計算機專業(yè)英語前

言

人類進入21世紀以來，計算機技術的發(fā)展最為迅猛，其對各行各業(yè)的影響

程度也是不可估量的。計算機專業(yè)英

語是計算機學科的一門重要工具課程，英語作為計算機業(yè)的行業(yè)性語言，有

著其他語言不可替代的功能。無論是

學習使用計算機語言，還是學習使用

和維護計算機硬軟件產(chǎn)品，都離不開

計算機英語。大量最新的計算機技術資料用英文發(fā)表，要求計算機專業(yè)技術人員必須具有熟練閱讀英文計算機下一頁

返回前

言

快速閱讀能力的提高，而不是句型、語法的分析。計算機專業(yè)英語的句型、語法相對簡單，在很多資料中，為了

滿足人們對快速閱讀理解文章的需要，往往采用簡單句來組織文章，甚至有

些句子根本不符合語法規(guī)則。因此，

學習計算機專業(yè)英語應更注重詞匯的

學習，詞匯掌握了，句子的意思就不

難理解了。本書根據(jù)專業(yè)英語的這一特點，引入了大量的詞匯，而忽略了語法的講述、句型的分析，使讀者能上一頁

下一頁

返回前

言

院學生的文章來組成課文。內(nèi)容包括計算機基礎知識、計算機硬件、計算

機軟件、編程語言、數(shù)據(jù)庫、多媒體、網(wǎng)絡方面的知識。在內(nèi)容編排上，注

意與計算機技術其他專業(yè)課程的協(xié)調(diào)

性，注重實踐性和實用性，難度適當，每章配有相關文章、翻譯、習題及其

屏幕英語。不僅有利于了解計算機領

域的最新技術發(fā)展和相關的專業(yè)知識，而且能在閱讀中掌握并積累計算機專業(yè)英語詞匯，提高閱讀能力，實現(xiàn)計上一頁

下一頁

返回前

言

本書由劉京俐老師擔任主編，關麗霞老師、武雪梅老師和徐江紅老師擔任副主編。本書在編寫過程中參考了大量的文獻資料，是相互協(xié)作的結(jié)果。

由于時間倉促，編寫水平和經(jīng)驗有限，書中難免存在疏漏之處，懇請各位讀

者在使用本教材的過程中給予關注，

并將意見及建議及時反饋給我們，以

便修訂時改進。上編一頁者返回目

錄Unit

1

Computer

BasicsUnit

2

Computer

HardwareUnit

3

Computer

SoftwareUnit

4

The

Programming

LanguagesUnit

5

DatabaseUnit

6

MultimediaUnit

7

Network下一頁目

錄第1單元計算機基礎第2單元計算機硬件第3單元計算機軟件第4單元程序設計語言第5單元數(shù)據(jù)庫第6單元多媒體第7單元網(wǎng)絡上一頁

下一頁目

錄附錄A參考答案附錄B常見縮略詞表上一頁Unit

1

Computer

Basics1.1

Introduction

to

computer1.2

Material

turning

your

computer

off

and下一頁第1單元計算機基礎1.1計算機介紹1.2開機與關機的資料上一頁1.1

Introduction

to

computer

Are

you

new

to

computers?

Do

youwonder

what

they

do

and

why

youwould

want

to

use

one?

This

article

willgive

an

overview

of

computers:

whatthey

are,

the

different

types,

and

whatyou

can

do

with

them.What

are

computers?

Computers

are

machines

that

performtasks

or

calculations

according

to

a

setinstructions,or

programs.The下f一i頁rs返t回fu1.1

Introduction

to

computertoday’s

computers

areamazing.

Not

only

are

they

thousands

of

times

faster,they

can

fit

on

your

desk,

in

your

lap,

oreven

in

your

pocket.

Computers

work

through

an

interactionof

hardware

and

software.Hardwarerefers

to

the

parts

of

a

computer

thatyou

can

see

and

touch,including

thecase

and

everything

inside

it.The

mostimportant

piece

of

hardwar上e一頁is下a一t頁in返y回1.1

Introduction

to

computerandperforms

calculations.

