How do Arduino pins work?

Related questions

1. What is TTL Arduino?
2. Is CMOS faster than TTL?
3. What is VCC Arduino?
4. What is the best programming language for Arduino?
5. What is the difference between TTL RS 232 and RS 232?
6. Can TTL drive CMOS?
7. Is TTL a UART?
8. What is FTDI Arduino?
9. How much voltage does Arduino?
10. What is max232 IC?

Tags

1. #voltage
2. #either
3. #designed
4. #configured
5. #needs
6. #arduino
7. #inputs
8. #according
9. #outputs
10. #state
11. #digital