Secondary Storage Flashcards

1
Q

What is Optical Storage?

A

A 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

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2
Q

What is Magnetic Storage?

A

Read/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.

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3
Q

What is Solid State Storage?

A

This is made of microchips (switches).

The state of the switches determine if a 1, or 0 is stored.

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4
Q

Why do we need Secondary Storage?

A
  • To access it again later
  • To use software
  • To interact with the computer
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5
Q

What would happen without Secondary Storage?

A
  • Software would need to be installed each time we use it

- You couldn’t save any files, data, images, videos etc.

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6
Q

What is it important to look at when buying a storage device?

A
  • Capacity
  • Storage
  • Portability
  • Durability
  • Cost
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7
Q

What is Cache and what does it do?

A

Cache is the CPU’s personal storage. It makes it quicker for the CPU to collect the data from there instead of going to the RAM or secondary storage.

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