Hardwareitems

such

as

your

monitor,

keyboard,mouse,

printer

and

other

componentsare

often

called

hardware

devices,

ordevices.

Software

refers

to

the

instructions,orprograms,that

tell

the

hardware

what

todo.A

word

processing

program

that

youcan

use

to

write

letters

on

yourcomputer

is

a

type

of

softw上a一r頁e.下T一h頁e

返回1.1

Introduction

to

computerENIAC

Introduced

in

1946,

ENIAC

(ElectronicNumerical

Integrator

and

Computer)was

the

first

general-purpose

electronicomputer.It

was

built

for

the

UnitedStates

military

to

calculate

the

paths

oartillery

shells.Physically,ENIAC

wasenormous,weighing

more

than

27

000kilograms

(60

000

pounds)and

filling

alarge

room.ENIAC

used

abo上u一t頁18下0一0頁0

返回1.1

Introduction

to

computerTypes

of

computers

Computers'range

in

size

and

capabilityare

not

samely.At

one

end

of

the

scaleare

supercomputers,very

largecomputers

with

thousands

of

linkedmicroprocessors

that

perform

extremelycomplex

calculations.At

the

other

endare

tiny

computers

embedded

in

cars,TVs,stereo

systems,calculators,andappliances.These

compute上r一s頁ar下e一b頁ui返l回t

t1.1

Introduction

to

computer

The

personal

computer

(or

PC)

isdesigned

to

be

used

by

one

person

at

atime.

This

section

describes

the

varioukinds

of

personal

computers:

desktops,laptops,

handheld

computers,

and

TabletPCs.Desktop

computers

Desktop

computers

are

designed

for

useat

a

desk

or

table.They

are

typicallylarger

and

more

powerful

t上h一a頁n

o下t一h頁er返回1.1

Introduction

to

computercalled

thesystem

unit,

is

usually

arectangular

case

that

sits

on

orunderneath

a

desk.

Other

components,such

as

the

monitor,

mouse

andkeyboard,

are

connected

to

the

systemunit(See

PIC

1.1).Laptop

computers

Laptop

computers

are

lightweightportable

computers

with

a

thin

screen.They

are

often

called

note上b一o頁ok下一頁返回1.1

Introduction

to

computerkeyboard

in

a

single

case.

The

screenfolds

down

onto

the

keyboard

when

notin

use(See

PIC

1.2).Handheld

computers

Handheld

computers,

also

calledpersonal

digital

assistants

(PDAs),

arebattery-powered

computers

and

smallenough

to

carry

almost

anywhere.Although

not

as

powerful

as

desktops

orlaptops,handhelds

are

use上f一u頁l

f下o一r頁返回1.1

Introduction

to

computer

as

making

telephone

calls

or

gettingaccess

to

the

Internet.

Instead

ofkeyboards,

handhelds

have

touchscreens

that

you

use

with

your

finger

ora

stylus

(a

pen-shaped

pointing

tool)(SPIC

1.3).Tablet

PCs

Tablet

PCs

are

portable

computers

thatcombine

features

of

laptops

andhandhelds.Like

laptops,t上h一e頁y’下一r頁e返回1.1

Introduction

to

computerThey

can

also

convert

your

handwritinginto

typed

text.

Some

tablet

PCs

are“convertibles”

with

a

screen

thatswivels

and

unfolds

to

reveal

a

keyboardunderneath(See

PIC

1.4).What

can

you

do

with

computers?

In

the

workplace,many

people

usecomputers

to

keep

records,analyze

datado

research,and

manage

projects.Athome,you

can

use

computer上s一t頁o

f下i一n頁d

返回1.1

Introduction

to

computer

You

can

also

use

your

computer

toconnect

to

the

Internet,

a

network

thatlinks

computers

around

the

world.Internet

access

is

available

for

a

monthfee

in

most

urban

areas,

and

increasinglin

less

populated

areas.

