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7/26/2019 Chapter 01.pptx
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Your Interactive Guide
to the Digital World
Discovering
Computers 2012
Chapter 1
Basic Introduction to Computers
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Objectives Overview
Explain whycomputer literacy
is vital to successin todays world
Defne the term,computer, anddescribe the
relationshipbetween data andinormation
Describe the fvecomponents o a
computer
Discuss theadvantages and
disadvantages thatusers experiencewhen working with
computers
Defne the term,network, and
identiy benefts osharing resources
on a network
Discuss the uses othe Internet andWorld Wide Web
Discovering omputers !"#!$ hapter # 2%ee &age '
or Detailed (b)ectives
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Objectives Overview
Distinguish betweensystem sotware and
application sotware
Di*erentiate amongtypes, si+es, and
unctions o
computers in eachcategory
Describe the role oeach element in an
inormation system
Explain how homeusers, small
oce-home oce
users, mobile users,power users, and
enterprise users eachinteract withcomputers
Discuss how societyuses computers ineducation, fnance,government, health
care, science,publishing, travel, and
manuacturing
Discovering omputers !"#!$ hapter # 3%ee &age '
or Detailed (b)ectives
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A World of Computers
omputers are everywhere
Discovering omputers !"#!$ hapter # 4&ages . / 0
1igure #/#
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What Is a Computer?
2 computeris an electronic device,operating under the control oinstructions stored in its own memory
Discovering omputers !"#!$ hapter # 5&age 3
ollectsdata4input5
&rocessing
&roducesinformat
ion
4output5
Information rocessin! C"cle
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What Is a Computer?
Discovering omputers !"#!$ hapter # #&age 3
1igure #/!
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$he Components of aComputer
2 computer contains many electric, electronic,and mechanical components known ashardware
Discovering omputers !"#!$ hapter # %&ages 3 / 6
2llows you to enter data and instructions into a computerInput &evice
7ardware component that conveys inormation to one ormore people
Output&evice
ase that contains the electronic components o thecomputer that are used to process data'"stem (nit
8ecords 4writes5 and-or retrieves 4reads5 items to and romstorage media
'tora!e&evice
Enables a computer to send and receive data, instructions,and inormation to and rom one or more computers ormobile devices
Communications &evice
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$he Components of aComputer
Discovering omputers !"#!$ hapter # )&age 9
1igure #/'
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Advanta!es and &isadvanta!esof (sin! Computers
Advanta!es of(sin! Computers
&isadvanta!es of(sin! Computers
Discovering omputers !"#!$ hapter # *
%peed
8eliability
onsistency
%torage
ommunications
7ealth 8isks
:iolation o &rivacy
&ublic %aety
Impact on ;abor1orce
Impact onEnvironment
&ages < / #"
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Advanta!es and &isadvanta!esof (sin! Computers
+reen computin!involves reducing theelectricity consumed and environmentalwaste generated when using a computer
%trategies include$ 8ecycling
8egulating manuacturing processes
Extending the lie o computers
Immediately donating or properly disposing o replacedcomputers
Discovering omputers !"#!$ hapter # ,-&age #"
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.etwor/s and the Internet
2 networ/is acollection ocomputers and
devices connectedtogether, otenwirelessly, viacommunications
devices andtransmission media
Discovering omputers !"#!$ hapter # ,,&ages #" / ##
1igure #/3
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.etwor/s and the Internet
=he Internet is a worldwide collection onetworks that connects millions o businesses,government agencies, educational
institutions, and individuals
Discovering omputers !"#!$ hapter # ,2&age ##
1igure #/9
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.etwor/s and the Internet
&eople use the Internet or a variety oreasons$
Discovering omputers !"#!$ hapter # ,3&ages #! / #'
1igure #/6
Communicate 0esearch andAccess
Information
'hop 1an/ andInvest
Online$radin!
ntertainment
&ownloadideos
'hareInformation
WebApplication
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.etwor/s and the Internet
2 social networ/in! Web siteencourages members to share theirinterests, ideas, stories, photos, music,
and videos with other registered users
Discovering omputers !"#!$ hapter # ,4&age #.
1igure #/<
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Computer 'oftware
'oftware, also called a pro!ram, tellsthe computer what tasks to perorm andhow to perorm them
Discovering omputers !"#!$ hapter # ,5&ages #0 / #3
1igures #/#" / #/##
'"stem 'oftware (perating system >tility program
Application 'oftware
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Computer 'oftware
Installin!is the process o setting upsotware to work with the computer,printer, and other hardware
Discovering omputers !"#!$ hapter # ,#&ages #3 / #9
1igure #/#!
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Computer 'oftware
2 programmerdevelops sotwareor writes the
instructions thatdirect thecomputer toprocess data into
inormation
Discovering omputers !"#!$ hapter # ,%&age #6
1igure #/#'
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Cate!ories of Computers
Embedded computers
%upercomputers
?ainrames
%ervers
@ame consoles
?obile computers and mobile devices
&ersonal computers
Discovering omputers !"#!$ hapter # ,)&age #