KNOCK YOUR BRAIN

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Across
  1. 4. Credited with the idea of using punch cards
  2. 6. HeadQuarters of samsung is located at?
  3. 9. President of Yahoo
Down
  1. 1. Chair man of Twitter
  2. 2. Jeff Bazo's is the CEO of _______?
  3. 3. Co-Founder of Microsoft
  4. 5. CEO of whatsapp
  5. 7. Vital software for viewing internet sites
  6. 8. Lee Byung-Chul is the founder of ______?
  7. 10. Tim Cook is the CEO of?