With

Internetaccess,

you

can

communicate

with

people

all

over

the

world

and

find

a

vastamount

of

information.Here

are

some

of

the

most

p上o一p頁ul下a一r頁返回1.1

Introduction

to

computerThe

web

The

World

Wide

Web

(usually

called

theWeb)

is

a

gigantic

storehouse

ofinformation.

The

web

is

the

mostpopular

part

of

the

Internet,

partlybecause

it

displays

most

information

invisually

appealing

format.

Headlines,text

and

pictures

can

be

combined

on

asingle

webpage—much

like

a

page

in

amagazine—along

with

soun上d一s頁an下d一頁返回1.1

Introduction

to

computer

Surfing

the

web

means

exploring

it.

Youcan

find

information

on

the

web

aboutalmost

any

topic

imaginable.

Forexample,

you

can

read

news

stories

andmovie

reviews,

check

airline

schedules,see

street

maps,

get

the

weatherforecast

for

your

city,

or

research

ahealth

condition.

Most

companies,government

agencies,

museums

andlibraries

have

websites

with

informatio上一頁

下一頁

返回about

their

products,

services,

or1.1

Introduction

to

computer

The

web

is

also

a

shopper’s

delight.You

can

browse

and

purchase

products—books,

music,

toys,

clothing,electronics

and

much

more—at

thewebsites

of

major

retailers.

You

can

alsbuy

and

sell

used

items

throughwebsites

that

use

auction-style

biddingE-mail

E-mail(short

for

electronic

mail)is

aconvenient

way

to

communic上a一t頁e

w下i一t頁h

返回1.1

Introduction

to

computersimultaneously,

and

you

can

save,

printand

forward

E-mail

to

others.

You

cansend

almost

any

type

of

file

in

an

E-mailmessage,

including

documents,

picturesand

music

files.

And

with

E-mail,

youdon’t

need

a

stamp!Instant

messaging

Instant

messaging

is

like

having

a

real-time

conversation

with

another

personor

a

group

of

people.When上y一o頁u

t下y一p頁e返回1.1

Introduction

to

computer

to

all

participants.

Unlike

E-mail,

allparticipants

have

to

be

online(connected

to

the

Internet)

and

in

frontof

their

computers

at

the

same

time.Communicating

by

means

of

instantmessaging

is

called

chatting.Pictures,

music

and

movies

If

you

have

a

digital

camera,you

canmove

your

pictures

from

the

camera

toyour

computer.Then

you

ca上n一p頁ri下n一t頁th返e回m,1.1

Introduction

to

computer

by

importing

(transferring

to

yourcomputer)

music

from

audio

CDs

or

bypurchasing

songs

from

a

music

website.If

your

computer

comes

with

a

DVDplayer,

you

can

watch

movies.Game

Do

you

like

to

play

games?

Thousands

ofcomputer

games

in

every

conceivablecategory

are

available

to

entertain

youGet

behind

the

wheel

of

a

r上a一c頁e

c下a一r頁,返回1.1

Introduction

to

computer

compete

with

other

players

around

theworld

through

the

Internet.

Windowsincludes

a

variety

of

card

games,

puzzlegames

and

strategy

games.Money

management

Many

financial

programs

can

help

youtrack

monthly

expenses,

calculate

taxpayments,

and

monitor

investments.You

can

also

pay

your

bills

electronicalwhich

ensures

that

payment上s一頁are下一頁返回1.1

Introduction

to

computerKey

wordscomputer計算機perform

task執(zhí)行任務calculation計算instruction指令program程序electronic

computer電子計算機上一頁

下一頁

返回1.1

Introduction

to

computerhardware硬件software軟件chip芯片

central

processing

unit(CPU)中央處理器microprocessor微處理器monitor監(jiān)視器，顯示器keyboard鍵盤mouse鼠標上一頁

下一頁

返回1.1

Introduction

to

computerword

processing

program字處理程序operating

system(OS)操作系統(tǒng)

