�ݺ�ߣ

Discovering Computers Chapter 1
Discovering Computers
& Microsoft Office 2010

Objectives Overview
Explain why computer
literacy is vital to
success in today's world
Describe the five
components of a
computer
Discuss the advantages
and disadvantages that
users experience when
working with
computers
Discuss the uses of the
Internet and World
Wide Web
Distinguish between
system software and
application software
Discovering Computers & Microsoft Office 2010:
2See Page 1
for Detailed Objectives

Objectives Overview
Differentiate among types,
sizes, and functions of
computers in each category
Explain how home users,
small office/home office
users, mobile users, power
users, and enterprise users
each interact with
computers
Discuss how society uses
computers in education,
finance, government, health
care, science, publishing,
travel, and manufacturing
3See Page 1
for Detailed Objectives

A World of Computers
? Computers are everywhere
4Pages 2 - 3
Figure 1-1

What Is a Computer?
? A computer is an electronic device, operating
under the control of instructions stored in its own
memory
5Pages 3 - 4
Collects
data
(input)
Processing
Produces
information
(output)
Information Processing Cycle

What Is a Computer?
6Page 4
Figure 1-2

The Components of a Computer
? A computer contains many electric, electronic, and
mechanical components known as hardware
7Pages 4 - 7
? Allows you to enter data and instructions into a computerInput Device
? Hardware component that conveys information to one or more peopleOutput Device
? Case that contains the electronic components of the computer that
are used to process dataSystem Unit
? Holds data, instructions, and information for future useStorage Device
? Enables a computer to send and receive data, instructions, and
information to and from one or more computers or mobile devices
Communications
Device

The Components of a Computer
8Page 5
Figure 1-3

Advantages and Disadvantages
of Using Computers
Advantages of
Using Computers
Disadvantages of
Using Computers
9
Speed
Reliability
Consistency
Storage
Communications
Violation of Privacy
Public Safety
Impact on Labor Force
Health Risks
Impact on Environment
Page 7

Advantages and Disadvantages
of Using Computers
? Green computing involves reducing the electricity
consumed and environmental waste generated when
using a computer
? Strategies include:
�C Recycling
�C Regulating manufacturing processes
�C Extending the life of computers
�C Immediately donating or properly disposing of replaced computers
10Page 7

Networks and the Internet
? A network is a collection of computers and devices
connected together, often wirelessly, via communications
devices and transmission media
? The Internet is a worldwide collection of networks that
connects millions of businesses, government agencies,
educational institutions, and individuals
11Page 8

12Page 8
Figure 1-6

? People use the Internet for a variety of reasons:
13Pages 8 - 9
Figure 1-7
Communicate Research and
Access Information
Shop Bank and Invest Online Trading
Entertainment Share Information Download Videos Web Application

? A social networking Web site encourages
members to share their interests, ideas, stories,
photos, music, and videos with other registered
users
�C Also called an online social network
14Page 10

Computer Software
? Software, also called a program, tells the
computer what tasks to perform and how to
perform them
15Pages 11 - 12
Figures 1-8 - 1-9
System Software
? Operating system
? Utility program
Application Software

Computer Software
? Installing is the process of setting up software to
work with the computer, printer, and other
hardware
16Pages 12 - 13
Figure 1-10

Computer Software
? A programmer develops software or writes the
instructions that direct the computer to process
data into information
17Page 13
Figure 1-11

Categories of Computers
Embedded computers
Supercomputers
Mainframes
Servers
Game consoles
Mobile computers and mobile devices
Personal computers
18Pages 14 - 15

Personal Computers
? A personal computer can perform all of its input,
processing, output, and storage activities by itself
? Two popular architectures are the PC and the
Apple
�C Desktop computer
19Pages 15 - 16
Figures 1-13 - 1-14

Mobile Computers and Mobile Devices
Personal computer you
can carry from place to
place
Examples include
notebook computers,
laptop computers,
netbooks, and Tablet
PCs
Mobile
Computer
Computing device small
enough to hold in your
hand
Examples include smart
phones and, PDAs, e-
book readers, handheld
computers, portable
media players, and
digital cameras
Mobile
Device
20Pages 16 - 18

Notebook computer
Tablet PC
Smart phones and PDAs
E-book reader
21Pages 16 - 17
Figures 1-15 �C 1-18

Handheld computer
Portable media player
Digital camera
22Pages 17 - 18

Game Consoles
? A game console is a mobile computing device
designed for single-player or multiplayer video
games
23Page 18
Figure 1-21

Servers
? A server controls access to the hardware,
software, and other resources on a network
�C Provides a centralized storage area for programs, data,
and information
24Page 19
Figure 1-22

Mainframes
? A mainframe is a large, expensive, powerful
computer that can handle hundreds or thousands
of connected users simultaneously
25Page 19
Figure 1-23

Supercomputers
? A supercomputer is the fastest, most powerful
computer
�C Fastest supercomputers are capable of processing
more than one quadrillion instructions in a single
second
26Page 19
Figure 1-24

Embedded Computers
? An embedded computer is a special-purpose
computer that functions as a component in a
larger product
27Page 19
Consumer Electronics
Home Automation Devices
Automobiles
Process Controllers and Robotics
Computer Devices and Office
Machines

Embedded Computers
28Page 20
Figure 1-25

Examples of Computer Usage
Home User
?Personal financial
management
?Web access
?Communications
?Entertainment
Small Office/Home
Office User
?Look up information
?Send and receive e-mail
messages
?Make telephone calls
Mobile User
?Connect to other computers
on a network or the Internet
?Transfer information
?Play video games
?Listen to music
?Watch movies
29Pages 20 �C 23

Examples of Computer Usage
Power User
? Work with
multimedia
? Use industry-specific
software
Enterprise User
? Communicate
among employees
? Process high
volumes of
transactions
? Blog
30Pages 23 �C 24

Computer Applications in Society
Education
Finance
Government
Health Care
31Pages 24 -26

Computer Applications in Society
Science
Publishing
Travel
Manufacturing
32Pages 26-27

Summary
Basic computer
concepts
Components of a
computer
Networks, the Internet,
and computer software
Many different
categories of
computers, computer
users, and computer
applications in society
33Page 28

Discovering Computers
& Microsoft Office 2010
Complete

�ݺ�ߣ

DTCC Chapter 1 - Introduction to Computers

More Related Content

DTCC Chapter 1 - Introduction to Computers