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- 1OpticalA laser light creates marks in a pattern on the disk .
A laser light detects where the marks are and translates this into a readable format. - 2MagneticRead/write move across the medium and change how magnetised that part of the medium is.
E.g. one level of magnetism will be a 1, a second will be a 0
- 3Solid StateThis is made of microchips (switches)
The state of the switches determine if a 1, or 0 is stored.
- 4General Storage Charachteristics
- 5What type of storage is the most expensive per GB? (From Most Expensive to Least Expensive.)1.Solid State
2.Optical
3.Magnetic - 6What type of storage is the most reliable?Solid State
- 7What type of storage is the least durable?Magnetic
- 8Why do we need secondary storage?To store data, files and software for future use.
- 9Define Secondary StorageAuxiliary memory, also known as auxiliary storage, secondary storage, secondary memory or external memory, is a non-volatile memory (does not lose stored data when the device is powered down) that is not directly accessible by the CPU.
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- GCSE Computing Fichas sobre Sin título, creado por Yusuf Mahi el 25/11/2016.
- Creado por
- Yusuf Mahi
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