ENIAC(Electronic

Numerical

Integratorand

Computer)電子數(shù)字積分計算機data數(shù)據(jù)capability性能supercomputers超級計算機personal

computer(PC)個人計算機design設計access訪問上一頁

下一頁

返回1.1

Introduction

to

computerhard

drive硬盤驅(qū)動器prompt提示user用戶click單擊password密碼cancel取消function功能quit退出display顯示，顯示器上一頁

下一頁

返回1.1

Introduction

to

computersystem

unit系統(tǒng)單元laptop

computer膝上型計算機notebook

computer筆記本電腦handheld

computer手持式計算機tablet

PCs平板計算機network網(wǎng)絡information信息World

Wide

Web萬維網(wǎng)webpage網(wǎng)頁上一頁

下一頁

返回1.1

Introduction

to

computerdocument文檔，文件file文件online在線digital

camera數(shù)碼相機slide

show幻燈片management管理financial

program財務程序上一頁

返回1.2

Material

turning

yourcomputer

off

and

You

turn

the

power

on

to

start

and

off

tostop.On

Almost

all

computers

are

made

with

apower

switch

in

the

front.

However,some

older

machines

may

have

a

switchon

the

back

of

the

box.

Normally,after

you

turn

the

computeron,it

will“boot

up”(or

load

thestartup

software

and

the

operat下i一n頁g

返回1.2

Material

turning

yourcomputer

off

and

(1)

If

the

computer

wasn’t

shut

downproperly,

it

will

probably

run

a

programto

scan

the

hard

drive

for

errors

and

tryto

fix

them

if

found.

(Windows

users:

Ifthe

computer

prompts

you

to

fix

aproblem,

allow

it

to

do

so

and

choose“Skip

Undo”

if

it

becomes

an

option.)(Macintosh

users:

You

won’t

have

todo

anything

except

click

“Done”

or“OK”

to

continue.)上一頁

下一頁

返回1.2

Material

turning

yourcomputer

off

and

(2)

If

the

computer

prompts

you

toenter

a

password,

do

so

if

you

know

itand

click

“OK”.

If

there

isn’tsupposed

to

be

a

password,

click

“OK”to

go

on

(hopefully).

If

that

doesn’twork,

you

will

need

to

find

out

what

thepassword

is.Off

When

you

have

quit

your

programs

andare

ready

to

shut

down

the上c一o頁mpu下t一e頁r,返回1.2

Material

turning

yourcomputer

off

andMacintosh:

Special

>

Shut

Down

Your

computer

may

display

an

extrascreen,

but

will

ultimately

do

one

of

twothings:

(1)

Turn

it

off

(including

the

power).You’ll

need

to

turn

off

any

devices

thatneed

to

be

turned

off

(printers,

monitorspeakers,

etc.).

(2)Display

a

screen

saying

it’s

OK

toturn

the

power

off(or

shut上一d頁own下)一.頁Go返回1.2

Material

turning

yourcomputer

off

andExercise

1.

Answer

the

following

questionaccording

to

the

text

above.

What

will

you

do

if

the

computerwasn’t

shut

down

properly？2.

Fill

in

the

blanks

with

proper

words.

(1)

Almost

all

computers

are

made

witha

power

switch

in

the

.

(2)

If

the

computer

prompts

you

toenter

a

password,

do

so

if

you

know

it上一頁

下一頁

返回1.2

Material

turning

yourcomputer

off

and(3)

When

you

haveyour

programs

and

are

ready

tothe

computer,

click

onthe

proper

sequence

for

your

machine.Key

wordspower

switch電源開關boot

up啟動startup啟動load載入，裝載上一頁

下一頁

返回1.2

Material

turning

yourcomputer

off

anddesktop桌面shut

down關機service服務fix修復hard

drive硬盤驅(qū)動器skip

undo跳過quit退出speaker音箱上一頁

下一頁

返回1.2

Material

turning

yourcomputer

off

andScreen

English

1.

