Introduce Computer System Grade 9 TLE - ICT

How to Use this Module............................................................................. ................................................................................... 1 Introduction................................... Introduction....................................................................... ............................................................ ........................ Pre-T Pre-Test................................ est.................................................................... ..................................................................... ................................. Defnition o Terms...................................................... erms..................................................................... ............................ ............... Learning Learning Outcome 1 Introduce the !om"uter #$stem............................. Inormation #heet 1.1T$"es 1.1T$"es o !om"uter............................... !om"uter............................................ ............... #el !hec% 1.1................................ 1.1.................................................................... ..................................................... ................... Inormation #heet 1.& !om"uter !om"onents and its !haracteristics........................................................................................ 'cti(it$ #heet 1.& ................................. .................................................................... ................................... #el !hec% 1.&................................ 1.&.................................................................... ..................................................... ................... Inormation #heet 1.& Distinguishing Hardware Hardware and and #otware #otware )elationshi"............................... )elationshi"................................................................. ............................................. ........... 'cti(it$ 1.*............................. 1.*................................................................. .............................................................. .......................... Learning Learning Outcome & Identi$ o com"uter "arts and its "eri"herals ................................. ..................................................................... ........................................................... ....................... Inormation #heet &.1 Personal Personal Protecti(e Protecti(e +,ui"ment........................ #el !hec% &.1................................ &.1.................................................................... ................................................... ................. .. Inormation #heet &.& Hand Tools............................. ools.................................................... .......................... ... 'cti(it$ #heet &.&............................ &.&................................................................ ..................................................... ................. Inormation #heet &.*............................... &.*...................................................................... ....................................... .... 'cti(it$ #heet &.*............................ &.*................................................................ ..................................................... ................. #el !hec% &.*................................ &.*.................................................................... ..................................................... ................... Learning Learning Outcome * Maintain !om"uter Hardware............................... Hardware............................... Inormation #heet *.1 Maintain com"uter #$stem......................... #$stem................. ............ ....

PC HARDWARE SERVICING The Strengthened Technical-Vocational Education Program

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Inormation #heet *.& !leaning our !om"uter !om"uter #$stem................... .. 'cti(it$ #heet *.&............................ *.&................................................................ ..................................................... ................. Inormation #heet *.1 .................................. .................................................................. ...................................... ...... Post Test................................ est..................................................................... .................................................................. ............................. 'nswer e$s............................. e$s................................................................. ............................................................... ...........................


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Inormation #heet *.& !leaning our !om"uter !om"uter #$stem................... .. 'cti(it$ #heet *.&............................ *.&................................................................ ..................................................... ................. Inormation #heet *.1 .................................. .................................................................. ...................................... ...... Post Test................................ est..................................................................... .................................................................. ............................. 'nswer e$s............................. e$s................................................................. ............................................................... ...........................


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/elcome elcome to the Module Module “Introducing Computer System” . This module contains training materials and acti(ities or $ou to wor% on. The unit o com"etenc$ “Introduce Computer System” contains %no %n owledg ledge0 e0 s%ill %ills s and attit ttitud udes es re,u e,uired ired or or a Computer Computer Hardware Hardware Servicing NC II course. ou ou are re,uired to go through a series o learning acti(ities in order to com"lete each o the learning outcomes o the module. In each learning Informat mation ion Sheet Sheets s and Activity Activity Sheets Sheets. ollow outc outcom ome e ther there e are are Infor these acti(ities on $our own and answer the #el-!hec% at the end o each learning acti(it$. I $ou $ou ha(e a(e ,ues ,uesti tion ons0 s0 don2 don2tt he hesi sita tate te to as% as% $our $our teac teache herr or or assistance. 'ter ter com" com"le leti ting ng this this modu module le as% as% $our $our teac teache herr to asse assess ss $our $our com" com"et eten enc$ c$.. )esul esultt o $our $our asse assess ssme ment nt will will 3e recor ecorde ded d in $our $our com"et com"etenc enc$ $ "rof "rofle. le. 'll the learn learning ing acti(i acti(itie ties s are are design designed ed or $ou to com"lete at $our own "ace. Inside this module $ou will fnd the acti(ities or $ou to com"lete ollowed 3$ rele(ant inormation sheets or each learning outcome. +ach learning outcome ma$ ha(e more than one learning acti(it$.


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Program4 !ourse  Computer Hardware Servicing NC II Unit o !om"etenc$  Introduce Computer System Module Title  Introducing Computer System INTRODCTION!

This module contains inormation and suggested learning acti(ities on !om"uter Hardware #er(icing. It includes training materials and acti(ities or $ou to com"lete. !om"letion o this module will hel" $ou 3etter understand the succeeding module on !om"uter Hardware #er(icing. This module consists o " learning outcomes. +ach learning outcome contains learning acti(ities su""orted 3$ each instruction sheets. 5eore $ou "erorm the instructions read the inormation sheets and answer the sel-chec% and acti(ities "ro(ided to ascertain to $oursel and $our teacher that $ou ha(e ac,uired the %nowledge necessar$ to "erorm the s%ill "ortion o the "articular learning outcome. U"on com"letion o this module0 re"ort to $our teacher or assessment to chec% $our achie(ement o %nowledge and s%ills re,uirement o this module. I $ou "ass the assessment0 $ou will 3e gi(en a certifcate o com"letion. S##AR$ O% &'ARNIN( OTCO#'S!

U"on com"letion o the module $ou should 3e a3le to LO1. introduce the com"uter s$stem LO&. identi$ the com"uter "arts and their "eri"herals LO*. maintain com"uter s$stem


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#u)tip)e*choice!

1. /hat do $ou call the large screen in a la"to"6 a7 !PU 37 Mother 3oard c7 8ideo !ard d7 L!D &. /hat t$"e o mother3oard design that is common in large P! networ% ser(ers and on other com"uters on which the "rocessor is u"graded re,uentl$6 a7 Mother3oard 37 !PU c7 5ac%"lanes d7 'T9 *. It ser(es as the "ower su""l$ or $our la"to"6 a7 'T 37Power #u""l$ c7 !MO# d7 5atter$ :. It defnes a mother3oard2s si;e0 sha"e and how it is mounted to the case6 a7 Mother3oard 37 orm actor c7 L<9 d7 P#U =. It is also %nown as main3oard0 s$stem 3oard or "lanar6 a7 Mother3oard 37 Mother3oard #t$le c7 !PU d7 L9< >. It is the s%eletal rame wor% o $our com"uter s$stem. a7 !o(er 37 !hassis c7 #crews d7 Power su""l$ ?. It "ro(ides "rotection or the internal "arts o the com"uter. a7 !hassis 37 )eset c7 !ase d7 !o(er @. The "art o the com"uter that "ro(ides "ower to the entire s$stem6 a7 !PU 37 Dri(e 5a$ c7 Power #u""l$ d7 )eset A. ' 3utton that allows the user to Turn oB the com"uter. a7 )eset 37 Tur3o c7 L+D d7 Power switch 1C. The "art o the chassis where $ou "lace the Mother3oard dri(es. a7 Dri(e 5a$ 37 !o(er c7 !hassis d7 !PU


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orm actor - The industr$ standard that defnes the "h$sical and eternal dimensions o a "articular de(ice. 'T

- 'd(ance Technolog$

'T9

- E'd(ance Technolog$ +tended7 is a com"uter orm actor designed 3$ Intel in 1AA=.

FL9

- EFew Low Profle +tended7 was a orm actor "ro"osed 3$ Intel and de(elo"ed Gointl$ with I5M0 D+!0 and other (endors.

