计算机英语lesson 25

合集下载

七年级英语下册Lesson25教材内容详解冀教版

七年级英语下册Lesson25教材内容详解冀教版

Lesson 25 Good-bye, Beijing再见了,课文英汉对照THINK ABOUT IT! 想一想!●Have you ever said good-bye to a good friend?你曾经和一个好朋友说过再见吗?●Where? When? How did you feel?什么地点?什么时候?你有什么感受?●What makes Danny sad? What makes him happy?什么事使得丹尼很伤心?什么事使得丹尼很伤心?It is time for everyone to go home. 是每个人该回家的时候了。

Danny and jenny will go back to Canada by plane. 丹尼和詹妮将乘飞机回到加拿大。

Li Ming and Mr. Li will go back to Shijianzhuang by train.李明和李夫人乘火车回某某。

They take a taxi to the airport.他们坐出租车去飞机场。

Li ming:Thank you for ing, Danny and Jenny. I hope to see you again!李明:丹尼,詹妮,谢谢你们的到来。

我希望再见到你们!Jenny: I hope so, too! I’ll miss you, Li Ming.詹妮:我也希望!我会想你的,李明。

Jenny: Danny! What about Steven? What about your family?詹妮:丹尼!斯蒂文呢?你的家人呢?(Danny bees happy.丹尼变得开心了。

). Danny: You’re right, Jenny. You are my friend, too. And I can eat donuts everyday at home!你是对的,詹妮。

新冀教版八年级上册英语 Lesson 25 教案

新冀教版八年级上册英语 Lesson 25 教案

Unit 5 My FutureLesson 25 I Want to Be a Teacher!1.知识目标⑴词汇:掌握词汇:might, scientist, grow, engineer⑵短语:give a talk, would /might⑶句型:It’s +adj. + to do sth2. 能力目标⑴让学生了解如何向别人介绍自己⑵让学生了解如何询问对方的爱好3.情感目标(1)交流中能够尊重别人的观点并能表达自己的看法。

(2)培养学生了解自己不同的兴趣和爱好,有利于学生更好的发展。

1.掌握一些与表达理想有关的词组might, would like, hope。

2.激发学生兴趣,运用所学知识表达自己的理想和爱好。

掌握以下句型:1)I want to be a scientist in the future.2) What will I be in the future?3) It’s not easy to be a scientist.Step 1 Lead in: Discuss the following questions: How many names of careers can you name? What do you think of the jobs? (rich? Exciting ?or dangerous? ) Do you want to have one of the jobs?Let the students talk about the questions for a few minutes, then ask some to give the answers in front of the class.Step 2 OK, class. Today we’ll learn Lesson25(板书课题). In this lesson, we will learn Li Ming’s thought for the future. And some advice for him..听录音并检查学生理解情况。

新概念英语第一册第25课Lesson25课文单词知识点

新概念英语第一册第25课Lesson25课文单词知识点

Lesson25Mrs. Smith's kitchen is small.There is a refrigerator in the kitchen.The refrigerator is white.It is on the right.There is an electric cooker in the kitchen. The cooker is blue.It is on the left.There is a table in the middle of the room. There is a bottle on the table.The bottle is empty.There is a cup on the table, too.The cup is clean. 史密斯夫人的厨房很小。

厨房里有个电冰箱。

冰箱的颜色是白的。

它位于房间右侧。

厨房里有个电灶。

电灶的颜色是蓝的。

它位于房间左侧。

房间的中央有张桌子。

桌子上有个瓶子。

瓶子是空的。

桌子上还有一只杯子。

杯子很干净。

【知识点讲解】1. 今天我们将学到和方位有关的表达方式。

文中提到:on the right(left), 在右边(左边);和in the middle of, 在中间。

我们再补充几个:在……上面(有接触的):on sth. 比如“桌子上有一只盒子”:There's a box on the table.在……上面(没有接触的):above sth. 比如“桌子上方有一只鸟”:There's a bird above the table.在……里面:in sth. 比如“盒子里有个皮球”:There's a ball in the box.在……下面:under sth. 比如“桌子下面有只猫”:There's a cat under the table.2. “哪里有什么东西”这样的句型我们用There is ... + 表示方位的词组+ 名词这样的句式表达。