Acknowledge

and

accept

conditionsof

the

message.承認并接受該信息的條件。

2.

All

data

on

the

specified

hard

disk

wbe

lost.指定硬盤上的所有數(shù)據(jù)將會丟失。3.

All

files

in

directory

will

be

delete目錄里的所有文件將被刪除上一。頁下一頁

返回1.2

Material

turning

yourcomputer

off

and

4.

Another

file

already

exists

by

thisname.已經(jīng)存在一個同名文件。

5.

A

read-only

file

cannot

be

changed

orsaved.只讀文件不能修改或保存。

6.

A

password

is

needed

to

connect

tothis

network

device.連接網(wǎng)絡需要一個密碼。上一頁

下一頁

返回7.

A

serious

disk

error

has

occurred1.2

Material

turning

yourcomputer

off

and

8.

A

shortcut

key

or

a

name

for

themacro

is

required

before

recording.需要一個快捷鍵或宏名才能記錄。

9.

In

addition

to

adding

and

subtractinnumbers,

the

calculator

also

displaysand

manipulatestext.

除了加減數(shù)字外，計算器還可顯示及處理文本。10.Accept

the

configurat上i一o頁n

s下h一o頁wn返回1.2

Material

turning

yourcomputer

off

and11.

Access

denied.拒絕訪問。12.

Are

you

sure

to

quit

Setup?確實要退出安裝嗎？

13.

Are

you

sure

you

want

to

deletethese

10

items?確實要刪除這10個項目嗎？14.

Attempt

to

remove

the

currentdirectory.上一頁

下一頁

返回1.2

Material

turning

yourcomputer

off

and

15.

Be

sure

that

the

printer

isconnected

properly

and

use

the

ControlPanel

to

verify

that

the

printer

isproperly

configured.

務必使打印機正確聯(lián)機，并通過控制面板驗證打印機配置是否正確。

16.

Before

you

can

send

a

fax,

you

mustspecify

your

name

and

fax

number.必須指定姓名和傳真號才能發(fā)送傳真。上一頁

下一頁

返回1.2

Material

turning

yourcomputer

off

and18.

Cannot

change

attributes.不能改變屬性。19.

Cannot

create

temporary

file.不能創(chuàng)建臨時文件。

20.

