Technical support services and maintenance for information agencies

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Across
  1. 2. run on Mac in tosh computers
  2. 3. control the input and output in the computers
  3. 5. LINUX distribution
  4. 7. rectangular boxes(window)used to display information and run application
Down
  1. 1. instruct by hardware
  2. 4. latest OS version from Microsoft
  3. 6. Originally written for main frame computers in the early 70s