八年级英语上册_lesson_25_I_Want_to_Be_a_Teacher精美导学案

八年级英语上册_lesson_25_I_Want_to_Be_a_Teacher精美导学案
A. May B. maybe C. might
c. I ________ like to be a teacher.
A. Would B. can C. must
d. That man looks funny. ________ he is an actor.
A. May B. Maybe C. Might
这个商店。
Don’t eat too much sugar. 别吃太多的糖。
记住have了吗
have a rest意思是“休息”。 相似结构的短语有:
have a dinner吃饭;have a seat坐下来;have a cold感冒;have a fever发烧;have a party聚会;have apicnic野餐;have a break休息;have a test考试;have a sleep睡觉;have a date约会;have a try试一试;have a look看一看。
She may be at home. 她可能在家。(也能够说:Maybe she is at home.)
You may be right.你可能是对的。(同义句)_______________________________
4.be nice to sb.相当于be good/kind to sb.意思是“对某人好”。例如:
例如:(肯定)_______________________________________________________
(否认)___________________________________________________________
2. give a talk 表示“做报告,做演讲”。give a talk on/about 表示“做一个关于……的讲座”。

计算机专业英语基础知识

计算机专业英语基础知识
2014617计算机专业英语23有短划线连接的合成词filebasedfilebased基于文件的windowsbasedwindowsbased以windows为基础的objectorientedobjectoriented面向对象的threadorientedthreadoriented面向线程的pointtopointpointtopoint点到点plugandplayplugandplay即插即用peartopearpeartopear对等的frontuserfrontuser前端用户linebylinelinebyline逐行2014617计算机专业英语24有短划线连接的合成词pushuppushup上拉pulldownpulldown下拉paperfreepaperfree无纸的jumperfreejumperfree无跳线的usercentricusercentric以用户为中心的powerplantpowerplant发电站castironcastiron铸铁conveyerbeltconveyerbelt传送带machinemademachinemade机制的readingroomreadingroom阅览室2014617计算机专业英语25合成词中间的连接符被省略形成了一个独立的单词input?input输入output?output输出feedback?feedback反馈workshop?workshop车间workshop?workshop车间fanin?fanin扇入fanout?fanout扇出online?online在线aircraftaircraft飞机metalworkmetalwork金属制品2014617计算机专业英语26复合术语?liquidcrystal液晶计算机语言机器制造机器制造长度单位土木工程?computerlanguage?machinebuilding?machinebuilding2014617计算机专业英语27?linearmeasure?civilengineering派生词derivation?这种方法也叫缀合这类词汇非常多专业英语词汇大部分都是用派生法构成的它是根据已有的词通过对词根加上各种前缀和后缀来构成新词

冀教版九年级英语上册 Lesson 25【精品课件】

冀教版九年级英语上册 Lesson 25【精品课件】

put away put out put off
The fruit should be carefully put away.
知识点 5 That’s called…那被叫做……
考向 此句是一般现在时的被动语态,That在这句话 中充当主语,is called 构成被动语态结构。一般 现在时的被动语态的构成为:be动词(am/is/are) +动词的过去分词。 eg:More money is saved by using both sides of paper. 通过使用纸的两面,更多的钱被节省下来了。
知识点 6 scientific/ˌsaɪən'tɪfɪk/adj.科学的
eg:This is a scientific instrument. 这是一件科学仪器。
考向 scientific还表示“细致严谨的”。 eg:We need to be more scientific about this problem. 在这个问题上我们需要更为严谨一些。
get wet. Danny:Well,let’s try it! Brian:Are you ready,Danny?
Danny:No! Wait! (He puts on❾a raincoat and sits down.)
Now I think I’m ready. Jenny:Brian,take your hand off the cardboard.
the water will stay in the jar. Let’s test which theory is correct.
Brian:Good idea,Jenny. That’s called❺ the scientific❻ method.