/atts

- is the #I deri(ed unit o "ower0 e,ual to one Goule o energ$ "er second.

+rgonomic - The stud$ o wor% organi;ation0 and the human4machine interace in "articular. #ensor

- The stud$ o wor% organi;ation0 and the human4machine interace in "articular.

Platter

- The actual storage media in the diBerent t$"e o dis%. In the hard dri(e the "latter ha(e a core o glass or aluminum0 co(ered with a thin la$er o erric oide or !o3alt allo$ E!o-Fi0 !o-!r0 !o-Fi-/7.

Magnetic - ha(ing the "ro"erties o a magnet i.e. o attracting iron or steel the hard dis% is co(ered with a thin coat o magnetic material. #tatic electricit$- reers to the 3uildu" o electric charge on the surace o o3Gects.


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Program4 !ourse  Computer Hardware Servicing NC II Unit o !om"etenc$  Introduce the Computer System Module Title  Introducing the Computer System &earning Outcome + ! Introduce the Computer System ASS'SS#'NT CRIT'RIA!

1. T$"es o com"uters according to si;e and use are identifed. &. !haracteristics o hardware0 sotware and frmware are identifed. *. )elationshi" o hardware and sotware in a com"uter s$stem are distinguished. R'SORC'S! ',uipment and Accessories L'F !ard UP# &: "ort-Hu3 Modem !om"uter Unit U#5 +ternal !D writer U#5 #canner U#5 Printers U#5 lash Dri(e

Too)s

#ateria)s

#crewdri(erEstandard7 #crewdri(erEPhili"s7 Long nose "liers Mechanical "liers 'llen wrench Multi-tester !rim"ing tools /ire #tri""er L'F Tester 'nti-static wrist wra" De(ice dri(ers4installers

#otware '""lications )J := UTP !at = ca3le Mother3oard2s Manual and Installer #ound De(ice Dri(er Installer

R'%'R'NC'S! •

'ntoinette ). Marcelo. Understanding P! Hardware. !o"$right &CC? Jemma Inc.

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McLaughlin0)o3ert0 #asser0#usan0 )alston0Mar$.i our Own P!.Phili""ine
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•

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IN%OR#ATION SH''T +.+ T$-'S O% CO#-T'R hat are computers/

!om"uters are electronic de(ices that are ca"a3le o "rocessing data4inormation gi(en in the orm o num3ers0 words0 "ictures0 and e(en sounds. The$ can 3e "rogrammed Egi(en instructions7 to carr$ out (arious %inds o inormation "rocessing Go3s.

•

•

Di0erent 1inds of Computers  De"ending on the si;e and ca"acit$0 com"uters are classifed into three t$"es • M'IF)'M+ !OMPUT+)# MIFI!OMPUT+)# • MI!)O!OMPUT+)# O) P+)#OF'L !OMPUT+)#. •

 •

#ainframe Computers Large and "owerul com"uters that are used 3$ man$ "eo"le Eusers7 at the same time t$"icall$ installed in large organi;ations4com"anies.


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•

Supercomputers +tremel$ "owerul mainrame com"uters used in scientifc and engineering a""lications.



#inicomputers



•

Minicom"uters are medium si;ed com"uters -- 5etween Mainrame com"uters and Microcom"uters

App)ication of Computers  8arious %inds o Go3s that are done using com"uters • #!I+FTII! !OMPUT'TIOF#


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•

++PIF< T)'! O IFO)M'TIOF

+am"le 5an%ing0 )ailwa$s or 'irlines

)eser(ations

P)+P')'TIOF O DO!UM+FT# 'FD MULTIM+DI' P)+#+FT'TIOF# +am"les Power "oint Presentations in meetings and seminars. •

8ideo "resentation o flms and

ootages

#IMUL'TIOF O )+'L O) IM'
#TO)IF< 'FD #H')IF< IFO)M'TIOF +am"le /orld /ide /e3EInternet7 /e3 !asting •


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Matching T$"e Directions Match column ' to column 5. Place $our answer in the answer sheet gi(en 3$ $our teacher. A

1.

2

Personal !om"uter 8-

&. *

Mainrame !om"uter

/-

Mini com"uter

9-

:. =.

/orld /ide /e3

-

#u"er !om"uter

-


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IN%OR#ATION SH''T +.3 Computer components and its characteristics Components of a Computer

1. The com"onents o a com"uter are classifed into the three main categories hardware0 sotware and documentation. +.+ Hardware The mechanical and electronic "arts that "erorm the (arious tas%s o the com"uter +.3 Software  The "rograms or instructions that tell the hardware what tas%s are to 3e done and how. +." %irmware4Documentation Instructions in read onl$ memor$ E)OM7.

1.1 Hardware com"onents The hardware o a t$"ical com"uter s$stem0 irres"ecti(e o its si;e0 consists o the ollowing com"onents 1.1.1 !+FT)'L P)O!+##IF< UFIT  !PU


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1.1.& M+MO)

.

1.1.& #TO)'<+ D+8I!+#

1.1.: IFPUT 4 OUTPUT D+8I!+#


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+.3 Computer Software

1.&.1 !om"uter #otware4Program ' sotware4"rogram is a se,uence o commands written in a • com"uter "rogramming language that s"ecifes a tas% that the com"uter will "erorm. • #ome o the com"uter "rogramming languages are 8I#U'L 5'#I!0 !0 !NN0 J'8' !lassifcation o !om"uter #otware !om"uter sotware can 3e classifed into ollowing categories OP+)'TIF< ##T+M U#+) P)O<)'M# 'PPLI!'TIOF P)O<)'M# • • •

O"erating #$stem O"erating s$stem EO#7 is the 3asic sotware res"onsi3le or interacting with the hardware. It is the oundation on which user "rograms and a""lication "rograms are 3uilt. It hel"s the user to enter "rograms or data0 store them in fles and eecute "rograms. Two "o"ular o"erating s$stems in use toda$ are Uni  or mainrames and minicom"uters. /indows and Linu  used or "ersonal com"uters.

 •

•

•

•

• •

User Programs User Programs /ritten 3$ users or "rogrammers or themsel(es or or their organi;ation.

 •

PC HARDWARE SER VICING The Strengthened Technical-Vocational Education Program

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'""lication Programs !om"uters are increasingl$ 3eing used in almost e(er$ acti(it$ 3usiness0 industr$0 commerce0 health0 education0 entertainment0 s"orts0 etc. ♦ /ord "rocessing ♦ Des%to" Pu3lishing ♦ #"readsheets

 •

Ms M# Power"oint

+cel

1.*

/ord

M#

irmware •

•

Is the "rogram that is em3edded in a silicon chi" rather than stored on a o""$ dis%. ou can access the com"uter 5IO# utilit$ 3$ "ressing a s"ecial %e$ right ater $ou turn on $our com"uter. The s"ecial %e$s are ED+L7 delete %e$ or E&7 unction %e$ no.& or E1C7 unction %e$ no. 1C

+am"le 5IO# chi" or !MO#

!M O# !HIP

PC HARDWARE SERVICING The Strengt hened Technical-Vocational Education Program

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5IO# UTILIT

',uipment5 Too)s5 and #ateria)s

Personal !om"uter Directions 1. !hoose a "artner to wor% with. &.
Scoring + 3 " 6 7

1. The hardware unctions are identifed successull$. &. The sotware and frmware unction is identifed successull$. *. Pro"er access to the frmware is careull$ o3ser(ed. :. #aet$ "recautions are o3ser(ed.

