Книга: Advanced PIC Microcontroller Projects in C

1.25 Exercises

1.25 Exercises

1. What is a microcontroller? What is a microprocessor? Explain the main difference between a microprocessor and a microcontroller.

2. Identify some applications of microcontrollers around you.

3. Where would you use an EPROM memory?

4. Where would you use a RAM memory?

5. Explain the types of memory usually used in microcontrollers.

6. What is an input-output port?

7. What is an analog-to-digital converter? Give an example of how this converter is used.

8. Explain why a watchdog timer could be useful in a real-time system.

9. What is serial input-output? Where would you use serial communication?

10. Why is the current sink/source capability important in the specification of an output port pin?

11. What is an interrupt? Explain what happens when an interrupt is recognized by a microcontroller?

12. Why is brown-out detection important in real-time systems?

13. Explain the difference between an RISC-based microcontroller and a CISC-based microcontroller. What type of microcontroller is PIC?

14. Convert the following decimal numbers into binary:

 a) 23 b) 128 c) 255 d) 1023

 e) 120 f) 32000 g) 160 h) 250

15. Convert the following binary numbers into decimal:

 a) 1111 b) 0110 c) 11110000

 d) 00001111 e) 10101010 f) 10000000

16. Convert the following octal numbers into decimal:

 a) 177 b) 762 c) 777 d) 123

 e) 1777 f) 655 g) 177777 h) 207

17. Convert the following decimal numbers into octal:

 a) 255 b) 1024 c) 129 d) 2450

 e) 4096 f) 256 g) 180 h) 4096

18. Convert the following hexadecimal numbers into decimal:

 a) AA b) EF c) 1FF d) FFFF

 e) 1AA f) FEF g) F0 h) CC

19. Convert the following binary numbers into hexadecimal:

 a) 0101 b) 11111111 c) 1111 d) 1010

 e) 1110 f) 10011111 g) 1001 h) 1100

20. Convert the following binary numbers into octal:

 a) 111000 b) 000111 c) 1111111 d) 010111

 e) 110001 f) 11111111 g) 1000001 h) 110000

21. Convert the following octal numbers into binary:

 a) 177 b) 7777 c) 555 d) 111

 e) 1777777 f) 55571 g) 171 h) 1777

22. Convert the following hexadecimal numbers into octal:

 a) AA b) FF c) FFFF d) 1AC

 e) CC f) EE g) EEFF h) AB

23. Convert the following octal numbers into hexadecimal:

 a) 177 b) 777 c) 123 d) 23

 e) 1111 f) 17777777 g) 349 h) 17

24. Convert the following decimal numbers into floating point:

 a) 23.45 b) 1.25 c) 45.86 d) 0.56

25. Convert the following decimal numbers into floating point and then calculate their sum:

 0.255 and 1.75

26. Convert the following decimal numbers into floating point and then calculate their product:

 2.125 and 3.75

27. Convert the following decimal numbers into BCD:

 a) 128 b) 970 c) 900 d) 125

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