冀教版英语九年级全一册 Unit 5:Lesson 25 Let’s Do an Experimen

冀教版英语九年级全一册 Unit 5:Lesson 25 Let’s Do an Experimen

学案Lesson25:Let’s do an experiment一、课标要求:1、能连贯、流畅地朗读本课单词、短语、句子。

2、能从文章中找出重点知识,理解大意。

二、学习目标:1、知识目标:掌握的词汇:experiment、jar、upside、、pour、correct、scientific、method、raincoat、force、pressure、conclued及短语turn…upside down、pour out、sicentificmethod、take off2、能力目标:(1)能听懂,理解新词,词组所表达的句子及会话。

(2)通过阅读课文,能回答提出的问题,熟读并理解短文大意。

(3)能用本课所学单词,词组,语法完成各类练习。

(课时2)3、情感目标:(1)敢于开口,表达中不怕出错误。

(2)能对新学内容进行归纳与总结。

(3)通过本课学习,使学生懂得:有了明确的学习目标,学习才有动力,从而帮助学生确定学习目标,增强学生的学习热情和动力。

4、学习重难点:(1)熟记新单词词组、熟读课文(2)文中的三句重点三、预习设计:Ⅰ. 短语连线1. 科学方法 A. experiment2. 涌出 B. correct3. 把..拿开 C. pour out4.把…翻转 D. scientific method5. 实验 E. turn…upside down6. 正确的 F. take offⅡ. 句型展示1. 让我们一起来做实验吧!Let’s do an .2. 把桶里的剩水倒出来。

_____ _____ the water left in the bucket.3. 第三部分提出了科学方法教育的方式和基本途径。

The third part of the_____ _____ by means of education and basic way.4. 你不能颠倒事实。

You can’t _____ the facts_____ _____5. 我们终于在11点起飞,1:30到达威尼斯。

lesson 25英语课件PPT

  lesson 25英语课件PPT
What kind of people did Thomas Edison say he liked? He liked people who had ideas.
1. When I met Li Mei , I saw her _____ football. 2. A to play B playing C played D plays] 3. 2. Tell the boy _____ with fire. It’s dangerous. 4. A to play B don’t play C not to play D not play 5. 3. He bought a house ______ . 6. A his B of his own C him D own. 7. 4. I hear your father ____back in a week. 8. A comes B come C coming D will come 9. 5. Teachers all like students ______ questions. 10. A asking B ask C to ask D ches children ____ the game. A plays B played C to play D play 12. Jim always has _____ things to do. A so many B so much C such a lot D such many 13. I’d like Chinese tea ____ nothing in it A with B without C on D in 14. Not only the students but also the teacher_____ in the classroom at the moment. A were B was C weren’t D wasn’t 15. Mr. Li often teaches his Japanese friends ___ Chinese food. A cook B to cook C cooked D cooks

lesson_25_Do_the_English_speak_English

lesson_25_Do_the_English_speak_English
He_________ writes his own plays, as well ____acts in them ______.
not only but

这个年轻人不仅聪明,而且很勤奋。 This young man is not only clever, but also hardworking. Not only is this young man clever,

The porter, however, could not understand me.

I repeated my question several times and at last he understood.
He answered me, but he spoke neither slowly nor clearly.
singer / Chinese
scientist / English
detective/ Japanese
Barack Obama/ president/ English
Audrey Hepburn/ actress/ English, French, Italian, Spanish, Portuguese,
black and dark 又黑又暗 black and blue 青一块,紫一块
small a _______ andpeaceful _______ town direct simple effective a _______ _______but _______method


I did not know the way to my hotel, so I asked a porter.
‘You'll soon learn English' he said. I wonder. I am not sure.

三年级下册英语教案-《Unit5It’saparrot》Lesson25人教(精通版)

三年级下册英语教案-《Unit5It’saparrot》Lesson25人教(精通版)

三年级下册英语教案《Unit 5 It’s a parrot》Lesson 25 人教(精通版)教学目标1. 知识与技能:学生能够正确理解和运用单词“parrot”和描述动物特征的基本句型“It’s a”。

2. 过程与方法:通过观察图片、小组讨论等活动,培养学生的观察能力和合作学习能力。

3. 情感态度价值观:激发学生对英语学习的兴趣,增强他们探索和表达事物的愿望。

教学内容1. 词汇:parrot, bird, colorful, wings等。

2. 句型: "What is it?" "It’s a parrot."3. 功能:描述动物特征,询问和回答物品名称。

教学重点与难点1. 重点:词汇“parrot”和句型“It’s a”的正确使用。

2. 难点:学生能够流利地运用所学词汇和句型进行简单对话。

教具与学具准备1. 教具:PPT课件,教学录音,动物图片卡片。

2. 学具:学生自备单词卡片,彩笔。

教学过程1. 导入:利用PPT展示不同动物的图片,引导学生复习已学过的动物单词。

2. 新课呈现:展示鹦鹉图片,教授新单词“parrot”,并通过句型练习加强理解。

3. 小组活动:学生分组,用句型“It’s a”描述所给动物的图片。

4. 课堂练习:听录音,跟读并模仿,加强语音语调的准确性。

5. 角色扮演:学生分角色扮演,进行动物识别的对话练习。

板书设计Title: Unit 5 It’s a parrotVocabulary: parrot, bird, colorful, wingsSentence Patterns: "What is it?" "It’s a parrot."作业设计1. 书面作业:完成练习册中与本课相关的练习题。

