you are a graphic intensive user, you can’t avoid using a scanner.4. If you’re planning to play multimedia games, make sure you have a sound card/you have to own a sound card/your computer has to be equipped with a sound card.5. When your monitor fails to display any character，try checking the video card.6. There are viruses in the hard disk, which need killing/to be killed.7. I suggest you buying a 56K modem.8. How forgetful you are! You forgot my telling you that GB stands for gigabyte.9. When a printer has finished printing, it sends an interrupt signal to the computer.10. I’m planning/intending/meaning to buy a notebook rather than a desktop computer.〖Ex. 8〗根据文章所提供的信息判断正误1. (F)2. (F)3. (F)4. (T)5. (T)6. (F)7. (T)8. (F)9. (F) 10. (T) 11. (T) 12. (T) 13. (T) 14. (F)unit 3〖Ex. 1〗根据课文内容，回答以下问题：1) It is produced in or on a small slice of silicon.2) It is read only memory, ie. a kind of permanent memory that cannot be changed.3) This measurement is generally used when describing the speed of computer systems.4) It controls the data flow between the processor, memory, and the other components of the system.5) It retains its data after the power is removed.6) It uses a synchronous interface to do it.7) The purpose is to ensure all communication from the chipset is collected by the clock edge, providing a controlled delay on heavily loaded memories.8) They are nanosecond (lower is faster) and MHz(higher is faster). The former is for EDO and FPM and the latter is for SDR SDRAM, DDR, SDRAM, and RDRAM.9) SRAM does not need to be refreshed and it retains its contents even when the main current is turned off while DRAM is a kind of volatile memory.10) Hard drive.〖Ex. 3〗把下列句子翻译为中文：1）BIOS（基本输入输出系统）经常被叫做CMOS（互补金属氧化物半导体），它为计算机硬件和软件提供了一个接口。