صفحه 1:
HOW CDs WORK ?
3
Attapon Ashinetongkhum 48057053)
Payveen Suwannawat 48050275
Surawut Suntalodom 48057692)
Pipat Shutishupibul 48057478
Pipatpong Tuntivaranon 48050249
صفحه 2:
Introduction of CDs
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1 كع رد
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صفحه 3:
017075010018
Tofitmorethan 783meg
es(MB)ontoa disco
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tameter requiresthatth
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aminch(7.2mm) thick.
7
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صفحه 4:
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0 ل زا ا anaes
ingfromtheinsideof the disctothe outside.
Thefact that thespiraltrackstartsat thec
esata ا Le De aa as eee aaa CD
ال ل
ereare now plastic baseball cardsandbust
nesscardsthat youcanputina CD player.
صفحه 5:
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areeacho.5 microns wide,aminimum of 0.8
amicronslongand725 nanometers high. (A
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ك6 و ی ری ریا
LE ERTS
صفحه 6:
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ار ی تال متس تین a nto
epending on whichtrackis being read
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andalenssystemfocusinonandreadthebumps,
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fat thelaser sheamcan follow thespiraltrack. Thet
ey ne ame nen Tne ی دیدرت و
Ce mea ues
صفحه 7:
WhattheCD Player Does: La
Soa prea
Inside the CD player, thereia good bit of computer
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derstandable data blocksandsending themeithe
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صفحه 8:
0” تا رتست
eping thelaser beamc
مت ید b eae
rack, This centering?
aaa tS
gsystem. Thetrackin
۲ رت درد
eCD,hastocontinual
علانكء 1716077 زا 05 muta
۷۵۶
صفحه 9:
CDEncodingissues:
Bre ease یر PD)
۲ Maa eae ce sara aaa Leama)
ل ل
earenobumpsinthedata track
= Becausethelaser wants to heabletomove between so
CY aaa Tae CU Berea ae ana ABA GLY fe
hedrive whereitis onthedisc.
= Because thelaser maymisreada bump, thereneedito
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se
صفحه 10:
“THANK YOU”