2. 口头作业:与家长或同伴用所学句型进行动物识别的对话练习。

3. 拓展作业:收集其他动物的图片,用英文标签描述其特征。

冀教版八年级上册英语 Lesson 25 I Want to Be a Teacher! 授课课件

冀教版八年级上册英语 Lesson 25 I Want to Be a Teacher! 授课课件

Hewouldbe______tohisstudehnotms.ework Hewouldn'tgivehisstudentstoogmrouwcsh__________onw
eekends.
scientist doctor
WheantgminiegehrtWangMeibewhensdhoec_to_r______up?
’tgivethemtoomuchhomeworkonweekends!
Shehopetobeadoctorlikehermother. Shewouldhelpsickchildren. 5)4.WhatdoesWangMeihopetobeinthefuture?
Let'sDoIt!
2) Readthelessonandfillintheblanks.
知识点 2 grow/ɡrəʊ/v.生长;成长;种植
考向一 grow是不规则动词,其过去式为grew,过去 分词为grown。 eg: Mygrandpagrewvariousflowersinfrontofourho uselastspring. 去年春天我爷爷在我们的房子前种了各种各样 的花。
来自《点拨》
12.Therewas_____A___raininthesouthofChinalastsummer. A.toomuchB.muchtoo C.toomanyD.manytoo
【点拨】本题采用词语辨析法。toomuch意为“太多”, 修饰不可数名词;muchtoo意为“非常”,修饰形容词 或副词;toomany意为“许多”,修饰可数名词复数; 无manytoo这一搭配。
10.The___m__ig___manshouldseeadoctor. ht, futu re,

