Introduction to Compuuter

8/14/2019 Introduction to Compuuter

1/41

A World of Computers

What is computer literacy? Knowledge and understanding

of computers and their uses

Computers are everywhere


2/41

How is a computer defined?

What Is a Computer?

Produces and stores results

Next

Electronic device operating under the control of

instructions stored in its own memory

Processes data intoinformationinformation

Data that is organized,meaningful, and useful

Acceptsdatadata

Raw facts, figures, andsymbols


3/41

What Is a Computer?

What is the information processing cycle?

Next

Input Process Output

Storage Communication


4/41

The Components of a Computer

What is an input device? Hardware used

to enter data

and instructions

Next


5/41


What is an output device?

Hardware that

conveys

information

to one or more

people

Next


6/41


What is the system unit?

Next

Case that contains

the electronic

components of the

computer that are

used to process data


7/41


8/41


What is storage?

Next

Holds data, instructions, and information

for future use


9/41


What is a USB flash drive?

Next

Portable storage device

Small and lightweight enoughto be transported on a keychain

or in a pocketThe average USB flash drive

can hold about 500 million

characters


10/41


What is a hard disk?

Next

Provides greater storage

capacity than a

USB flash drive

Most are housed inside

the system unit


11/41


What is a compact disc?

Next

Flat, round, portable metal disc

CD-ROM

DVD-ROM


12/41


What is a communications device?

Next

Hardware component that

enables a computer to

send and receive data, instructions,and information

Hardware component that

enables a computer to

send and receive data, instructions,and information

Occurs over cables, telephone

lines, cellular radio networks,satellites, and other

transmission media

Occurs over cables, telephone

lines, cellular radio networks,

satellites, and other

transmission media

Ad t d Di d t


13/41

Storage Communications

Advantages and Disadvantagesof Using Computers

What are the advantages of using computers?

Speed Reliability

Next

Consistency

Ad t d Di d t


14/41

Impact on

Labor Force

Advantages and Disadvantagesof Using Computers

What are the disadvantages of using computers?

Next

Violation of

Privacy

Health Risks

Public Safety

Impact on

Environment


15/41

Networks and the Internet

What is a network?

Next

Collection of computers and devices connected together

Used to shareUsed to share

ResourcesResources

Hardware

devices

Hardware

devicesSoftware

programs

Software

programs

DataDataSaves

time

and

money

Saves

time

and

moneyInformationInformation


16/41


What is a server?

Next

A server controls

access to resources

on a network Clients, or workstations,

request resources from theserver


17/41


What is the Internet?

Next

Worldwide collection of networks that connects

millions of businesses, government agencies, educational institutions, and

individuals


18/41


Why do users access the Internet?

2. Information

3. Shopping

4. Banking and Investing5. Classes

6. Entertainment

Next

1. Communications

7. Download Music

8. Share Information


19/41


20/41

Consists of a series

of instructions that

tells the computer

what to do and

how to do it

Computer Software

What is software?

Next

Also called a

program


21/41

Computer Software

What is a graphical user interface (GUI)?

Next

Allows you to

interact with the

software using text,

graphics, and visual

images such as icons

Controls how you

enter data and

instructions and how

the screen displays

information


22/41

Computer Software

What issystem software?

Operating System (OS)Operating System (OS)is a set of programs

that coordinates all

activities among

computer hardwaredevices

Operating System (OS)Operating System (OS)is a set of programs

that coordinates all

activities among

computer hardwaredevices Utility ProgramsUtility Programs allow the user toperform maintenance-type tasks

usually related to managing a

computer, its devices or its programs

Utility ProgramsUtility Programsallow the user toperform maintenance-type tasks

usually related to managing a

computer, its devices or its programs

Next

Programs that control or maintain the operations of the

computer and its devices


23/41

Computer Software

What isapplication software?

Next

Presentation

Graphics

Spreadsheet

Database

Word

Processing

Programs designed to make

users more productive


24/41

Categories of Computers

Next

What are the categories of computers?

Personal Computers

(desktop)

Mobile Computers and

Mobile Devices

Game Consoles

Servers

Mainframes

Supercomputers

Embedded Computers


25/41

Personal Computers

What are the two most popular styles ofpersonal

computers?

Next

PC and compatibles

use the Windows

operating system

Apple Macintosh

usually uses the

Macintosh operatingsystem (Mac OS X)


26/41

Personal Computers

What is adesktop computer?

Next

Designed so all of the components fit entirely on or

under a desk or table

o e ompu ers an o e


27/41

o e ompu ers an o eDevices

What is anotebook computer?

Next

Portable, small enough to fit on

your lap

Also called a laptop computer

Usually more expensive than a

desktop computer with equal

capabilities

o e ompu ers an o e


28/41


What is aTablet PC?

Next

Especially useful for taking

notes

Resembles a letter-sized slate Allows you to write on the screen using a digital pen

o e ompu ers an o e


29/41


What are mobile devices?

Next

Internet-enabled

telephone is a

smart phone

Small enough to

carry in a pocket

o e ompu ers an o e


30/41


What is ahandheld computer?

Next

Used

by mobile

employees such as

meter readers and

delivery people

Small

enough to fit

in onehand

o e ompu ers an o e


31/41


What is apersonal digital assistant (PDA)?

Next

Provides personal organizer functions

Calendar

Appointment book

Address book Calculator

Notepad

o e ompu ers an o e


32/41


What aresmart phones?

Next

A smart phone is

an Internet-enabled

telephone that usually

provides PDA capabilities

G C l


33/41

Game Consoles

What aregame consoles?

Next

Mobile computing device designed for

single-player or multiplayer video games

E b dd d C t


34/41

Embedded Computers

What is an embedded computer?

A special-purpose computer that functions as acomponent in a larger product

Next

emen s o an n orma on


35/41

emen s o an n orma onSystem

What are information system elements?

Next

Hardware

Software

Data

People

Procedures

E l f C t U


36/41

Examples of Computer Usage

What software is available for a home user?

Next

Personal finance management

Web access

Communications

Entertainment

E l f C t U


37/41


Productivity

software Specialty

software Web usage E-mail

Next

What software is available for a small

office/home office (SOHO) user?

E l f C t U


38/41

Hardware Notebook computers Tablet PCs

Internet-enabled PDAs Smart phones


What is available for

a mobile user?

Software Word processing

Spreadsheet

Presentation graphics

software

Next

E l f C t U


39/41


What are the needs of a power user?

Next

Speed and large amounts of storage

Types of power users

Engineers

Scientists

Architects

Desktop publishers

Graphic artists

E l f C t U


40/41


What are the needs of the large business user?

Next

Payroll

Inventory

E-commerce

Desktop publishing

ompu er pp ca ons n


41/41

ompu er pp ca ons nSociety

What are some examples

of computer applications

in society?

N t

Education Finance

Government Health Care Science

Publishing

Travel Manufacturing

Introduction to Compuuter

Documents

Transcript of Introduction to Compuuter