Different Types of Computer

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Group #2Presentation


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Diferent Types o

Computer


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Types o Computer

Analog Computers

These are almost extinct today. Theseare diferent rom a digital computerecause an analog computer canperorm se!eral mathematicaloperations simultaneously. "t uses

continuous !ariales ormathematical operations and utiliesmechanical or electrical energy.


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$nalog Computer


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Types o Computer

Digital ComputersThey use digital circuits and are designed to operate

on t%o states& namely its ' and (. They areanalogous to states )* and )++. Data on these

computers is represented as a series o 's and(s.Digital computers are suitale or complexcomputation and ha!e higher processing speeds.They are programmale. Digital computers are either

general purpose computers or special purpose ones.General purpose computers& as their name suggests&are designed or speci,c types o data processing%hile general purpose computers are meant orgeneral use.


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Types o Computer

yrid Computers

These computers are a comination ooth digital and analog computers. "nthis type o computers& the digitalsegments perorm process control ycon!ersion o analog signals to

digital ones.


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yrid Computers


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Types o Computer

ainrame Computers

-arge organiations use mainrames orhighly critical applications such asul3 data processing and 01P. ost othe mainrame computers ha!ecapacities to host multiple operating

systems and operate as a numer o!irtual machines. They can sustituteor se!eral small ser!ers.


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ainrame Computer


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Types o Computer

icrocomputers $ computer %ith a microprocessor

and its central processing unit is3no%n as a microcomputer. They donot occupy space as much asmainrames do. 4hen supplemented%ith a 3eyoard and a mouse&microcomputers can e calledpersonal computers.


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$ monitor& a 3eyoard and other

similar input5output de!ices&computer memory in the orm o1$ and a po%er supply unit come

pac3aged in a microcomputer. Thesecomputers can ,t on des3s or talesand pro!e to e the est choice orsingle5user tas3s.


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icro Computer


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Types o Personal Computers

Desktops

- "n des3top models the monitor sittingon the top o the computer. "n earlydays li3e "8 PC %ere des3top models%hich cases are horiontally oriented.Des3top models are limited to three

internal mass storage de!ices. Thesemodels are !ery small and reerred toas slimline models.


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Laptops

$ laptop computer is a type o personalcomputers. "n laptop computers& including a

3eyoard& touchpad& display screen andspea3ers compiled into a single unit. "t ispo%ered y electricity !ia an $C adapter%hereas -aptops are also called noteoo3computers or noteoo3s. The ,rst computerdescried as laptop released in (:;< y anuel+ernande that %as too ul3y in sie utassumed as portale one at that time.


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Notebooks

*oteoo3s computers are !ery light in %eight ascompare to laptop computers. "ts %eight is lessthan six pounds and placed it easily in riecase.

The asic diference et%een the personalcomputer and noteoo3s is display screen. "nnoteoo3 computers use =at panel technologies toproduce non5ul3y display screen. " %e tal3 aout

computing po%er& modern noteoo3 computers arenearly e>ui!alent to personal computers. *oteoo3computers are more expensi!e than regular siedcomputers.


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Netbooks "t is an inormal classi,cation o personal

computers. 8ut %hen talet PCs are coming inmar3et netoo3s are less common. *etoo3sha!e ranged sie o ? inch screen diagonal andits %eight is approx one 3g or 2 to < pounds.

The netoo3s trend came rom Toshia %holaunched the -iretto @ inch netoo3 %hose

%eight is ;A'g in early (::@ then $sus made,rst netoo3 it is sold o!er


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*et8oo3s


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Tablet PC

"t is a moile computer %hich is larger than PD$ or amoile phone. Talet computer integrated %ith touchscreen rather than using physical 3eyoard and also

using digital pen. "n talet PC you can get a lot ounctions li3e cell phone unctions& %ireless internet&GP7 na!igation and a !ideo camera. "ts %eight is !ariesrom ( to (.? 3g. "ts attery lie is three to ten hours."n2'''s icrosot attempted to ma3e a icrosot Talet

Pc ut it is ailed ecause o high cost. 8ut in $pril 2'('$pple "nc. released the iPad %hich is lo% in cost andincreased usaility as %ell as attery lie.