= :

- +cellentl$ Perormed - 8er$ #atisactoril$ Perormed


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* & 1

#atisactoril$ Perormed airl$ Perormed - Poorl$ Perormed

#u)tip)e choice

1. /hat do $ou call a "rogram em3edded on a silicon chi"6 a7 Peo"leware 37 #otware c7 irmware d7 Hardware &. /hat do $ou call the sotware that interacts with the com"uter hardware6 a7 '""lications37 O"erating #$stem c7 irmware d7 #"readsheets *. The mechanical and electrical "art o the com"uter s$stem is the. a7 #otware 37 Hardware c7 Uni d7 irmware :. 'n o"erating s$stem used in mainrames and mini-com"uters is the. a7/indows 9P 37 Uni c7 Panda d7 5IO# =. /hich one is an eam"le o an o"erating s$stem commonl$ installed in "ersonal com"uters. a7 Uni 37 /indows c7 5IO# d7 M#-/ord


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IN%OR#ATION SH''T +." Distinguishing Hardware and Software Re)ationship Hardware and Software Re)ationship

or a com"uter to "roduce useul out"ut its hardware and sotware must wor% together. Fothing useul can 3e done with the hardware on its own0 and sotware cannot 3e utili;ed without su""orting hardware. To ta%e an analog$0 a !D "la$er and its !D "urchased rom the mar%et are hardware. Howe(er0 the songs recorded on the !D are its sotware. To listen to a song0 that song has to 3e recorded on one o the !D frst0 which is then mounted on the com"act dis% and "la$ed. #imilarl$0 to get a Go3 done 3$ a com"uter0 the corres"onding sotware has to 3e loaded in the hardware frst and then eecuted. ollowing im"ortant "oints regarding the relationshi" 3etween hardware and sotware are 3rought out 3$ this analog$ 1. 5oth hardware and sotware are necessar$ or a com"uter to do useul Go3. 5oth are com"lementar$ to each other. &. #ame hardware can 3e loaded with diBerent sotware to ma%e a com"uter "erorm diBerent t$"es o Go3s Gust as diBerent songs can 3e "la$ed using the same !D "la$er. *. +ce"t or u"grades Eli%e increasing main memor$ and hard dis% ca"acities0 or adding s"ea%ers0 modems0 etc.7 hardware is normall$ a one- time e"ense0 whereas sotware is a continuing e"ense. Li%e we 3u$ new cassettes or newl$ released songs or or songs whose cassettes0 we do not ha(e0 we 3u$0 new sotware to 3e run on the same hardware as and when need arises0 or unds 3ecome a(aila3le. #otware


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our sotware is useless without $our Hardware

The com"uter is useless without $our #otware Hardware

Interview

Directions 1. /or% in grou"s o > as a "anel. One will 3e the inter(iewer 0while the rest o the "anel will answer &. The students will 3e as%ed the ollowing ,uestions. o o o

/h$ do com"uters need sotware6 /h$ do we need to install diBerent sotware in our com"uters6 5rie$ e"lain the relationshi" 3etween com"uter hardware and sotware.

*. )ate $our grou"s2 "erormance using the Perormance score card 3elow! -'R%OR#ANC' SCOR' CARD -erformance Criteria

Scoring + 3 " 6 7

1. Im"ortance o com"uters is clearl$ e"lained. &. Installation o diBerent sotware is e"lained. *. )elationshi" 3etween hardware and sotware is well e"lained.


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= : * & 1

- +cellentl$ Perormed - 8er$ #atisactoril$ Perormed #atisactoril$ Perormed airl$ Perormed - Poorl$ Perormed

Program4 !ourse  Computer Hardware Servicing NC II Unit o !om"etenc$  Introduce Computer System Module Title  Introducing Computer System &earning Outcome 3 ! Identify of computer parts and its periphera)s ASS'SS#'NT CRIT'RIA!

1. '""ro"riate "ersonal "rotecti(e e,ui"ment used in Hardware #er(icing is identifed. &. '""ro"riate tools are used according to standard saet$ "rocedure. *. Identifcation o the diBerent com"uter "arts is identifed. :. !haracteristics and unctions o each com"uter com"onent are identifed. =. #aet$ "recautions are o3ser(ed at all times. R'%'R'NC'S! ♦

htt"44en.wi%i"edia.org4wi%i4!ustomerser(ice

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htt"44en.wi%i"edia.org4wi%i4Qualit$standard

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htt"44www.technet.unsw.edu.au4tohss4sw".htm

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htt"44net.rrc.m3.ca4healthsaet$4saewor%"rocedures


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'ntoinette ). Marcelo. Understanding P! Hardware. !o"$right &CC? Jemma Inc. ♦

♦

htt"44www.em".org4em"asis4augC:4"ro".htm

htt"44www.la%eland.cc.il.us4Rinternal4"olic$manual41CfscalaBairs41 C&>.POL.htm ♦

IN%OR#ATION SH''T 3.+ -ersona) -rotective ',uipment Refers to protective clothing, helmets, goggles, or other garment designed to protect the wearer's body from injury by blunt impacts, electrical hazards, heat, chemicals, and infection, for job-related purposes.

-ersona) -rotective ',uipment used in Hardware Servicing

There are certain "ersonal "rotecti(e de(ices used in com"uter hardware ser(icing0 this e,ui"ments are designed to "rotect the de(ices against +#D E +lectro #tatic +lectricit$7 and other en(ironmental ha;ards. Anti* Static Devices De(ices used to com"uter unit static electricit$.

.1 'nti- #tatic


"rotect the against /rist #tra"

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.& 'nti-#tatic Mat

.* 'nti #tatic #"ra$ - Use to remo(e +#D rom $our

wor% area

1.: 'nti- #tatic 5ag -Use to store $our de(ices sae rom

sensiti(e +#D.


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3. -ower -rotection Devices - De(ices use to "rotect the user and the com"uter rom sudden increase4dro""ed o electricit$. Power "rotection de(ices are also used against sort circuits.

&.1 '8) E'utomatic 8oltage )egulator7 -'utomaticall$ maintain a constant (oltage le(el.

&.& UP# EUninterru"ti3le Power #u""l$7 - #er(es as a 3atter$ 3ac%u"0 "ro(ides emergenc$ "ower

&.* #urge #u""ressors - 'n a""liance designed to "rotect electrical de(ices rom (oltage s"i%es.


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-ersona) -rotective ',uipment app)ication Anti*static devices - 'lwa$s use an anti-static wrist stra" when wor%ing on a com"uter ece"t when wor%ing on monitors more a3out that 3elow. One end is an elastic 3and that fts around $our wrist and which is connected to an alligator cli" 3$ a wire. The cli" connects to a metal "art o the com"uter chassis0 which e,uali;es the (oltage 3etween $ou and the com"uter0 thus a(oiding static s"ar%s.

-ower -rotection Devices

- Plug the com"uter to "rotection de(ice to a(oid (oltage s"i%es and "ower surges.


UP#

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Identi8cation Type

Directions 'nswer the ollowing ,uestions and "lace $our answer on $our test 3oo%let. 1. ' de(ice used against "ower4(oltage s"i%es. &. ' "ower "rotecti(e e,ui"ment that ser(es as a 3ac%u" 3atter$ or $our com"uter. *. It is used to store sensiti(e com"uter "eri"herals. :. ' anti-static de(ice $ou need to use when touching com"onents in a com"uter unit. =. ' de(ice that "ro(ides a sta3le "ower s$stem.