Cannot

verify

the

update

setting

fothe

linked

object.不能驗證該鏈接對象的更新設置。上一頁

返回1.1計算機介紹

你熟悉計算機嗎？你驚嘆它們所做的事情嗎？為什么你想要使用計算機？這篇文章會給出計算機的概述：計算機的概念、種類和用途。什么是計算機？

計算機是一個可以完成任務或者按照

一組指令或者程序進行計算的機器。

第一臺完全的電子計算機出現(xiàn)在20世

紀40年代，它是巨型機，需要一組人

員去操作。和早期的計算機相比下，一頁如返回1.1計算機介紹

計算機通過硬件和軟件的配合來工作。硬件是指計算機中你能看到和摸到的

部分，包括機箱和在機箱里面的任何

東西。最重要的硬件是在計算機里面

的一個極小的矩形芯片，稱為中央處

理器(CPU)或者微處理器。它是計算機的“大腦”，這部分可以翻譯指令和

完成計算。硬件產(chǎn)品諸如顯示器、鍵

盤、鼠標、打印機和其他的組件通常被稱為硬件設備或者設備。上一頁

下一頁

返回1.1計算機介紹

ENIAC(電子數(shù)字積分計算機)誕生于

1946年，它是第一臺多用途的電子計算機。它是為美國軍事機構(gòu)計算彈道而制造的。實際上，ENIAC非常巨大，重達27

000多千克(60

000磅)，并且占滿一間大屋子。ENIAC使用了大約18000個電子管，每一個都有一個小燈泡的大小。這些電子管很容易被燒壞，需要不斷地更換。計算機的種類上一頁

下一頁

返回1.1計算機介紹

個人計算機(PC)可以在某個時間由一個人來使用。下面將描述不同種類的個

人計算機：臺式機、膝上型計算機、

手持式計算機和平板式計算機。臺式機

臺式機設計成可以放在一張桌子上來

使用。它們比其他類型的個人計算機

大，而且功能更加強大。臺式機由獨

立的組件組成，最主要的組件稱為系

統(tǒng)單元，它是一個矩形的箱上子一頁，下位一頁于返回1.1計算機介紹膝上型計算機

膝上型計算機是一個輕便的、有著比較薄的顯示器的計算機。因為它的尺寸比較小，所以經(jīng)常被稱為筆記本電腦。膝上型計算機可以用電池供電，因此你可以把它們帶到任何地方。不像臺式機，膝上型計算機把CPU、顯示器和鍵盤放在一個箱子里。當不用的時候顯示器可以折疊到鍵盤上面。手持式計算機上一頁

下一頁

返回1.1計算機介紹存儲地址和電話號碼、玩游戲。有些

性能更加先進，例如可以打電話或者

訪問因特網(wǎng)。手持式計算機可以用手

指或者觸筆(鋼筆形狀的指針工具)觸摸屏幕來替代鍵盤。平板式計算機

平板式計算機是結(jié)合了膝上型和手持

式計算機特性的便攜式計算機。像膝

上型計算機一樣，它們功能強大并且

有內(nèi)置的顯示屏。像手持式上計一頁算下機一頁一返回1.1計算機介紹你可以用計算機來做什么？

在工作場所，許多人用計算機來保管記錄、分析數(shù)據(jù)、做研究、管理項目。在家中，能夠使用計算機來查找信息、存儲圖片和音樂、追蹤財政情況、玩

游戲及與其他人交流——這僅僅是計

算機所能做事情的一小部分。

你也能夠把計算機連接到因特網(wǎng)上。

因特網(wǎng)是連接全世界的計算機的網(wǎng)絡。在大多數(shù)城市里可以每月交上費一頁訪下問一頁因返回1.1計算機介紹網(wǎng)

萬維網(wǎng)(通常成為網(wǎng))是一個巨大的信息倉庫。網(wǎng)絡是因特網(wǎng)上最流行的部分，其中一部分原因是它以人們喜愛的格

式顯示大多數(shù)信息。標題、文本和圖

片能夠結(jié)合在一個單獨的網(wǎng)頁上面，

非常像雜志上的頁面，再加上聲音和

動畫。網(wǎng)站是一個互連的網(wǎng)頁的集合。網(wǎng)絡中包含有幾百萬個網(wǎng)站和幾十億個網(wǎng)頁。上一頁

下一頁

返回1.1計算機介紹

網(wǎng)絡也是購物者的樂趣所在。你可以在較大的零售商的網(wǎng)站上瀏覽和購買

產(chǎn)品——書籍、音樂、玩具、衣服、

電子產(chǎn)品等。你也可以通過網(wǎng)站使用

拍賣的方式購買和售出使用過的產(chǎn)品。電子郵件

電子郵件是和其他人聯(lián)系的一種便捷

的方式。你發(fā)送一個電子郵件時，它

幾乎立即到達接收者的收件箱里。你

可以同時給許多人發(fā)送電子上郵一頁件下；一頁同返回1.1計算機介紹即時消息

即時消息就像與另一個人或者一群人進行實時交談一樣。當你打下并且發(fā)送一條即時消息時，所有參與者立刻會看到這條消息。與電子郵件不同，所有參與者必須在線(連接到因特網(wǎng)上)，并且同時坐在他們各自的計算機面前。

