What is the Silicon Valley of USA famous for?

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4. Where is HBO Silicon Valley filmed?
5. How did Silicon Valley start?
6. Why is it called Silicon Valley?
7. Is hooli a real company?
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Tags

1. #silicon
2. #technology
3. #united
4. #companies
5. #southern
6. #valley
7. #intel
8. #cisco
9. #california
10. #about
11. #oracle
12. #francisco
13. #largest
14. #world
15. #including
16. #google
17. #northern
18. #apple
19. #states
20. #region