计算机专业英语第8章.ppt
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1、第第8章章 Output 本章要点本章要点 l What is Output?lWords and ExpressionslHow To Do:E-maillHow To Work:Personal Web PageslGrammar Focus:状语从句:状语从句lText in Chinese:输出:输出lReading Selection:The Webl科技英语翻译方法与技巧(科技英语翻译方法与技巧()lPractical Writing:通知信:通知信 What is Output?Output is referred to processed data from a compute
2、r.Output devices are any hardware used to provide output from the computer.The most widely used output devices are monitors,printers and audio-output devices.Various output devices effectively translate information processed by the computer into outputsomething that people can understand and use,suc
3、h as texts,graphics,photos,audio and video.Figure 8-1 Figure 8-2Monitor is the most commonly used output device equipped to the microcomputer system(See Figure 8-1).Choosing the right monitor depends on two important factors:size and clarity.A monitors size is indicated by diagonal length of its vie
4、w area,for instance,15,17,19 inches.A monitors clarity is indicated by its resolution,which is measured in pixels.Pixels are individual dots that form images on a monitor.The greater the resolution(the more pixels),the better the clarity of the image and larger monitors require a higher resolution(m
5、ore pixels).The most common type of monitor for office and home is the cathode-ray tube.The CRT is similar to television technically.Another type of widely used monitor is the flat-panel monitor or called Liquid Crystal Display(LCD)monitor(See Figure 8-2).Technically,LCDs use liquid crystal,much thi
6、nner,and fit to portable computers as well as desktop computers.Besides,there are other types of specialized monitors,such as e-book readers,data projectors and high-definition television.What is Output?Output on a monitor is called soft copy and on a paper by a printer is called hard copy(See Figur
7、e 8-3).Three kinds of printers popularly used with microcomputers are ink-jet,laser and thermal.Ink-jet printers spray small droplets of ink at high speed onto the surface of the paper.Ink-jet printers are reliable and inexpensive to print files and photo-quality images from digital cameras(See Figu
8、re 8-4-a).Laser printers use laser beams to produce images with excellent letter and graphics quality(See Figure 8-4-b).More expensive than ink-jet printers,laser printers are used in applications requiring high-quality output(See Figure 8-4-c).A thermal printer uses heat elements to produce images
9、on heat-sensitive paper.Such printers are mainly used Figure 8-4Figure 8-5in scientific labs to record data and color thermal printers are also used to produce high-quality color artwork and text.What is Output?Audio-output devices,like speakers and headphones,are connected to the sound card in the
10、system unit(See Figure 8-5).The sound card captures and plays back recorded sounds.Many devices combine input and output devices,either to save space or for specialized applications.Common combination devices available are fax machines,multifunction devices,Internet telephones and terminals(See Figu
11、re 8-6).Internet telephones are telephones achieving communication through the Internet rather than telephone lines.*Terminals are input and output combinations used to connect the user to a mainframe computer called a host computer or a server.What is Output?Notes:“Terminals are input and output co
