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Your Interactive Guide
to the Digital World
Discovering
Computers 2012
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A World of Computers
• Computers are everywhere
Discovering Computers 2012: Chapter 1 2Pages 4 - 5
Figure 1-1
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The Components of aComputer
• A computer contains many electric! electronic!an mechanical components &nown ashardware
Discovering Computers 2012: Chapter 1 5Pages # - '
• Allows you to enter ata an instructions into a computerInput e!ice
• (arware component that conveys in"ormation to one ormore people
"utpute!ice
• Case that contains the electronic components o" thecomputer that are use to process ata#ystem $nit
• )ecors $writes% an*or retrieves $reas% items to an "romstorage meia
#toragee!ice
• +na,les a computer to sen an receive ata! instructions!an in"ormation to an "rom one or more computers ormo,ile evices
Communications e!ice
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The Components of aComputer
Discovering Computers 2012: Chapter 1 %Page
Figure 1-.
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Types of Computers
Personal computers
/o,ile computers an mo,ileevices
ame consoles
ervers
/ain"rames
upercomputers
+m,ee computers
Discovering Computers 2012: Chapter 1 &Page 1
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Personal Computers
• A personal computer can per"orm all o"its input! processing! output! an storageactivities ,y itsel"
• 3wo popular architectures are the PC anthe Apple – es'top computer
Discovering Computers 2012: Chapter 1 (Pages 1 - 20
Figures 1-15 - 1-1#
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)o*ile Computers and )o*ilee!ices
Personal computeryou can carry "romplace to place
+amples incluenote*oo'
computers!laptopcomputers!net,oo&s! ultra-thins! an Ta*letPCs
)o*ileCompu
terComputing evicesmall enough tohol in your han
+amples incluesmart phones an
PAs! e+*oo'readers!handheldcomputers!porta*le mediaplayers! andigital cameras
)o*ilee!ice
Discovering Computers 2012: Chapter 1 ,Pages 20 - 2.
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)o*ile Computers and )o*ilee!ices
ote,oo& computer
3a,let PCmart phones an
PDAs
+-,oo& reaer
Discovering Computers 2012: Chapter 1 -.Pages 20 - 22
Figures 1-1 6 1-20
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)o*ile Computers and )o*ilee!ices
(anhelcomputer
Porta,le meiaplayer
Digital camera
Discovering Computers 2012: Chapter 1 --Pages 22 - 2.
Figures 1-21 6 1-2.
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/ame Consoles
• A game console is a mo,ile computingevice esigne "or single-player ormultiplayer vieo games
Discovering Computers 2012: Chapter 1 -2Page 24
Figure 1-24
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#er!ers
• A ser!er controlsaccess to theharware! so"tware!
an other resourceson a networ& – Provies a centrali7e
storage area "or
programs! ata! anin"ormation
Discovering Computers 2012: Chapter 1 -3Page 25
Figure 1-25
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)ainframes
• A mainframe is alarge! epensive!power"ul computer
that can hanlehunres orthousans o"connecte users
simultaneously
Discovering Computers 2012: Chapter 1 -4Page 25
Figure 1-2#
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#upercomputers
• A supercomputer is the "astest! mostpower"ul computer – Fastest supercomputers are capa,le o"
processing more than one 8uarillioninstructions in a single secon
Discovering Computers 2012: Chapter 1 -5Page 25
Figure 1-2
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0m*edded Computers
• An em*edded computer is a special-purpose computer that "unctions as acomponent in a larger prouct
Discovering Computers 2012: Chapter 1 -%Page 2#
Consumer+lectronics
• /o,ile anigitaltelephones
• Digital
televisions• Cameras• 9ieo
recorers• D9D players
an recorers• Answering
machines
(omeAutomation
Devices
• 3hermostats• prin&lingsystems
• ecurity
monitoringsystems• Appliances• ights
Automo,iles
• Antiloc&,ra&es
• +ngine controlmoules
•
Air,agcontroller• Cruise control
ProcessControllers an
)o,otics
• )emotemonitoringsystems
• Power
monitors• /achinecontrollers
• /eicalevices
ComputerDevices an;
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0m*edded Computers
Discovering Computers 2012: Chapter 1 -&Page 2#
Figure 1-2'
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0lements of a computer*ased systems
Data o"tware (arware
Proceure
s
Connectiv
ity People
Discovering Computers 2012: Chapter 1 -(Page 2
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-,Discovering Computers 2012: Chapter 1
• Data is a collection o" unorganise "acts!unprocesse items! which can inclue:
– etters! num,ers
– ine thic&ness! magnetic strips
• Data is an input in the >n"ormationProcessing Cycle
ata
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2.Discovering Computers 2012: Chapter 1
Information
• >n"ormation is ata organise an givenmeaning! which can inclue:
– 3he letter! report! essay orspreasheet
– 3he tet printe on the sales oc&et
Data Processing Information
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2-Discovering Computers 2012: Chapter 1
#oftware
• o"tware also calle program
• o"tware inclues all the instructionsthat tell the computer what to oan how to o
• o"tware is the computer
programming that ma&es thecomputer wor&
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22Discovering Computers 2012: Chapter 1
1ardware
• 3he physical things that ma&e up acomputer system:
– ystem unit
– /onitor – =ey,oar an mouse
– Ca,les
– Printers – An so on
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23Discovering Computers 2012: Chapter 1
Procedures
• Proceures are the steps that must ,e"ollowe to complete a particularcomputer relate tas& such as:
– >nstructions
– /anuals
– ;n-line help
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24Discovering Computers 2012: Chapter 1
Connecti!ity
• o much ,usiness is now ,ase uponnetwor&s?
• etwor&s ena,le (umans! computers!other evices connecte! communicatingan wor&ing together
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25Discovering Computers 2012: Chapter 1
People
• People involve in a computer ,asesystem
• 3here are ,roa categories such as: – @sers*owners
– ;perators
– ystem /anagers
– 3echnicians! technical support
– Developers