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IN%OR#ATION SH''T 3.3 sing Hand Too)s Hand Too)s - de(ice or "erorming wor% on a material or a "h$sical

s$stem using onl$ hands. The hand tools can 3e manuall$ used em"lo$ing mechanical orce0 or electricall$ "owered0 using electrical current. T$"es o hand tools Side Cutter -)iers  a tool used or cutting or trimming o connecting wires or terminal leads in the circuit 3oard &ong nose -)iers  Used or holding0 3ending and stretching the lead o electronics com"onent or connecting wire.

Crimping Too)* a tool use to connect a )J:= connector to a networ% ca3le.

Twee9ers* a tool use to hold small sensiti(e "art o a com"uter.


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Cutter* a tool used in cutting wires.

%)at Screw Driver  a tool used to dri(e or asten negati(e slotted screws

-hi)ips Screw Driver- a tool used to dri(e or asten "ositi(e slotted screws

%)ash)ight* a small electric light0 use to illuminate a dar% area..

-aint 2rush * use or cleaning "arts o a com"uter.

#agnifying g)ass* a de(ice made in glass with handle0 to eaggerate or to increase the a""arent si;e o an o3Gect.


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',uipment5 Too)s5 and #ateria)s 5asic hand tools

Directions 1. !hoose a "artner to wor% with. &.
Scoring + 3 " 6 7

1. 'll hand tools are identifed successull$. &. 'll unctions are identifed successull$. *. Pro"er handling o tools is o3ser(ed. :. #aet$ "recautions are o3ser(ed.

- +cellentl$ Perormed PC =HARDWARE SERVICING The Strengthened Technical-Vocational Education Program

28 | P a g e

: * & 1

- 8er$ #atisactoril$ Perormed #atisactoril$ Perormed airl$ Perormed - Poorl$ Perormed

Matching T$"e Directions Match column ' to column 50 "lace $our answer in the answer sheet gi(en 3$ $our teacher. A

1.

2

Philli" #crew dri(er H-

&. *

!rim"ing Tool

I-

lash Light

J-


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:. =.

Twee;er

-

Magni$ing glass L-

IN%OR#ATION SH''T 3." Hardware Components and -eriphera)

our P!2s s$stem case is "ro3a3l$ high on the list o com"onents $ou thin% a3out the least. Howe(er0 in s"ite o the act that the s$stem case has onl$ one or two com"onents that are acti(e0 namel$ the "ower su""l$ and the ront "anel0 the P!2s case "la$s a maGor role in the P!2s o"eration. In s"ite o the act that the P!2s case Gust seems to sit there0 it does "erorm a num3er o (er$ (alua3le unctions. Pro(ides the aesthetics o the s$stem • • Pro(ides the P! with its structure • Pro(ides "rotection and cooling or the electronics and other de(ices mounted inside !om"uter case comes in al si;es0 sha"es0 colors and aces. These (ariations in si;e factor. and sha"e are dri(en 3$ the case2s form The form factor o the case is its sha"e0 the wa$ its com"onents ft together and most o all its si;e.


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•

•

•

•

• • •

•

•

•

•

•

Chassis the s%eletal ramewor% that "ro(ides the structure0 rigidit$ and strength o the case. Cover "la$s an im"ortant role in the cooling0 "rotection and structure o the P!. -ower Supp)y a (er$ im"ortant com"onent0 not onl$ to the case assem3l$0 3ut to the P! and its other com"onents. %ront pane) in addition to "ro(iding the P! with its loo%s and color0 the ront "anel also "ro(ides inormation on the P!2s status0 allows the user to "h$sicall$ secure the P! and on some case t$"es0 it is the starting "oint or remo(ing the case co(er. Power switch )eset switch #tatus L+D -ower &'D :&ight 'mitting Diode; t$"icall$ green in color and illuminated when the P!2s "ower is on. Hard drive &'D when the dri(e is see%ing0 reading or writing data0 this red0 orange or am3er L+D is lit and ashes. Tur
Reset

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•

Interna) drive
Power Supply

Drive Bays

Chassis Front Panel

System Case Sty)es +. Des>top case ? the at0 3o$ one is the des%to" case P!. It dou3les as the 3ase or P!2s monitor. 3. Tower cases ? the tall0 thin case are the tower st$le. 5elow are the "o"ular (ariations o the tower case %u)) tower are the largest standard P! cases a(aila3le. The$ oBer the most o an$ case st$le in the wa$ o e"anda3ilit$0 t$"icall$ ha(ing three to f(e eternal dri(e 3a$s and a ew internal dri(e 3a$s as well. #id*tower is a slightl$ shorter (ersion o the ull tower. #idi*tower eist somewhere 3etween the mid-tower and the mini-tower. 5$ defnition0 a midi-tower is smaller than a mid-tower and larger than a minitower. #ini*tower this is the most "o"ular case toda$. It "ro(ides slightl$ more e"ansion ca"acit$ than des%to" cases.


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Des%to" !ase

Tower !ase The -ower Supp)y

The power su""l$ unit EP#U7 in a com"uter regulates and deli(ers the "ower to the com"onents in the case. Power #u""lies contain dangerous (oltages and should onl$ 3e o"ened 3$ e"erienced and ,ualifed engineers there are no user ser(icea3le "arts inside. 'lwa$s disconnect the P#U rom the mains su""l$ 3eore remo(ing the co(er o the P!. #tandard "ower su""lies turn the incoming 11C8 or &&C8 '! E'lternating !urrent7 into (arious D! EDirect !urrent7 (oltages suita3le or "owering the com"uterSs com"onents. Power su""lies are ,uoted as ha(ing a certain "ower out"ut s"ecifed in /atts0 a standard "ower su""l$ would t$"icall$ 3e a3le to deli(er around *=C /atts. The more com"onents Ehard dri(es0 !D4D8D dri(es0 ta"e dri(es0 (entilation ans0 etc7 $ou ha(e in $our P! the greater the "ower re,uired rom the "ower su""l$. 5$ using a P#U that deli(ers more "ower than re,uired means it wonSt 3e running at ull ca"acit$0 which can "rolong lie 3$ reducing heat damage to the P#U internal com"onents during long "eriods o use. 'lwa$s re"lace a "ower su""l$ with an e,ui(alent or su"erior "ower out"ut E/attage7.


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There are are * t$"es o "ower su""l$ su""l$ in common use •

AT -ower Supp)y - still in use in older P!s.

•

AT@ -ower Supp)y - commonl$ in use toda$.

•

AT@*3 -ower Supp)y - recentl$ new standard. standard.

' "ower su""l$ can 3e easil$ changed and are generall$ not e"ensi(e0 so i one ails Ewhich is ar rom uncommon7 then re"lacement is usuall$ the most economic solution. The power supp)y connectors 6 -in 2erg Connector -Used to connect the P#U to small orm actor de(ices0 such as *.= o""$ dri(es. -available in: AT5 AT@  AT@*3 6 -in #o)e= Connector -This is used to "ower (arious com"onents0 including hard dri(es and o"tical dri(es. -available in: AT5 AT@  AT@*3 3B -in #o)e= AT@ -ower Connector -This is used to "ower the mother3oard in 'T9 s$stems. -available in: AT@E 'T9-& ha(e our etra "ins7

6 -in #o)e= -ower Connector -Used s"ecifcall$ or Pentium : Processor Mother3oards. -available in: AT@ Eintegrated into the "ower connector in 'T9&7  -in A@ Connector -Pro(ides N=8 D!0 and two connections o N*.*8. -available in: AT@4AT@*3

AT@ -ower Supp)y -in outs 5elow are "in out diagrams o the common connectors in 'T9 "ower su""lies.


