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1.3.7 Microphone
Anoicromhontn(ornoic)niynanninmutndtvictnthatntaktyntSmicallSntaktynyoundnayninmut.nnAlthoughnhuoannvoictniynthtn
ooytncoooonnforonofnyoundninmut,nanioalnvoictnandnyoundntoanatngnfroonthtnflownofnwattr,nair,noovtotntnofn
trtty,nttc.,noaSnalyonbtnmayytdntonancoomuttrnayninmut).nThtnanalogouynyoundnyignalynartnconvtrttdntondigitalnforonforn
ytoragtnandnmroctyying.n
1.3.8 Bar Code Reader
A barcode tncodtyninforoatonninnthtnforonofnanytqutnctnofnlintynofndifftrtntnltngthy,nhtightynandnwidthy.nAnbarncodtn
rtadtrnfttchtyninforoatonnaboutnanmroductnornanytrvictnbSnycanningnitynbarncodt.nThtnytaltdnmackttynatnanyhommingnoalln
tSmicallSnincludtnanbarcodtncontainingninforoatonnaboutnthtnmroductynandnthtirnmricty.
An QR coden (Quickn Rtymonytn codt)n iyn an two-diotnyionaln barn codtn thatn cann btn ycanntdn withn an yoartmhontn
caotra.n An QRn codtn tSmicallSn containyn oortn inforoatonn thann an tSmicaln barn codtn andn iyn oortn rtyiytantn ton noiytn
andn martaln occluyion.n An QRn codtn oaSn includtn an linkn ton an wtbyitt,n maSotntn gattwaS,n caltndarn tvtnt,n orn oobiltn
ammlicaton.
1.3.9 Biometric Sensor
AnbioottricnytnyornycanynthtnmhSyicalncharacttriytcynofnhuoannbtingy,nyuchnaynfingtrmrintynandntSty.n uchnytnyorynartn
widtlSnuytdntonoarkntomloStty’natttndanctninnorganiyatonynandntonmrovidtnrtytricttdnacctyyntonofficty.n
O R
KtSboard
Mouyt canntr
Input Devices
Barn odtn Trackball
Rtadtr
MI R
JoSytck
TouchnPantl Touchmad
Fign1.4:nInmutnDtvicty
Name the input device for the following:
(i) Converts an image on paper to digital form.
(ii) A device used to automate the evaluation of multiple-choice questions, whose answers have been
marked by darkening circles against the correct answers.
(iii) A device that scans the fingerprint of employees for attendance.
1.4 Output Devices
Thtnoutmutndtvictynrtctivtndatanfroonancoomuttrnandndtlivtrnthtndtyirtdnoutmutnonnanyuitabltndtvictnfornanuytr.nnItn
convtrtyndigitalndatanintonanhuoan-undtrytandabltnforo.n ootnofnthtncoooonlSnuytdnoutmutndtvictynartndtycribtdn
btlow:
12 Touchpad Informatics Practices-XI

