Secondary Storage devices

1. 1What is an optical disc?

   1. AA magnetised rigid plate or stack of plates with heads to read the data as the platters spin around. The data is encoded into bits and written onto the surface as a series of changes in the direction of the magnetisation. The data is read by detecting the changes in direction
   2. BThey are a useful lightweight media for transporting data and programs. Examples include CD, DVD and Blu-Ray
2. 2What is a Solid State storage device

   1. AThis type of storage uses ‘serial access’ to find a piece of data. This means that to find a specific point on the tape the user must start at the beginning of the tape and fast forward, rewind and play until they find the data they are looking for.
   2. BThis form of memory has no moving parts. It can be internal or external to the computer.

Description

OCR Computing A451- Fundamentals of a computer system (Topic 2- Hardware) Quiz on Secondary Storage devices, created by Laura Ridley on 18/06/2015.

Author

Laura Ridley

Language

English

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a451- fundamentals of a computer systemtopic 2- hardwareocr computing

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