计算机语言课程讲解

计算机语言课程讲解

Unit 1Text AComputer BasicsHardwareThe physical portion of the computer. CPUCentral processing unit. The computer chip primarily responsible for executing instructions.MonitorThe screen for viewing computer information is called a monitor.MotherboardThe main printed circuit board in a computer that carries the system buses. It is equipped with sockets to which all processors, memory modules, plug-in cards, daughterboards, or peripheral devices are connected.MemoryComputer memory is used to temporarily store data. In reality, computer memory is only capable of remembering sequences of zeros and ones, but by utilizing the binary number system it is possible to produce arbitrary rational numbers and through clever formatting all manner of representations of pictures, sounds, and animations. The most common types of memory are RAM, ROM, and flash. RAM Random access memory. A data storage device for which the order of access to different locations does not affect the speed of access, except for bursts. Data is typically stored in RAM temporarily for use by the process or while the computer is operating. FPM, EDO, SDRAM, DDR, etc. are all types of RAM. ROM Read-only memory is similar to RAM. It only cannot be altered and does not lose its contents when power is removed.MouseIn computer parlance a mouse can be both the physical object moved around to control1 5 1015 20 25and the pointer itself. Unlike the animal, the proper plural of keyboards will typically have extra keys; however, some of these keys (common examples include Ctrl, Alt) are meant to be used in conjunction with other keys just like shift on a regular typewriter. Other keys (common examples include Insert, Delete, Home, End, Help, function keys,etc.) are meant to be used independently and often perform editing tasks. Keyboards on different platforms will often look slightly different and have somewhat different collections of keys. Some keyboards even have independent shift lock and caps lock keys. Smaller keyboards with only math-related keys are typically called “keypads”. DiskA disk is a physical object used for storing data. It will not forget its data when it loses power. It is always used in conjunction with a disk drive. Some disks can be removed from their drives, and some cannot. Generally it is possible to write new information to a disk in addition to reading data from it, but this is not always the case. FloppyAn extremely common type of removable disk. Floppies do not hold too much data, but most computers are capable of reading them. Note that there are different competing format used for floppies, so that a floppy written by one type of computer might not directly work on another, also sometimes called “diskette”. USBA really fast type of serial port that offers many of the best features of SCSI without the price. Faster than many types of parallel port, a single USB port is capable of chaining many devices without the need of a terminator. USB is much slower (but somewhat less expensive) than Firewire.I/O Port Connection to a CPU that provides a data path between the CPU and external devices,such as a keyboard, display, or reader. It may provide input only, output only, or both input and output.New Wordshardware [ ♒♎♦☪☯] n . 硬件 monitor [ ❍⏹♓♦☯]n . 监视器 motherboard [ ❍✈❆☯♌♎] n . 主板memory [ ❍♏❍☯❒♓] n . 记忆;回忆;存储器 mouse [❍♋◆♦]n . 鼠标 keyboard [ ♓♌♎] n . 键盘disk[♎♓♦]n . 磁盘,圆盘,唱片35 40 45 50 55floppy [ ♐●☐♓] adj. 软的n. 键盘instruction [♓⏹♦♦❒✈☞☯⏹] n. 指令;命令,指示,用法说明screen [♦❒♓⏹] n. 屏;屏幕vt. 掩蔽view [❖ ◆] n. 视域,观察,观看vt. 观察,观看information [♓⏹♐☯❍♏♓☞☯⏹] n. 消息,信息;通知equip [♓♦♓☐] vt. 装备,配备socket [ ♦♓♦] n. 插座,孔temporarily [ ♦♏❍☐☯❒☯❒♓●♓] adv. 暂时地,临时地remember [❒♓❍♏❍♌☯] vt. 记得,想起;记住sequence [ ♦♓♦☯⏹♦] n. 连续,继续;次序animation [ ✌⏹♓❍♏♓☞☯⏹] n. 动画片,卡通type [♦♋♓☐] n. 类型;样式pointer [ ☐♓⏹♦☯] n. 指针,指示器typewriter [ ♦♋♓☐❒♋♓♦☯] n. 打字机conjunction [ ☯⏹♎✞✈☠☞☯⏹] n. 接合,连接;连接词perform [☐☯♐❍] vt. 履行;表演vi. 行动task [♦♋♦] n. 任务,工作,作业keypad [ ♓☐✌♎] n. 键区,数字按键键盘store [♦♦] vt. 存储,储藏diskette [♎♓♦♏♦] n. 磁盘input [ ♓⏹☐◆♦] vt. 输入n. 输入output [ ♋◆♦☐◆♦] n. 产量;输出量;输出PhrasesI/O port 输入输出接口circuit board 电路板in reality 事实上extra key 扩充键be used in 用于disk drive 磁盘驱动器串行接口能够,具有……的能力CPU (Central Process Unit) 中央处理器RAM (Random Access Memory) 随机存储器ROM(Read Only Memory)只读存储器USB (Universal Serial Bus)通用串行总线SCSI (Small Computer System Interface) 小型计算机系统接口Notes[1] It is equipped with sockets to which all processors, memory modules, plug-in cards, daughterboards, or peripheral devices are connected.本句中,to which all processors, memory modules, plug-in cards, daughterboards, or peripheral devices are connected是一个由介词+关系代词引导的定语从句,修饰先行词sockets,表示的意思是all processors, memory modules, plug-in cards, daughterboards, or peripheral devices are connected to the sockets. be equipped with的意思是“具有,装备有”;be connected to表示“与……连接”。

九年级冀教版英语课件 Lesson 25

九年级冀教版英语课件  Lesson 25

Listening task
fever n. 发烧
hospital n. 医院
nurse n. 护士
Listening task: True or False
Danny’s
head hurt. Danny and his father went to the hospital by taxi. Danny had to stay in hospital that night.
Lesson 25 What’s Wrong with Danny?
Warming up

If you don’t feel well, what should you do?
What was the worst illness you’ve ever had?
New words
fever n. 发烧 hospital n. 医院 nurse n. 护士 pain n. 疼痛 abdomen n. 腹
What’s wrong, Danny? 你怎么了,丹尼? 医生出诊常用语: What can I do for you? 哪儿不舒服? Where does it hurt? 哪儿痛? What’s the trouble? 怎么了? What’s the matter /trouble with you? 你 哪儿不舒服?