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The #other
The mother3oard is easil$ the most im"ortant "art o the com"uter. com"uter. 'lthough there are a num3er o com"onents that a P! cannot unction without0 it2s the mother3oard that ties them all together and turns them into a "ersonal com"uter. The mother3oard0 mother3oard0 or main 3oard0 o a P! is a large "rinted circuit 3oard that is home to man$ o the most essential "arts o the com"uter0 incl includ udin ing g the the !PU0 !PU0 chi" chi"se set0 t0 cach cache0 e0 memo memor$ r$ soc% soc%et ets0 s0 e"a e"ans nsio ion n 3us0 3us0 "arallel and serial "orts0 mouse and %e$3oard %e$3oard connectors and ID+0 +ID+ or #!#I #!#I contr ontro oller llers. s. Thee mothe otherr3oar 3oard d 3ind 3inds s the the P!2s P!2s o"er "eratio ationa nall com"onents together.


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#other
orm orm actors defne a mother3oard2s si;e0 sha"e and how it is mounted to the case. Howe(er0 orm actors now include the si;e0 sha"e and unction o the s$stem case the t$"e0 "lacement and si;e o the "ower su""l$ the s$stem2s "ower re,uirements the location and t$"e o the eternal connectors0 and the case2s airow and cooling s$stem. AT:Advance Techno)ogy; %orm %actor The initial design o mother3oards mother3oards introduced introduced 3$ I5M EInternational EInternational 5usiness Machines7

AT@ %orm %actor It was released 3$ Intel in 1AA= and was an im"ro(ement o(er the LP9 orm actor.


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#ini AT@ This is slightl$ smaller than 'T9 3ut all the s"ecifcations o the 'T9 are included.

N&@ %orm %actor ' new standardi;ed orm actor. The three "rimar$ ocuses o the FL9 are the "rocessor and s$stem cooling0 the num3er o connections or multimedia hardware and reducing the clutter o interior ca3les.

The the

Components of #other pane) the ollowing

The com"osed o "arts

'=pansion PC s)otsHARDWARE

SERVICING

The Strengthened Technical-Vocational Education Program

37 | P a g e

C-

C#OS

-ower Conner

#emory S)ots

The Centra) -rocessing nit

!PU stands or !entral Processing Unit. It is the 3rain o the com"uter unit. The reason the !PU is called a "rocessor is 3ecause it can wor% with data. 'nd it has two im"ortant Go3s • •

It can do calculations. It can move data.

The !PU is (er$ ast at doing 3oth Go3s. The aster the !PU can do calculations and mo(e data0 the aster we sa$ the P! is. /hat ollows is a short descri"tion o how to achie(e aster data "rocessing. )ead it0 and see i $ou understand all the conce"ts. There are three wa$s to im"ro(e a P!2s "erormance.

The 'vo)ution of the C- Inte) C- %ami)y Tree +. %irst (eneration! B5 B5 B+5 B+and BE ? these were introduced in 1A?@ and had a cloc% s"eed o :.??MH;. .


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Inte) B 3. Second (eneration! B3 and B3E ? it has a cloc% s"eed o > to @ MH and uses 1> 3it data 3us.

B3 C- ". Third (eneration! ? this was a ull *& 3it "rocessor and has cloc% s"eed o 1> MH;.

6. The %ourth (eneration!? this !PU incor"orates a cache memor$ and an integrated math co"rocessors. This was the frst to use Intel2s new soc%et num3ering s$stem0 the #oc%et 1.


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6D@ and Soc>et +

7. The %ifth (eneration! Inte) F-7G -entium and -entium ##@ = was originall$ %nown as @C=@>0 3ut Intel ound out that model num3ers could not 3e co"$righted. #o0 instead o num3ers0 the$ used a trademar% name0 Pentium.

. The Si=th -art+ ! -G -entium II5 -entium II @eon


(eneration5 -entium -ro5 Ce)eron and

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Inte) -entium -ro and Soc>et  C- Accessories

!PU !ooling #$stem

!PU Heat sin%  It is use to cool down the

!PU.

Computer -orts and Connectors

The frst in"ut and out"ut de(ices $ou encounter are the eternal de(ices0 such as the %e$3oard0 (ideo monitor0 "rinter and so orth. #ome o these de(ices ha(e connectors that are the same as0 or (er$ similar to0 the connectors used or other de(ices. In most cases "lugging a new de(ice into the wrong connector can damage the de(ice or the s$stem0 so $ou need to %now all the diBerent connectors and which de(ices use them.


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Connector Types

1ey
S2 -ort

&AN -ort

ideo Out

Audio -ort

e$3oard "ort  connects the com"uter %e$3oard. 8ideo Out  Pro(ides 8ideo out"ut or $our com"uter. U#5 EUni(ersal #erial 5us7- connect com"uter "eri"herals such as mice0 %e$3oards0 PD's0 game"ads and Go$stic%s0 scanners0 digital cameras0 "rinters0 "ersonal media "la$ers0 ash dri(es0 and eternal hard dri(es.

The Computer 1ey
This is the most common in"ut de(ice. The %e$3oard allows the user to communicate with the P! through %e$stro%es that re"resent character data and commands.


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1eyeys ? the al"ha3et %e$s along with row num3ers and s"ecial characters. These %e$s match those on a t$"ewriter. 'l"ha3et %e$s • Punctuation and s"ecial characters • 'ctions %e$s • • !haracter selection %e$s • !ommand control %e$s +nter %e$ • /hite s"ace %e$s • Fum3er4s"ecial character %e$s • 3. Cursor contro) >ey ? located on the right side o the al"hanumeric %e$s0 this grou" o %e$s has two smaller grou"s o %e$s the cursor unction %e$s and cursor arrow %e$s. ". %unction >eys* located across the to" o a %e$3oard. 6. Numeric >eypad ? the num3er "ad0 which is located on the etreme right side o nearl$ all modern %e$3oards0 contains %e$s or ten num3ers0 as well as the our arithmetic unctions. This can also 3e used as a cursor control "ad 3$ toggling the FUM LO! %e$. 7. Togg)e and &oc> >eys . Specia) purpose >eys • +#! %e$ • Print #creen %e$ • Pause43rea% %e$ E. indow >eys /indows %e$ • '""lication4!ontet %e$ •

1eyeys -C4@T >ey

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&. 6*>eys AT >ey
*. 'nhanced +B+* >eys >ey
:. indows +B6* >eys >ey
=. Natura) and 'rgonomic 1ey

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1eyeys ? the al"ha3et %e$s along with row num3ers and s"ecial characters. These %e$s match those on a t$"ewriter. 'l"ha3et %e$s • Punctuation and s"ecial characters • 'ctions %e$s • !haracter selection %e$s • !ommand control %e$s • • +nter %e$ • /hite s"ace %e$s Fum3er4s"ecial character %e$s • Cursor contro) >ey ? located on the right side o the al"hanumeric %e$s0 this grou" o %e$s has two smaller grou"s o %e$s the cursor unction %e$s and cursor arrow %e$s. %unction >eys* located across the to" o a %e$3oard. Numeric >eypad ? the num3er "ad0 which is located on the etreme right side o nearl$ all modern %e$3oards0 contains %e$s or ten num3ers0 as well as the our arithmetic unctions. This can also 3e used as a cursor control "ad 3$ toggling the FUM LO! %e$. Specia) purpose >eys +#! %e$ • • Print #creen %e$ • Pause43rea% %e$ indow >eys /indows %e$ • '""lication4!ontet %e$ •

1eyeys


Numeric >eypad

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Specia) purpose

indow >eys

A)phanumeri c >eys

Cursor contro) >ey

1ey

Signa) e$3oard Data Unused
". The S2 Connector ? the uni(ersal serial 3us is a multiunction "eri"heral 3us that is growing ra"idl$ in "o"ularit$0 and the %e$3oard is one o man$ de(ices that can use it.


