Computer terminology

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Across
  1. 5. the result of a thing put in a system
  2. 7. what is taken or put into a system
  3. 8. random access memory
  4. 9. operate on data in means of a program
  5. 10. the mechanism that retains data
  6. 13. what programs hardware
Down
  1. 1. the brain of the computer
  2. 2. a circuit board inside general purpose systems
  3. 3. external parts of a computer
  4. 4. small dots that make up and image
  5. 6. amplifies and switches electrical signals
  6. 11. operating system
  7. 12. universal serial bus