What the differences of compact disc and blu-ray disc?

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blu rays use higher frequency light (blue rather than red), meaning that each bit of data can take up a smaller area of the disc, as higher frequency allows a higher resolution.
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What is a compact disc?

Answer . A compact disc is a secondary-storage disc for computers. It's capacity is about 700 MegaBytes..

What is the difference between CDs DVDs and Blu-ray discs?

CDs, DVDs and BluRay discs all work in similar ways. The primary difference is the data density on each disc. CD is the lowest density. A DVD can store several times the amoun

What year was the compact discs invented?

The original prototypes for the compact disc were madeindependently in the mid-to-late 1970s by Phillips and Sony. Thetechnology was in place by 1979 but would not become comm

How is the Optical disc similar to the compact disc?

A compact disc is a type of optical disc. "Optical disc" is an umbrella term for any type of storage media which uses optical technology (as opposed to magnetic) for data s

What is the different between compact disc and driver CD?

A compact disc, also known as "CD" is simply a disc for CD drives as we know it. it may have music, movies, word documents, picture etc. or no data at al stored on it. A "dr

Cost of making a compact disc?

It would depend on what KIND of CD you want to make. The blank CD itself is the least expensive part; purchased in bulk, they go for 15-20 cents apiece. Assuming you already h

What is the difference between compact discs and hard disk?

A CD is a small removable and portable plastic based disk with a thin layer of metal that reflects the laser that reads it. The hard disk is solid metal and spins inside a