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T$8-0T PC


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Personal Digital Assistant (PDA)

PD$ or Personal Digital $ssistant is a de!ice %hich cancomines Telephone& ax& computing as %ell as

net%or3ing eatures. The asic unctions o PD$s are asa moile phone& email sender& ax sender& and personalorganier. ost PD$s are pen5ased rather than a3eyoard or input. The ,rst PD$ *e%ton essage Padlaunched y $pple in (::


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Computer Peripherals

The de!ice %hich is connected to a hostcomputer& ut not part o it is called

peripheral de!ice. These are also calledinput or output de!ices. "nput& )utput 7torage are main types o computerperipherals. $ de!ice such as eadphones&

oystic3s& 9eyoards& onitors& ouse&7pea3ers& /78 Gadgets& /78 us&4ecams are 3no%n as Peripherals De!ices.


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$d!antages andDisad!antages o

Computer


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$d!antages

Computer has made a !ery !ital impacton society. "t has changed the %ay o lie.The use o computer technology has

afected e!ery ,eld o lie. People areusing computers to perorm diferenttas3s >uic3ly and easily. The use ocomputers ma3es diferent tas3 easier. "t

also sa!es time and efort and reducesthe o!erall cost to complete a particulartas3.


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$d!antages

Computer can e used as a greateducational tool. 7tudents can ha!e accessto all sort o inormation on the internet.

7ome great %esites li3e 4i3ipedia& 9hanEs$cademy& Code $cademy& 8yte5*otespro!ides ree resources or students proessionals.

oreo!er& the computer is eing used ine!ery ,eld o lie such as medical& usiness&industry& airline and %eather orecasting.


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Disad!antages

The use o computer has also createdsome prolems in society %hich areas ollo%s.

Unemployment

Diferent tas3s are perormedautomatically y using computers. "t

reduces the need o people andincreases unemployment in society.


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Disad!antages

astage o! time an" energy

any people use computers %ithout positi!e

purpose. They play games and chat or a long

period o time. "t causes %astage o time andenergy. 6oung generation is no% spendingmore time on the social media %esites li3e+aceoo3& T%itter etc or texting their riends

all night through smartphones %hich is ador oth studies and their health. $nd it alsohas ad!erse efects on the social lie.


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Disad!antages

Data #e$urity

The data stored on a computer can eaccessed y unauthoried persons through

net%or3s. "t has created serious prolems orthe data security.

Computer Crimes

People use the computer or negati!e

acti!ities. They hac3 the credit card numerso the people and misuse them or they cansteal important data rom ig organiations.


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Disad!antages

Pri%a$y &iolation

The computers are used to storepersonal data o the people. Thepri!acy o a person can e !iolated ithe personal and con,dential recordsare not protected properly.


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Disad!antages

'ealth risks

The improper and prolonged use ocomputer can results in inFuries or

disorders o hands& %rists& elo%s& eyes&nec3s and ac3. The users can a!oidhealth ris3s y using the computer inproper position. They must also ta3eregular rea3s %hile using the computeror longer period o time. "t isrecommended to ta3e a couple o

minutes rea3 ater


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Disad!antages

mpa$t on n%ironment The computer manuacturing processes and

computer %aste are polluting theen!ironment. The %asted parts o computer

can release dangerous toxic materials. Greencomputer is a method to reduce the electricityconsumed and en!ironmental %astegenerated %hen using a computer. "t includes

recycling and regulating manuacturingprocesses. The used computers must edonated or disposed of properly.


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Components o!

Central Pro$essingUnit*


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$ typical CP/ has a numer o components.

+irst is the arithmetic logic unit $-/H %hichperorms simple arithmetic and logicaloperations.

7econd is the control unit C/H %hich managesthe !arious components o the computer. "treads and interprets instructions rom memoryand transorms them into a series o signals to

acti!ate other parts o the computer. Thecontrol unit calls upon the arithmetic logic unitto perorm the necessary calculations.


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. Third is the cache& %hich ser!es as high5speedmemory %here instructions can e copied to and

retrie!ed.

0arly CP/s consisted o many separatecomponents& ut since the (:I's they ha!e een

constructed as a single integrated unit called ami$ropro$essor.

$s such& a CP/ is a speci,c type o microprocessor.The indi!idual components o a CP/ ha!e ecomeso integrated that you canJt e!en recognie themrom the outside. The CP/ sho%n elo% is aout 2inches y 2 inches in sie.


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The cloc3 rate o a processor isthe speed at %hich instructionsare executed.


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Documents

Different Types of Computer