KNOCK YOUR BRAIN

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Across
  1. 2. Headquarters of samsung is located at?
  2. 4. Credited with the idea of using punch cards
  3. 7. President of Yahoo
  4. 8. Co-Founder of microsoft
  5. 9. Jeff Bazo's is the CEO of?
Down
  1. 1. Vital software for viewing internet sites
  2. 3. CEO of whatsapp
  3. 4. Chairman of twitter
  4. 5. Tim Cook is the CEO of?
  5. 6. Lee Byung-Chul founded?