STORAGE DEVICE

254sanchi
Mind Map by 254sanchi, updated more than 1 year ago
254sanchi
Created by 254sanchi about 6 years ago
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Description

it is about storage devices

Resource summary

STORAGE DEVICE
  1. MAIN MEMORY
    1. RAM
      1. ROM
        1. stores data being processed by CPU
          1. used to store temporarily
          2. BACKING STORAGE
            1. DIRECT ACCESS DEVICE
              1. DVD
                1. HARD DISC
                2. SERIAL AND SEQUENCE DEVICE
                  1. TAPE DRIVE
                  2. THREE TYPES
                    1. OPTICAL
                      1. save data as patterns of dots that can be read using light.
                      2. MAGNETIC
                        1. store data in the form of tiny magnetised dots
                        2. SOLID STATE
                          1. no moving parts
                            1. based on electronic circuits
                          2. non-volatile
                            1. stores permenantly
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