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Unit 1.3 v2

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Mind Map on Unit 1.3 v2, created by Sam Mann on 19/01/2018.
Sam Mann
Mind Map by Sam Mann, updated more than 1 year ago
Sam Mann
Created by Sam Mann about 7 years ago
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Unit 1.3 v2
  1. There are 3 Main types of storage Optical, Solid State and Magnetic
    1. Optical
      1. Optical Storage was used for CD’s and DVD’s because once they are given to someone else it can’t be edited
        1. This use to be the way people had music and how they watched dvds
        2. Solid State
          1. Solid State is the type of secondary storage people would use for their Phones
            1. It is very cheap and Robust the use it for scanners
            2. Made of microchips so it can process data faster this makes work easier
            3. Magnetic
              1. They can be modified so it can be read only
                1. This is when Magnetic sockets go in and out of the drive
                2. Secondary Storage is non volatile so the data won’t delete after every reboot
                3. We need secondary storage because we can’t hold enough data with RAM.
                  1. When Buying Secondary Storage
                    1. Is it Cheap?
                      1. Is it Robust?
                        1. Is it Portable?
                          1. Is it Durable?
                            1. Is it fast?
                              1. How much data can it hols
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