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  • Phonograph plays by physical contact between record groove and sharp stylus.
  • CD plays using laser light reflected from pits in concentric tracks on metal film embedded in transparent plastic disc.
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Q: What is the difference between a phonograph and CD's today?
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What is all the difference between a CD and DVD?

CDs are for music while DVDs are for movies


This may be dumb but what is the difference between CD's?

Some CDs have music, some have games, and some have pictures.


What is the difference between a blu ray drive and a cd drive?

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Gosh, a question like that makes me feel old! Before CDs there were cassettes, and records at 33,45, and 78 rpm. Even earlier there were phonograph cylinders.


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Both the DVD and Video CD are capable of storing digital video. The major difference between the two is the quality and length of the digital video that they store.


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James has 52 cds and Helen has 104 cds.


What is the difference between CDs and VHS?

CD is a red-book digital audio storage standard and VHS is an analog video storage standard. CDs record data digitaly on a disk read with a lazer, whereas VHS tapes are analog and are read with an electromagnetic pickup.


What is the Difference between a CD and DVD when burning pictures?

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What did Peter Carl Goldmark invent?

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What is the difference between Cds DVDs and Blu ray discs?

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What is the difference between a negotiable certificate of deposit and a non negotiable certificate of deposit?

A negotiable CD is a transferable CD. This means unlike traditional non-negotiable CDs, it can be sold in the secondary markets to other investors. The investment amount on negotiable CDs is also substantially larger than non-negotiable CDs. It is mainly targeted at institutional investors and companies.


What is the difference between a negotiable certificate of deposit and a non-negotiable certificate of deposit?

A negotiable CD is a transferable CD. This means unlike traditional non-negotiable CDs, it can be sold in the secondary markets to other investors. The investment amount on negotiable CDs is also substantially larger than non-negotiable CDs. It is mainly targeted at institutional investors and companies.