revision 7.2

revision 7.2

1. processing

   • carrying out a set of instructions

2. memory

   • a part of the computer that stores all the data

3. storage

   • a storage device is a piece of computer equipment that is used to store data

4. hardware

   • the physical parts of a computer
   • graphics card, CD drive

5. input

   • a piece of computer hardware
   • used to provide data

6. output

   • any piece of computer hardware used to communicate the results of data

7. magnetic storage

   • advantages
     • cheap
     • fast access compared to other storage devices
   • disadvantages
     • can be easily damaged
     • slow down and break over time
     • slower access
   • characteristics
     • the main storage device in most computers

8. solid state storage

   • advantages
     • compact
     • portable
     • high speed of data transfer
     • low power
   • disadvantages
     • more vulnerable
     • more expensive

9. optical storage

   • advantages
     • portable
     • can hold alot of data
     • better quality
   • disadvantages
     • more expensive
     • can loose data when scratched

10. secondary storage keywords

    • speed
      • how quickly data can be accessed
    • durability
      • how tough the storage is
    • cost
      • per storage unit
      • price or gigabytes or megabytes
    • portability
      • how easy it is to move from 1 computer to another