通過即時消息進行交流稱為聊天。圖片、音樂和電影如果你有一個數(shù)碼相機，你上就一頁可下以一頁把返回1.1計算機介紹

或者是從音樂網(wǎng)站上購買的歌曲。如果你的計算機有DVD播放器，那么你還可以看電影。游戲

你喜歡玩游戲嗎？在每種類型的上千個計算機游戲里你能夠進行娛樂。可以坐在一個賽車的方向盤后面、在土牢里與嚇人的生物戰(zhàn)斗或者控制文明世界和帝國。許多游戲允許你通過因特網(wǎng)和世界各地的玩家進行比賽上。一頁返回1.2開機與關機的資料

你通過打開或者關閉電源來開機或關機。開機

幾乎所有計算機的電源開關都被制作到前面，然而一些老式計算機的開關可能在機箱的后面。通常，在你打開計算機之后，它將會被啟動(或者載入啟動軟件和操作系統(tǒng))，并且將你帶到計算機的桌面(一個你能夠訪問計算機服務的地方)。下一頁

返回1.2開機與關機的資料選項)(Macintosh用戶：你除非單擊

Done或者OK按鈕繼續(xù)，否則你什么也做不了)。

(2)如果計算機提示你輸入密碼，如果你知道就輸入密碼并且單擊OK按鈕。

如果不需要密碼，單擊OK按鈕繼續(xù)。

假如不輸入密碼不能開機，你就需要

搞清密碼是什么了。關機當你退出程序并且準備關機上的一頁時下候一頁，返回1.2開機與關機的資料

你的計算機可能會顯示其他的信息，但是最終要做下列兩件事情之一：

(1)關閉計算機(包括電源)。你需要關閉任何需要關閉的設備(打印機、顯示器、音箱等)。

(2)屏幕上顯示可以關閉電源(或關機)之后，再關閉電源。你需要關閉任何

需要關閉的設備(打印機、顯示器、音箱等)。上一頁

返回PIC

1.1

Desktop

computer返回PIC

1.2

Laptop

computer返回PIC

1.3

Handheld

computer返回PIC

1.4

Tablet

PC返回Unit

2

Computer

HardwareUnit

2

Computer

Hardware第2單元計算機硬件Unit

2

Computer

Hardware

The

first

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the

Apple

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wasintroduced

in

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Since

then

a

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the

basics

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today’scomputer

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ove20

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ago.Computer

“Computer

hardware”refers

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comput下e一r頁,a返s回Unit

2

Computer

Hardware

CPU:

The

Central

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is

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performs

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the

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More

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Computer

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CD

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Useful

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CPU,which

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appli上c一a頁ti下o一n頁s,返回Unit

2

Computer

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Display

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most

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olaptops

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all

Windows-compat上i一b頁le下一頁返回Unit

2

Computer

HardwareMacintosh

computers

contain

CPUsmanufactured

by

IBM

or

Motorola

(68040,

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Most

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Pen上t一i頁um下4一頁CPU返,回Unit

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Computer

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However,

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le上a一s頁t下一頁

返回Unit

2

Computer

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Drive

Hard

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400

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driv上e一s頁ar下e一頁返回Unit

2

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the

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at

50Mb/sec

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IDE

(usually

used

to

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hard

drives)can上r一e頁ach下一頁返回Unit

2

Computer

Hardware

CD

drives

are

cheap

and

fast,

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in

reliability.

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drives,

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and

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on

many

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computers.

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drives

can

play

music

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more上e一x頁pen下s一i頁ve返t回haUnit

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Keyboards

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most

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Devices上一頁

下一頁

返回Unit

2

Computer

Hardware

The

size

of

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monitor

with1

200×800

resolution

has

a

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upon

which

to

display

imagesthan

a

monitor

with

800600

resolution.上一頁

下一頁

返回Unit

2

Computer

Hardware

Larger

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PC

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called

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term

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IBM-compatible

personalcomputers,

to

the

exclusion

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othertypes

of

personal

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asMacintoshes.In

recent

years,the

term

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Choosing

the

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performance

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onmany

factors,

only

one

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is

clockspeed.

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capacity

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the

firsthing

to

look

for,but

ther上e一頁are下一o頁the返r回Unit

2

Computer

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