Keyword revision

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Across
  1. 3. Coordinates all activities within the CPU
  2. 4. Physical component of the PC
  3. 6. e.g. Windows,IOS
  4. 7. Computer program that is designed to run a computer's hardware and application programs
  5. 8. Controls the timing of the Processor
Down
  1. 1. All of the devices and secondary storage
  2. 2. Made up of hardware and software
  3. 5. Temporarily hold data