12、mbinations used to connect the user to a mainframe computer called a host computer or server.”本句,本句,“used toa server”为动词过去分词词组作为动词过去分词词组作“combinations”的后置的后置定语,其中定语,其中“connectto”意为:将意为:将与与连接,连接,“called a host computer or server”是动词过去分词词组作是动词过去分词词组作“mainframe computer”的后置的后置定语。本句意为:终端是输入输出集成设备,用于连接用户
13、和大型主机或服定语。本句意为:终端是输入输出集成设备,用于连接用户和大型主机或服务器。务器。What is Output?Match each numbered item with the most closely related lettered item by drawing a line between matching items.1output 2hard disk3head crash4floppy disk5online storage6read-only7compact disc8clarityaFree or low-cost storage available at spe
14、cial service Web sites.bIndicated by resolution and measured in pixels.cProcessed data or information from a computer.dAlso known as a diskette.eEnclosed disk drive that contains one or more metallic disks.fHappens when the read-write heads contact the surface of a hard disk.gWidely used optical dis
15、k format.hCannot be written on or erased by the user.Translate the following statements.1输出设备能使计算机与用户进行通信。输出设备能使计算机与用户进行通信。2通过将输出传送给打印机,就可获得一个长久的复制。通过将输出传送给打印机,就可获得一个长久的复制。3没有数据,也就没有什么可处理的东西了。没有数据,也就没有什么可处理的东西了。4计算机并不限于显示字符,也有可能输出图形。计算机并不限于显示字符,也有可能输出图形。5计算机的输出来自主存储器。计算机的输出来自主存储器。6图形的质量或分别率是像素数目的函数。
16、图形的质量或分别率是像素数目的函数。What is Output?Grammar Focus:状语从句状语从句:状语从句在复合句中起状语作用,修饰主句中动词、形容词或副状语从句:状语从句在复合句中起状语作用,修饰主句中动词、形容词或副词。状语从句由从属连词引导,从属连词在从句中不充当成分。词。状语从句由从属连词引导,从属连词在从句中不充当成分。时间状语从句:常用来引导时间状语从句的从属连词有时间状语从句:常用来引导时间状语从句的从属连词有When(当(当的时候),的时候),whenever(每当),(每当),after(在(在之后),之后),before(在(在之前),之前),as(当(当;一
17、边;一边一边),一边),as soon as(一(一九),九),while(在期间),(在期间),till/until(直到),(直到),since(自从),(自从),once(曾(曾经)等等经)等等地点状语从句:常用的连接词有地点状语从句:常用的连接词有Where(在(在地方;那里),地方;那里),wherever(无论哪里)等等(无论哪里)等等原因状语从句:原因状语从句:Because(因为(因为),),since(既然),(既然),as(由于),(由于),now that(即使)等(即使)等等等条件状语从句:引起条件状语从句的连词有条件状语从句:引起条件状语从句的连词有If(如果),(如
18、果),unless(除非),(除非),once(一旦),(一旦),as/so long as(只要)等等(只要)等等 What is Output?目的状语从句:引起目的状语从句的连词有目的状语从句:引起目的状语从句的连词有so that(以便)(以便)in order that(以便)等(以便)等结果状语从句:引起结果状语从句的连词有结果状语从句:引起结果状语从句的连词有So that(结果是;以至),(结果是;以至),so/such that(如此(如此以至于)等以至于)等 让步状语从句:引起让步状语从句的连词有让步状语从句:引起让步状语从句的连词有Though(虽然),(虽然),alth
19、ough(虽然),(虽然),as(尽管),(尽管),even if/even though(即使),(即使),no matter who/what/how(无论谁(无论谁/无论什么无论什么/无论怎样),无论怎样),whoever(不管是谁)(不管是谁)however(无论怎样)等(无论怎样)等方式状语从句:引起方式状语从句的词语一般有方式状语从句:引起方式状语从句的词语一般有As(正如;按照正如;按照),as if/as though(好像)(好像)比较状语从句:引起比较状语从句的词语一般有比较状语从句:引起比较状语从句的词语一般有As as(和(和一样),一样),not as/so as(与
20、(与不一样),不一样),than(比)(比)What is Output?Point out which adverbial clause it is.1They drove with windows closed so that he should not catch cold.2Late as it was,we still continued our way.3When she alighted from the train there was nearly a full moon,and the night was blowy and sweet-smelling.4One of he
21、r lungs is affected a little so that she has to rest.5The curtains were not yet drawn,though the lamps outside were lighted.6The wind had dropped,and it was as lovely a morning as one could desire.7After lunch,since the afternoon was so fine,Grandpa rigged up a camp chair for me on the back green.8F
22、rom where he sat he could see a cluster of apple-trees in blossom.9As the twilight was beginning to fade,we heard the sound of a carriage.10If I were you,I would go to shooch on time.What is Output?Text in Chinese:输出输出指经计算机处理过的数据。输出设备指提供输出的硬件。最广泛使用的输出指经计算机处理过的数据。输出设备指提供输出的硬件。最广泛使用的输出设备有监视器、打印机和音频输出设
23、备。各种输出设备将计算机处理过输出设备有监视器、打印机和音频输出设备。各种输出设备将计算机处理过的信息翻译为人能够理解和使用的输出信息,如文本、图形、照片和视频等。的信息翻译为人能够理解和使用的输出信息,如文本、图形、照片和视频等。监视器是最常用的配备在微型计算机系统上的输出设备。监视器的选择由两监视器是最常用的配备在微型计算机系统上的输出设备。监视器的选择由两个因素决定:尺寸和清晰度。监视器的尺寸由视觉面积的对角线长度衡量,个因素决定:尺寸和清晰度。监视器的尺寸由视觉面积的对角线长度衡量,如如15寸、寸、17寸、寸、19寸。监视器清晰度由分辨率即像素来衡量。像素指在监视寸。监视器清晰度由分辨
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