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6. IrDA :infrared; connector * it is a wireless %e$3oard.

-ointing Devices +. Traditiona) #ice4#ouse * a "alm-si;ed "lastic housing with a ru33er 3all "rotruding rom the 3ottom and a cord coming out the 3ac%.

3. Trac>
". I2# 4Trac> -oint ? also %nown as

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6. Touch -ads ? it is a rectangular "ad located 3elow the s"ace3ar on a la"to" %e$3oard. The "ad senses the ca"acitance o $our fnger as $ou mo(e it across the surace.

7. Joystic> ? a t$"e o "ointing de(ice that is used "rimaril$ with game sotware on a P!.

. (raphic Ta<)ets ? similar in conce"tion with the touch "ad0 3ut it is larger and used with a st$lus instead o $our fnger.

Hard Dis> 2asics

' de(ice that allows the user to store large amounts o data in the com"uter unit0 sometimes reered also as the hard dri(e or /inchesters dri(e. .


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Here is a t$"ical hard-dis% dri(e

Inside the Hard Dis>

Platters 'rm

•

•

The p)atters - These t$"icall$ s"in at *0>CC or ?0&CC r"m when the dri(e is o"erating. These "latters are manuactured to ama;ing tolerances and are mirror-smooth. The arm - This holds the read4write heads and is controlled 3$ the mechanism in the u""er-let corner.

The %)oppy Dis>

The Koppy dis> drive :%DD; was the "rimar$ means o adding data to a com"uter until the !D-)OM dri(e 3ecame "o"ular. In act0 DDs ha(e 3een a %e$ com"onent o most "ersonal com"uters or more than &C $ears. 5asicall$0 a o""$ dis% dri(e reads and writes data to a small0 circular "iece o metal-coated "lastic similar to audio cassette ta"e. In this article0 $ou will learn more a3out what is inside a o""$ dis% dri(e and how it wor%s. ou will also fnd out some cool acts a3out DDs.


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Optica) drives

O"tical dri(es uses laser light or electromagnetic wa(es near the light s"ectrum as "art o the "rocess o reading or writing data to or rom o"tical discs

-orta<)e Devices

De(ices that are com"act and "orta3le and oten ena3le wireless high-s"eed 3road 3and access0 including la"to"s0 "ersonal digital assistants EPD's70 gaming consoles0 mo3ile "hones. Types of porta<)e devices

La"to" - a "ersonal com"uter designed or mo3ile use and small and light enough to sit on oneSs la" while in use. ' la"to" integrates most o the t$"ical com"onents o a des%to" com"uter0 including a dis"la$0 a %e$3oard0 a "ointing de(ice Ea touch"ad0 also %nown as a trac% "ad 0 and4or a "ointing stic%70 s"ea%ers0 and oten including a 3atter$0 into a single small and light unit.


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#mart "hones and PD'2s - PD' and #mart "hones are eam"les o "orta3le0 hand-held de(ices that are 3ecoming more "o"ular. PD'2s oBer eatures such as games0 we3 surfng0 e-mail0 instant messaging0 and man$ other eatures oBered 3$ P!s

2asic parts of a )aptop

#$stem 5oard  The s$stem 3oard is the main logic 3oard in an$ la"to". 'll internal com"onents are connected to the s$stem 3oard. This is one o the most e"ensi(e "arts in a la"to"


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Memor$ - tem"orar$ data storage. It2s a (olatile t$"e o memor$. /hen $ou turn oB the la"to"0 all the inormation stored in a )'M module is lost.

Hard Dri(e * is the main storage o inormation in a la"to". 'll s$stem fles0 "ersonal fles are stored inside the hard dri(e. ind the diBerence 3etween #'T' and ID+ hard dri(es. aster hard dri(e $ou ha(e installed  aster data access $ou get.


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Processor  the 3rain o the com"uter. The "rocessor is one o the main com"onents in a la"to". La"to" "rocessors are made mainl$ 3$ Intel and 'MD.

O"tical Dri(e - The !D4D8D dri(e allows $ou to read4write data rom4to a !D or D8D disc.

!ooling an -The cooling an is a "art o the cooling module in a la"to". The an hel"s to cool down the "rocessor when the la"to" is turned on.


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8ideo card - In most modern la"to"s the (ideo card is integrated into the s$stem 3oard. I the (ideo card ails $ou ha(e to re"lace the whole mother3oard. In some la"to"s the (ideo card is a discrete module and can 3e remo(ed or re"laced se"aratel$ rom the mother3oard.

'udio and #ound - In most la"to"s the audio 3oard is a "art o the mother3oard. I that2s the case0 all audio 3oard in"ut4out"ut com"onents such as (olume control0 micro"hone Gac% and head"hone Gac% are soldered director$ to the mother3oard.

/ireless card - The internal wireless card hel"s $ou to connect to the Internet without running a ca3le. Learn a3out diBerent t$"es o internal wireless cards and how the$ are connected to the mother3oard.


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!MO# 5atter$ - The !MO# 3atter$ "ro(ides "ower to the !MO# chi" when the la"to" is turned oB or disconnected orm the wall outlet.

L!D screen - one o the most e"ensi(e "arts in a la"to" com"uter. The L!D screen mounts inside the dis"la$ "anel.I $ou accidentall$ crac%ed the screen0 it has to 3e re"laced. ou cannot re"air a crac%ed screen.

In(erter 3oard - is a "ower su""l$ or the 3ac%light lam" inside the L!D screen. /hen in(erter ails0 the L!D screen goes (er$ (er$ dar% and $ou 3arel$ can see an$ image on the screen. In most la"to"s the in(erter 3oard is mounted inside the dis"la$ "anel 3elow the L!D screen.

5ac%light lam" - is the main source o light in the L!D screen. The 3ac%light lam" is mouted


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iside the screen. /hen the 3ac%light lam" ails0 $ou ha(e to re"lace the whole L!D screen. It2s "ossi3le to re"lace Gust the lam" inside the screen 3ut it2s (er$ hard and has to 3e "erormed 3$ an e"erienced technician.

8ideo ca3le - connectes the La"to" screen to mother3oard. The (ideo ca3le carries data signal or the L!D screen and "ower or the in(erter 3oard.


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/e3 !amera - Man$ modern la"to"s come with a we3 camera 3uilt into the dis"la$ "anel. The we3 camera is not a "art o the L!D screen. The we3 camers is located on a se"arate 3oard and can 3e re"laced se"aratel$ rom the L!D.

Dis"la$ hinges - connect two main "arts o an$ la"to"  the dis"la$ "anel and 3ase assem3l$.

The '!4D! "ower ada"ter - con(erts high (oltage '! "ower rom the mains to low (oltage D! "ower re,uired 3$ the la"to".


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Main 5atter$ - a secondar$ source o "ower or a la"to". The 3atter$ gets charged while the la"to" is "lugged into the mains and %ee"s the la"to" running when it2s un"lugged rom the mains.


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Directions 1. /or% in grou"s using a Personal !om"uter com"lete with "eri"herals. &.
Scoring + 3 " 6 7

1. The com"onents are identifed successull$. &. The "eri"herals are identifed successull$. *. #aet$ "recautions are careull$ o3ser(ed. :. !onnecting the "ro"er connections are "erormed.

= : * & 1

- +cellentl$ Perormed - 8er$ #atisactoril$ Perormed #atisactoril$ Perormed airl$ Perormed - Poorl$ Perormed


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#u)tip)e*choice! Test A!

