Optical Drive

Optical Drive

1. What's an Optical Drive?

   • An optical drive is a disc drive that reads or writes data using laser lights or electromagnetic waves.
   • Some optical drives can only read from discs but more recent drives can both read and write.

2. Where would you find an optical Drive?

   • You would find an optical drive in CD and DVD players as well as DVD recorders.
   • Optical drives are also very common in computers as they are used to read software.

3. The difference between volatile and non-volatile

   • Volatile means that when the computer is turned off, the data on it is wiped for example RAM is volatile as the data on it is lost when the computer is turned off. Volatile also means unstable.
   • Non-Volatile means the data is kept when the computer is turned off e.g. a hard drive is non volatile as it stores the data after the computer is off.

4. What's the differences between DVD and Blu ray?

   • Blu ray uses a blue-violet laser instead of the red laser used on DVDs. This allows blu ray discs to hold much more information .
   • Blu ray disks cannot be played on a DVD however DVDs can be played on a blu ray and they will also be enhanced as a result.

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