Why is Silicon Valley called Silicon Valley?

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Tags

1. #companies
2. #gaining
3. #business
4. #started
5. #which
6. #fransisco
7. #semiconductor
8. #silicon
9. #electronic
10. #based
11. #computer
12. #technology
13. #their
14. #valley
15. #constituent
16. #popularity
17. #newpaper