lecture 01 - introduction.pptx

8/19/2019 Lecture 01 - Introduction.pptx

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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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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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(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


Figure 1-25


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)ainframes

• A mainframe is alarge! epensive!power"ul computer

that can hanlehunres orthousans o"connecte users

simultaneously


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


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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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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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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People

• People involve in a computer ,asesystem

• 3here are ,roa categories such as: – @sers*owners

– ;perators

– ystem /anagers

– 3echnicians! technical support

– Developers

lecture 01 - introduction.pptx

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