How does Arduino serial work?

Related questions

1. Why do we use 9600 baud rate?
2. How do I save Arduino serial monitor data?
3. What is Arduino baud rate?
4. What are Arduino pins?
5. What is Arduino serial monitor?
6. Is higher baud rate better?
7. How does a UART work?
8. What is digitalRead in Arduino?
9. What determines baud rate?
10. How does baud rate differ from bits per second?

Tags

1. #sends
2. #register
3. #transmitted
4. #internal
5. #trying
6. #placed
7. #routine
8. #serial
9. #called
10. #print
11. #interrupt
12. #usart
13. #hardware
14. #buffer
15. #transmit
16. #empty