1. /hat do $ou call the large "rinted circuit 3oard inside $our com"uter6 a7 !PU 37 Mother 3oard c7 8ideo !ard d7 P#U &. /hat t$"e o in"ut de(ice that I common reerred to as mice6 a7 e$3oard 37 !PU c7 5ac%"lanes d7 Mouse *. /hat t$"e o orm actor that was released 3$ Intel in 1AA= was an im"ro(ement o(er the LP9 orm actor6 a7 'T 37 5'5 'T c7 FL9 d7 'T9 :. It defnes a mother3oard2s si;e0 sha"e and how it is mounted to the case6 a7 Mother3oard 37 orm actor c7 L<9 d7 P#U =. It is also %nown as main3oard0 s$stem 3oard or "lanar6 a7 Mother3oard 37 Mother3oard #t$le c7 !PU d7 L9< >. It i the s%eletal rame wor% o $our com"uter s$stem. a7 !o(er 37 !hassis c7 #crews d7 Power su""l$ ?. It "ro(ides "rotection or the internal "arts o the com"uter. a7 !hassis 37 )eset c7 !ase d7 !o(er @. The "art o the com"uter that "ro(ides "ower to the entire s$stem6 a7 !PU 37 Dri(e 5a$ c7 Power #u""l$ d7 )eset A. ' 3utton that allows the user to change the cloc% s"eed o old com"uters. a7 )eset 37 Tur3o c7 L+D d7 Power switch 1C. The "art o the chassis where $ou "lace the internal dri(es. a7 Dri(e 5a$ 37 !o(er c7 !hassis d7 !PU


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Test 2! Identi8cation Direction Identi$ the name o each connector ound in the "ower su""l$. /rite $our answer on a se"arate sheet The power supp)y connectors 1.

&.

*.

:.

=.


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Program4 !ourse  Computer Hardware Servicing NC II Unit o !om"etenc$  Introduce Computer System Module Title  Introducing Computer System &earning Outcome " ! #aintain Computer System ASS'SS#'NT CRIT'RIA!

'##+##M+FT !)IT+)I' 1. '""ro"riate "ersonal "rotecti(e e,ui"ment are identifed0 used and chec%ed 3ased on the standard "rocedures. &. !om"uter normal unction is chec%ed 3ased on correct o"eration and saet$. *. Periodic maintenance o the e,ui"ment is "erormed ollowing manuacturer2s re,uirements. :. #aet$ "recautions are o3ser(ed at all times. R'SORC'S! ',uipment4%aci)iti es

Too)s  Instruments

!om"uter Protecti(e e$e wear "eri"herals /ire stri""er with cutter Des%to" com"uters PliersE'ssorted7 La"to" !om"uter #crew dri(ers E'ssorted7 OH# guidelines #oldering iron4gun Phil. +n(ironmental De-soldering tool "rotection standards lashlight Monitors Twee;ers Mother3oard Mirrors Power su""l$ 'ntistatic wrist wra" Fetwor% de(ice and L'F Tester ca3lings !rim"ing tool Hu3s #otware installer #witches /or% 3ench L'F !ards Magni$ing glass Printers and #canners )outers U#5 lash Dri(es

Supp)ies  #ateria)s

lo""$ dis% !om"act Dis%

R'%'R'NC'S!


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•

htt"44en.wi%i"edia.org4wi%i4!ustomerser(ice

•

htt"44en.wi%i"edia.org4wi%i4Qualit$standard

•

htt"44www.technet.unsw.edu.au4tohss4sw".htm

•

htt"44net.rrc.m3.ca4healthsaet$4saewor%"rocedures

•

'ntoinette ). Marcelo. Understanding P! Hardware. !o"$right &CC? Jemma Inc.

•

htt"44www.em".org4em"asis4augC:4"ro".htm

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htt"44www.la%eland.cc.il.us4Rinternal4"olic$manual41CfscalaBairs41C&> .POL.htm


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IN%OR#ATION SH''T ".+ #aintaining Computer System

Planning and "re"aring s$stematic maintenance "rocedure sa(e time0 mone$ and rustration. It is a good idea and o""ortunit$ to learn the "ro"er care and maintenance o $our com"uter. P! maintenance is an im"ortant to"ic or an$one who owns a P!. Loo%ing ater $our P! "ro"erl$ ensures $ou o trou3le-ree use. )egular P! maintenance also %ee"s the machine2s "erormance o"timal. T$-'S O% #AINT'NANC' -ROC'DR'!

1. Hardware maintenance is the testing and cleaning o e,ui"ment. &. Inormation s$stem maintenance is the routine u"dating o master fles0 such as adding and deleting em"lo$ees and customers and changing credit limits and "roduct "rices. *. #otware or "rogram maintenance is the u"dating o a""lication "rograms in order to meet changing inormation re,uirements. :. Dis% or fle maintenance is the "eriodic reorgani;ing o dis% fles that ha(e 3ecome ragmented due to continuous u"dating. or> p)ace • •

Identi$ ha;ards and ris%s. #aet$ "olicies are eecuted and carried out along with the tas%.

ollowing certain "rocedure is (er$ im"ortant to "erorm a gi(en o"eration or e(olution or in reaction to a gi(en e(ent. The ta3le 3elow shows diBerent elements and their corres"onding "erormance criteria to 3e a3le to identi$ occu"ational health and saet$ ha;ards0 and assess ris%0 as well as ollow instructions and "rocedure in the wor%"lace with minimal su"er(ision. The students will also 3e ca"a3le o "artici"ating and contri3uting to OH# management issues.


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SA#-&' #AINT'NANC' -&AN! #ONTH&$ CO#-T'R #AINT'NANC' -&AN JN'

J&$

A(

S'-T

OCT

NO

D'C

!leaning $our com"uter Dis% s"ace utili;ation #can or (iruses !hec% or hardware and sotware issues -ersona) -rotective Device

There are tools and e,ui"ments used to "rotect the user and the com"uter s$stem. T$"es o "ersonal "rotecti(e de(ices +. 'nti-static de(ices 3. Power surge "rotectors ". Personal e,ui"ments

-ersona) ',uipment 1. #mall "aint 3rush

&. #crew dri(ers *. Pliers and twee;ers :. !om"ressed air =. Handheld (acuum


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Samp)e Hardware Inspection Chec>)ist Computer no!LLLLLLLLLLLLLLLLLLLL

Component

or>ing

Not or>ing

Monitor e$3oard

Mouse

#"ea%er Printer

8oltage regulator

Samp)e Software Inspection Chec>)ist Computer no!LLLLLLLLLLLLLLLLLLLL

Software

or>ing

Not or>ing

'""lications O"erating #$stem


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User "rograms

IN%OR#ATION SH''T ".3 C)eaning $our Computer System Appropriate c)eaning procedures

Pro"er routine cleaning is the easiest0 least e"ensi(e wa$ to "rotect and to etend the lie o a la"to". It is (er$ im"ortant to use the right "roducts and "rocedures when cleaning a la"to". 'lwa$s read all warning la3els on the cleaning "roducts. The com"onents are (er$ sensiti(e and should 3e handled with care. !onsult the com"uer manual or additional inormation and cleaning suggestions. 1ey
1. Turn oB the com"uter &. Disconnect all attached de(ices. *. Disconnect la"to" rom the electrical outlet. :. )emo(e all installed 3atteries.Eor la"to"s7 =. /i"e the %e$3oard with a sot0 lint-ree cloth that is lightl$ moistened with water or com"uter-screen cleaner. enti)ation C)eaning -rocedures

