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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 50 · 40 questions
TalentJR

Remember (One chip, one job): Microcontroller = processor + memory + input/output pins on one chip. Board parts: USB port (power and code), pins, reset button, power LED, main chip, voltage regulator. Write the program → upload over USB → it runs its loop for ever; power by USB or a small battery.

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  1. 1.Which of these usually has a microcontroller inside? (a) a bicycle bell (b) a digital thermometer (c) a plain wall switch (d) a wind-up toy
  2. 2.Which job is done by the main chip? (a) runs the program (b) shows the board is on (c) keeps the voltage steady (d) connect sensors and LEDs
  3. 3.🤖 Microcontroller or laptop: which one uses very little power? (a) laptop (b) microcontroller
  4. 4.True or false: a microcontroller needs much more power. (a) False (b) True
  5. 5.🤖 Does a microwave oven usually have a microcontroller inside? (a) No (b) Yes
  6. 6.🧭 Which part of a microcontroller board shows the board is on? (a) the pins (b) the power LED (c) the reset button (d) the voltage regulator
  7. 7.Which job is done by the power LED? (a) runs the program (b) shows the board is on (c) connect sensors and LEDs (d) keeps the voltage steady
  8. 8.Which of these usually has a microcontroller inside? (a) a plain wall switch (b) a bicycle bell (c) a spinning top (d) a microwave oven
  9. 9.🤖 Microcontroller or laptop: which one runs one small program? (a) microcontroller (b) laptop
  10. 10.Which job is done by the reset button? (a) restarts the program (b) brings power and code (c) shows the board is on (d) keeps the voltage steady
  11. 11.🤖 Does a plain wall switch usually have a microcontroller inside? (a) No (b) Yes
  12. 12.Which of these has no microcontroller inside? (a) a candle (b) a TV remote (c) a toy robot (d) a smart watch
  13. 13.🤖 Microcontroller or laptop: which one has no screen of its own? (a) laptop (b) microcontroller
  14. 14.🤖 Does a digital thermometer usually have a microcontroller inside? (a) No (b) Yes
  15. 15.🤖 Microcontroller or laptop: which one has a built-in keyboard? (a) microcontroller (b) laptop
  16. 16.🤖 When the main loop of a microcontroller program ends, what happens? (a) the board breaks (b) it starts again (c) it stops forever (d) it deletes itself
  17. 17.🤖 Does a candle usually have a microcontroller inside? (a) Yes (b) No
  18. 18.True or false: a wind-up toy usually has a microcontroller inside. (a) False (b) True
  19. 19.Which job is done by the USB port? (a) connect sensors and LEDs (b) runs the program (c) brings power and code (d) keeps the voltage steady
  20. 20.Which of these has no microcontroller inside? (a) a washing machine (b) a TV remote (c) a digital thermometer (d) a hand pump
  21. 21.🤖 Does a smart watch usually have a microcontroller inside? (a) No (b) Yes
  22. 22.True or false: a spinning top usually has a microcontroller inside. (a) False (b) True
  23. 23.Which of these usually has a microcontroller inside? (a) a wind-up toy (b) a digital alarm clock (c) a bicycle bell (d) a hand pump
  24. 24.🤖 Microcontroller or laptop: which one runs many apps at once? (a) laptop (b) microcontroller
  25. 25.🧭 Which part of a microcontroller board runs the program? (a) the power LED (b) the USB port (c) the main chip (d) the pins
  26. 26.Which job is done by the voltage regulator? (a) runs the program (b) keeps the voltage steady (c) brings power and code (d) shows the board is on
  27. 27.Which of these usually has a microcontroller inside? (a) a hand pump (b) a washing machine (c) a plain wall switch (d) a candle
  28. 28.True or false: a TV remote usually has a microcontroller inside. (a) False (b) True
  29. 29.True or false: a microwave oven usually has a microcontroller inside. (a) False (b) True
  30. 30.True or false: a laptop has a built-in keyboard. (a) True (b) False
  31. 31.Which of these has no microcontroller inside? (a) a smart watch (b) a digital alarm clock (c) a toy robot (d) a plain wall switch
  32. 32.True or false: a smart watch has no microcontroller inside. (a) False (b) True
  33. 33.🤖 Does a wind-up toy usually have a microcontroller inside? (a) Yes (b) No
  34. 34.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the main chip (b) the voltage regulator (c) the USB port (d) the pins
  35. 35.True or false: a toy robot has no microcontroller inside. (a) True (b) False
  36. 36.True or false: a laptop runs one small program. (a) True (b) False
  37. 37.🤖 Does a TV remote usually have a microcontroller inside? (a) No (b) Yes
  38. 38.🤖 Microcontroller or laptop: which one needs much more power? (a) microcontroller (b) laptop
  39. 39.True or false: a microcontroller has a built-in keyboard. (a) False (b) True
  40. 40.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the main chip (b) the power LED (c) the reset button (d) the pins

Answer key

  1. a digital thermometer
  2. runs the program
  3. microcontroller
  4. False
  5. Yes
  6. the power LED
  7. shows the board is on
  8. a microwave oven
  9. microcontroller
  10. restarts the program
  11. No
  12. a candle
  13. microcontroller
  14. Yes
  15. laptop
  16. it starts again
  17. No
  18. False
  19. brings power and code
  20. a hand pump
  21. Yes
  22. False
  23. a digital alarm clock
  24. laptop
  25. the main chip
  26. keeps the voltage steady
  27. a washing machine
  28. True
  29. True
  30. True
  31. a plain wall switch
  32. False
  33. No
  34. the voltage regulator
  35. False
  36. False
  37. Yes
  38. laptop
  39. False
  40. the pins

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