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Computing 1.2 and 1.3 (1.2 (Flash Memory (Flash Memory also known Solid…

- - - - It is called Volatile Memory because when RAM loses power all the data is lost and cannot be retrieved
    - - It uses DRAM which is slower the SRAM and constantly needs to be refreshed however it is cheaper and requires less transistors and capacitors. It is the more common type so you have more in a computer
    - - It uses SRAM which is faster the DRAM and does not constantly need to be refreshed however it is more expensive and requires 6 times transistors and capacitors. It is the less type so you have less in a computer
  - - - The memory is non-volatile so does not get lost when no power is running through it
      - When the computer is turned on the BIOS or Basic Input Output System which runs a POST(Power On Self Test) check to see if the compute is healthy. If it is then the bootstrap program is loaded from ROM to RAM. The bootstrap locates the OS in the Hardrive and it is loaded into RAM. The OS takes over and finds the boot files. These include all the user customised options such as wallpaper
  - - - Because the RAM is faster than the Hardrive their is delay between the swapping. If the computer has to swap out to much, it will slow down and could crash all together. This is called Disk Thrashing
  - - - These include SD cards, ROM Chips, Pen Drives
- - - - 8 bit
    - - 4 bit
    - - For example one megabyte is equivalent to 1024 kilobyte
      - Let'ts say a bool has 90,000 words and each word takes up 7 characters each character is 2 bytes. This means it would be 2x7x90,000 = 1,260,000 Bytes. Covert to = KB so divide by 1024 to get 1230 KB
  - - - Speed
        
        Slower read times
      - Portability
        
        Easy to distribute
      - Reliability
        
        Not very reliable
      - Durability
        
        Easily scrached and damaged
      - Cost
        
        Relatively Cheap
      - Capacity
        
        Decent Capacity
    - - Durability
        
        Very durable if treated correctly. Can be damaged by dropping or magnetic fields
      - Portability
        
        Not overly portable
      - Capacity
        
        Largest Capacity
      - Cost
        
        Cheapest type
      - Reliability
        
        Great for archiving if well kept
      - Speed
        
        Slowest type unless in a internal hard drive
    - - Durability
        
        Very Durable as it has no moving parts
      - Portability
        
        Portable in small devices
      - Capacity
        
        Medium Capacities
      - Cost
        
        Most expensive
      - Reliability
        
        It has a limited number of read and write cycles which limits its useful time, However the SS are usually very reliable.
      - Speed
        
        Fastest type of storage