1. Turn oB the com"uter4la"to". &. Disconnect all attached de(ices. *. Disconnect com"uter rom the electrical outlet. :. )emo(e all installed 3atteries. .Eor la"to"s7 =. Use com"ressed air or a non-electrostatic (acuum to clean out the dust rom the (ents and the an 3ehind the (ent. >. Use twee;ers to remo(e an$ de3ris. &CD C)eaning -rocedures

1. Turn oB the com"uter.. &. Disconnect all attached de(ices. *. Disconnect com"uter rom the electrical outlet.


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:. )emo(e all installed 3atteries. .Eor la"to"s7 =. /i"e dis"la$ with a sot0 lint-ree cloth that is lightl$ moistened with a mild cleaning solution. !'UTIOF Do not s"ra$ cleaning solution directl$ onto the L!D dis"la$. Use "roducts s"ecifcall$ designed or cleaning L!D dis"la$s. Touch -ad C)eaning -rocedures

1. Turn oB the com"uter. &. Disconnect all attached de(ices. *. Disconnect com"uter rom the electrical outlet. :. )emo(e all installed 3atteries. .Eor la"to"s7 =. /i"e surace o touch "ad gentl$ with a sot0 lint-ree cloth that is moistened with an a""ro(ed cleaner. Fe(er use a wet cloth. The small screen o a PD' or #mart"hone re,uires s"ecial care. The user o"erates these de(ices 3$ touching the screen with a st$lus. I dirt is "resent0 the PD' ma$ not accuratel$ detect the st$lus "osition or mo(ement. The dirt can also scratch the screen. !lean the screen with a small amount o non-a3rasi(e cleaning solution on a sot cloth. To "rotect the screen surace rom a st$lus0 use sel-adhesi(e screen co(ers. !'UTIOF Use a sot0 lint-ree cloth with an a""ro(ed cleaning solution to a(oid damaging la"to" suraces. '""l$ the cleaning solution to the lintree cloth0 not directl$ to the la"to". %)oppy Drive C)eaning -rocedures

Use a commerciall$-a(aila3le cleaning %it to clean a o""$ dri(e. lo""$ dri(e cleaning %its include "re-treated o""$ discs that remo(e contaminants rom the o""$ dri(e heads that ha(e accumulated through normal o"eration. 1. )emo(e all media rom the o""$ dri(e. &. Insert the cleaning disc and let it s"in or the suggested amount o time. Optica) Drive C)eaning -rocedures

Dirt0 dust0 and other contaminants can collect in the o"tical dri(es. !ontaminated dri(es can cause malunctions0 missing data0 error messages0 and lost "roducti(it$. 1. Use a commerciall$-a(aila3le !D or D8D dri(e cleaning disc. Man$ o""$ disc cleaning %its include an o"tical disc cleaner. Li%e the


68 | P a g e

o""$ disc cleaner0 o"tical disc cleaner %its contain a cleaning solution and a non-a3rasi(e disc that is inserted into the o"tical dri(e. &. )emo(e all media rom the o"tical dri(e. *. Insert the cleaning disc and let it s"in or the suggested amount o time to clean all contact areas.

C)eaning a CD or DD Disc Ins"ect the disc or scratches. )e"lace discs that contain dee" scratches the$ ma$ cause data errors. I $ou notice "ro3lems such as s%i""ing or degraded "la$3ac% ,ualit$ with $our !Ds or D8Ds0 clean the discs. !ommercial "roducts are a(aila3le that clean discs and "ro(ide "rotection rom dust0 fnger"rints0 and scratches. !leaning "roducts or !Ds are sae to use on D8Ds.

1. Hold the disc 3$ the outer edge or 3$ the inside edge. &.
'n o"timal o"erating en(ironment or a om"uter is clean0 ree o "otential contaminants0 and within the tem"erature and humidit$ range s"ecifed 3$ the manuacturer. It is im"ortant to trans"ort or shi" la"to"s careull$. Use a "added com"uter case to store $our la"to". /hen $ou carr$ it0 use an a""ro(ed com"uter 3ag. I the La"to"s and com"uters are trans"orted to man$ t$"es o en(ironments. Dust "articles0 tem"erature0 and humidit$ can aBect the "erormance o a la"to". ollow these guidelines to hel" ensure o"timal o"erating "erormance rom $our com"uters4 la"to" •

!lean the P! re,uentl$ to remo(e dust and "otential contaminants.


69 | P a g e

•

•

•

Do not o3struct (ents or airow to internal com"onents. ' la"to" can o(erheat i air circulation is o3structed. ee" the room tem"erature 3etween := to AC degrees ahrenheit E? to *& degrees !elsius7. ee" the humidit$ le(el 3etween 1C to @C "ercent.

!'UTIOF Use a sot0 lint-ree cloth with an a""ro(ed cleaning solution to a(oid damaging la"to" suraces. '""l$ the cleaning solution to the lintree cloth0 not directl$ to the la"to". Tem"erature and humidit$ recommendations will (ar$ 3$ la"to" manuacturer. ou should research these recommended (alues0 es"eciall$ i $ou "lan to use the la"to" in etreme conditions

',uipment5 Too)s5 and #ateria)s!

Personal !om"uter com"lete with "eri"herals !leaning tools Directions 1.
Scoring + 3 " 6 7

1. Pro"er ins"ection is "erormed. &. The "eri"herals are chec%ed successull$. *. #aet$ "recautions are careull$ o3ser(ed. :. Pro"er cleaning o de(ices are "erormed.

=

- +cellentl$ Perormed


70 | P a g e

: * & 1

- 8er$ #atisactoril$ Perormed #atisactoril$ Perormed airl$ Perormed - Poorl$ Perormed

ritten 'nswer the ollowing ,uestions in $our answer sheet.

1. /h$ do we need to "erorm a s$stem ins"ection6 &. /h$ is it im"ortant to clean $our com"uters hardware6


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#u)tip)e*choice!

1. /hat do $ou call the large screen in a la"to"6 a7 !PU 37 Mother 3oard c7 8ideo !ard d7 L!D &. /hat t$"e o mother3oard design that is common in large P! networ% ser(ers and on other com"uters on which the "rocessor is u"graded re,uentl$6 a7 Mother3oard 37 !PU c7 5ac%"lanes d7 'T9 *. It ser(es as the "ower su""l$ or $our la"to"6 a7 'T 37Power #u""l$ c7 !MO# d7 5atter$ :. It defnes a mother3oard2s si;e0 sha"e and how it is mounted to the case6 a7 Mother3oard 37 orm actor c7 L<9 d7 P#U =. It is also %nown as main3oard0 s$stem 3oard or "lanar6 a7 Mother3oard 37 Mother3oard #t$le c7 !PU d7 L9< >. It i the s%eletal rame wor% o $our com"uter s$stem. a7 !o(er 37 !hassis c7 #crews d7 Power su""l$ ?. It "ro(ides "rotection or the internal "arts o the com"uter. a7 !hassis 37 )eset c7 !ase d7 !o(er @. The "art o the com"uter that "ro(ides "ower to the entire s$stem6 a7 !PU 37 Dri(e 5a$ c7 Power #u""l$ d7 )eset


72 | P a g e

A. ' 3utton that allows the user to Turn oB the com"uter. a7 )eset 37 Tur3o c7 L+D d7 Power switch 1C. The "art o the chassis where $ou "lace the Mother3oard dri(es. a7 Dri(e 5a$ 37 !o(er c7 !hassis d7 !PU


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Introduce Computer System Grade 9 TLE - ICT

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