My stomach hurts. 我肚子痛。 stomach n.胃,肚子,腹vt. 忍受,容忍 A cattle has four stomachs. 牛有四个胃。 How can you stomach their words? 你 怎么能够忍受他们的话? 提示: stomach的复数形式是stomachs。
  1. 1、下载文档前请自行甄别文档内容的完整性,平台不提供额外的编辑、内容补充、找答案等附加服务。
  2. 2、"仅部分预览"的文档,不可在线预览部分如存在完整性等问题,可反馈申请退款(可完整预览的文档不适用该条件!)。
  3. 3、如文档侵犯您的权益,请联系客服反馈,我们会尽快为您处理(人工客服工作时间:9:00-18:30)。

2.At the first setup interface, be sure to select the “I accept the agreement” item, and click the “Next” button, now enter the product’s ID number, your name and your company’s name, and click “Next”, the setup wizard will update the VM (Virtual Machine for Java Language) and reboot the system. 在第一个安装界面,务必选择“我接受协议” 这一项,点击“下一步”按钮,输入产品的ID号,你的名字和 公司的名字,点击“下一步”按钮,安装程序会更新Java虚拟机 并且重启系统。 (1) be sure to do sth.:务必做某事; (2) enter:进入。注意它本身含有into的含义了,所以使用时后面不 要接介词into。 3.If you want to develop with FoxPro, you can buy or borrow a book about FoxPro, and study the details of database to establish database management software, step by step, your programming ability will be better and better. 如果你想使用FoxPro开发,你可以去买或借关于 FoxPro的书,学习数据库的细节来构建数据库管理系统。一步步 的,你的编程能力就会越来越好的。 step by step:一步步的,逐步的。
Summing-up
In this unit, we had talked something about the database. As we had introduced, the theoretical system of the database has grown into a perfect system, and affected every field of the whole society. People had developed lots of database systems to facilitate us. Next, we introduced the Structured Query Language, abbreviated SQL. SQL is the standard language for the relational database, which is the most popular database nowadays. Using it, we can perform the task of data definition, data management and data control and so on. At last, we presented some knowledge about a database management system—FoxPro. It is of great popularity nowadays. It provides us a lot of useful services.
Unit 7 THE DATABASE
Lesson 25 FoxPro
From the lessons we have learned above of this unit, we now have a rough content that database is very useful, so in this lesson we will study a real database software—Microsoft FoxPro. FoxPro is database software of Microsoft Corporation, the latest edition is FoxPro 9.0, which was published in 2005. In the following part, we will learn how to install FoxPro. System Requirements To install FoxPro 9.0, you need the minimum requirements list below (P111) How to install FoxPro 9.0?
Computer Terms
DBMS: Database Management stem,数据库管理系统。
CD: Compact Disc,压缩光盘。 DVD: Digital Video Disc,数字视频光盘。 Relational Database,关系数据库。 EGA:Enhanced Graphic Adapter,增强图像适配器。 EPROM:Erasable Programmable Read Only Memory,可擦 可编程只读存储器。 PDA:Personal Digital Assistant,个人数字助理。
With a PC of system list above or higher, we can install FoxPro 9.0. First, insert the CD into the drive, double click the “setup.exe” icon, the setup wizard will run; at the first setup interface, be sure to select the “I accept the agreement” item, and click the “Next” button, now enter the product’s ID number, your name and your company’s name, and click “Next”, the setup wizard will update the VM (Virtual Machine for Java Language) and will reboot the system. Second, after rebooting, the setup wizard will pop up, select the “Custom” setup option, click “Next”, now browse to the directory you want to install common files, the installer will take a few minutes to setup common files, after that, select the items you want to install and choose its destination, and click the “Continue” button, Finally, the installer will setup the program successfully, otherwise, please check for the errors you encountered with and setup again, finally, you will setup successfully. If you want to develop with FoxPro, you can buy or borrow a book about FoxPro, and study the details of database to establish database management software, step by step, your programming ability will be better and better.
Supplementary Reading
The Origin and the Development of the Database With the development of society, human have to make contact with data. How to organize the data efficiently is an important problem to human. After the production of computer, the speed and scale of data management is incomparable. As the increase of the data needing to manage, the technology of data management came out. Before the 50s of the 20century, data was organized by hand. The characteristic of this stage is that the data was not saved. After the finish of the program, the job will be out of the computer system. The space for the data will be released. Another point is that there is no special software to deal with the data. Between the late 50s and the middle 60s of 20 century is the file system stage. In these years, the data can be saved in the memory. People can retrieve data more convenient. But several problems emerged. The first one is the redundancy of the data.
相关文档
最新文档