Question

Explain the working of cd rom and dvd rom with the help of a block diagram​

Answer 1

Answer:

DVD-ROM (Digital Versatile Disk Read Only Memory): DVD-ROM uses the same principle as a CD-ROM for reading and writing. However, a smaller wavelength laser beam is used. The total capacity of DVD-ROM is 8.5GB. In double-sided DVD-ROM two such disks are stuck back to back which allows recording on both sides.

Answer 2

Answer:

DVD-ROM uses the same principle as a CD-ROM for reading and writing. However, a smaller wavelength laser beam is used. The total capacity of DVD-ROM is 8.5GB. In double-sided DVD-ROM two such disks are stuck back to back which allows recording on both sides. This requires the disk to be reversed to read the reverse side. With both side recording and with each side storing 8.5GB the total capacity is 17GB.

Explanation:

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