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orangesvetElectronics - Devices

Nov 8, 2013 (3 years and 11 months ago)

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College of Computer and Information Science

Chapter 1

Information Technology,
The Internet, and You

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Key Words & Terms


application software:
应用软件


basic application:
基本应用软件


communication device:
通讯设备


compact disc

CD

:
紧凑格式盘


computer competency:
计算机技能


connectivity:
连通
,
连通性


data:
数据


database file:
数据库文件


desktop computer:
台式计算机


digital versatile (video) disc: DVD,
数字式通用盘


document file:
文档文件


end user:
终端用户


floppy disk:
软盘

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Key Words & Terms


handheld computer:
手提电脑



hard disk:
硬盘


hardware:
硬件


high definition (hi def):
高清
(
高清晰度
)


information:
信息


information system:
信息系统


information technology (IT) :
信息技术


input device:
输入设备


Internet:
互联网


keyboard:
键盘


mainframe computer:
大型机


memory:
内存


microcomputer:
微型计算机


microprocessor:
微处理器

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Key Words & Terms



midrange computer:
中型机



minicomputer:
小型机



modem (modulator & demodulator):
调制解调器




monitor:
监视器



mouse:
鼠标



network:
网络



notebook computer:
笔记本电脑



operating system (OS):
操作系统



optical disk:
光盘



output device:
输出设备



palm computer:
掌上电脑



personal digital assistant (PDA):
个人数字化助理



presentation file:
演示文稿



primary storage:
主存



printer:
打印机

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Key Words & Terms



procedures:
过程
/
用户文档



program:
程序



random access memory (RAM):
可读写内存



secondary storage device:
辅助存储设备



software:
软件



specialized application:
专用应用软件



supercomputer:
超级计算机




system software:
系统软件



system unit:
系统单元



tablet PC:
带手写板的笔记本电脑



utility:
工具软件



Web:




wireless revolution:
无线(通讯)革命



worksheet file:
工作表文件


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Competencies

(Page 1 of 2)



Explain the five parts of an
information system
:
people
, procedures,
software
,
hardware
, and
data
.


Distinguish between system software and
application software.


Discuss the three kinds of
system software

programs.


Distinguish between basic and
specialized
application

software.


Identify the four types of computers and the four
type of
microcomputers
.

Page 2

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Competencies

(Page 2 of 2)


Describe the different types of computer
hardware including the
system unit
, input, output,
storage, and
communication devices
.


Define data and describe document, worksheet,
database, and
presentation files
.


Explain computer
connectivity
, the
wireless
revolution
, and the
Internet
.


Page 2

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Introduction


Computer competency

refers to acquiring computer
-
related skills


Microcomputers are common tools in all areas of life


New forms of learning have developed


New ways to communicate, to find people with
similar interests, and to buy goods are available.

Page 3

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Five Parts of an Information
System

1.
People

2.
Procedures

3.
Software

4.
Hardware

5.
Data

Page 4

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People


Most important part of any system


Contact is …


Direct


Indirect


Computer uses


Business & Entertainment


Education & Medicine

Page 6

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Software


AKA Programs


Two major kinds of software


System Software


Application Software

Page 7

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Hardware
-

Types of Computers


Supercomputers


Mainframe computers


Minicomputers (also


known as mid
-
range


computers)


Microcomputers


Page 10

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Microcomputer Types


Desktop



Notebook or laptop



Tablet PC




Handheld

Page 11

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Microcomputer Hardware


Four basic categories of equipment:


System Unit


Input/Output


Secondary Storage


Communication

Page 11

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System Unit


Two important components


Microprocessor


Memory

Page 12

Return

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Input/Output Devices


Common input devices are the
keyboard

and the
mouse


Common
output devices

are printers and
monitors

Page 12

Return

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Secondary Storage

Page 13

Return


Unlike memory, secondary storage
holds data and programs even if
electrical power is not available


The most important types of secondary
media are
floppy
,
hard
, and
optical
disks



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Communications

Page 13


Communication Devices provide microcomputers
with the ability to communicate with other computer
systems across the globe


The
modem

is the most widely used communication
device


Modems modify telephone communications into a
form that can be processed by a computer


Modems also modify computer output into a form
that can be transmitted across standard telephone
lines



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Data


Raw, unprocessed facts


Processed data becomes information


Stored electronically in files


Document files


Worksheet files


Database files


Presentation files

Page 14

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Connectivity, the Wireless
Revolution, and the Internet


Connectivity


Sharing of information


Wireless

communication is
becoming popular


Computer

networks


Connected
communication
system of computers


Largest
network

is the
Internet

Page 15

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Careers In IT


For a complete listing of
careers, visit
www.computing2008.com

keyword: careers


Page 16

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Discussion Questions

(Page 1 of 2)



Explain the five parts of an information system. What
part do people play in this system?



What is system software? What kinds of programs are
included in system software?



Define and compare basic and specialized application
software. Describe some different types of basic
applications. Describe some types of specialized
applications.

Page 24

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Describe the different types of computers. What is
the most common type? What are the types of
microcomputers?



What is connectivity? How are the wireless
revolution and connectivity related? What is a
computer network? What is the Internet? What is the
Web?

Page 24

Discussion Questions

(Page 2 of 2)


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Crossword Puzzle Answers:


Across

Num.

Clue

Answer

1

The most essential part of an
information system.

People

7

Coordinates computer resources.

Operating System

10

Modifies signals for processing.

Modem

12

Data that has been processed by
the computer.

Information

13

Unprocessed facts.

Data

14

Notebook computer that accepts
handwritten input..

Tablet PC

Down

Nu
m
.

Clue

Answer

2

Uses computers to become more
productive.

End User

3

Rules or guidelines to follow
when using software,
hardware, and data.

Procedures

4

Created by word processors.

Document Files

5

Specialized programs that allow
input and output devices to
communicate.

Device Drivers

6

Created by database management
programs.

Database Files

8

The physical equipment of a
microcomputer.

Hardware

9

The world’s largest computer
network.

Internet

11

Provides step
-
by
-
step instructions
to the computer.

Software

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Answers for Multiple Choice and Matching

Num

Multiple Choice Answers

Matching Answers

1

B

E

2

B

F

3

A

I

4

B

H

5

D

A

6

D

C

7

A

G

8

C

B

9

D

D

10

D

J


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The End of Chapter 1