What is a semiconductor and why are they useful?

Related questions

1. Does Qualcomm buy NXP?
2. Is nexperia an NXP?
3. Where is NXP based?
4. Where is NXP Semiconductors?
5. Did Qualcomm acquire NXP?
6. What does NXP stand for?
7. When did Motorola become Freescale?
8. Is Broadcom a Chinese company?
9. Where are TSMC fabs?
10. Is NXP fabless?

Tags

1. #material
2. #impurities
3. #large
4. #causing
5. #elements
6. #gallium
7. #process
8. #semiconductors
9. #amounts
10. #compounds
11. #arsenide
12. #small
13. #conductivity
14. #changes
15. #doping
16. #selenide
17. #germanium
18. #silicon
19. #called
20. #cadmium
21. #added