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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 187 · 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.🤖 When the main loop of a microcontroller program ends, what happens? (a) it deletes itself (b) it stops forever (c) it starts again (d) the board breaks
  2. 2.True or false: a laptop runs one small program. (a) True (b) False
  3. 3.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the power LED (b) the voltage regulator (c) the main chip (d) the reset button
  4. 4.True or false: a microcontroller has no screen of its own. (a) True (b) False
  5. 5.Which of these usually has a microcontroller inside? (a) a candle (b) a plain wall switch (c) a bicycle bell (d) a digital alarm clock
  6. 6.🧭 Which part of a microcontroller board restarts the program? (a) the reset button (b) the USB port (c) the power LED (d) the pins
  7. 7.True or false: a digital alarm clock usually has a microcontroller inside. (a) False (b) True
  8. 8.Which job is done by the USB port? (a) brings power and code (b) keeps the voltage steady (c) connect sensors and LEDs (d) runs the program
  9. 9.True or false: a laptop has no screen of its own. (a) True (b) False
  10. 10.🤖 Microcontroller or laptop: which one needs much more power? (a) laptop (b) microcontroller
  11. 11.🤖 Does a TV remote usually have a microcontroller inside? (a) Yes (b) No
  12. 12.🤖 Does a smart watch usually have a microcontroller inside? (a) No (b) Yes
  13. 13.Which job is done by the power LED? (a) shows the board is on (b) runs the program (c) restarts the program (d) brings power and code
  14. 14.True or false: a laptop needs much more power. (a) True (b) False
  15. 15.Which of these has no microcontroller inside? (a) a toy robot (b) a digital thermometer (c) a washing machine (d) a spinning top
  16. 16.True or false: a bicycle bell usually has a microcontroller inside. (a) True (b) False
  17. 17.🤖 Microcontroller or laptop: which one runs one small program? (a) microcontroller (b) laptop
  18. 18.True or false: a microwave oven has no microcontroller inside. (a) True (b) False
  19. 19.True or false: a laptop has a built-in keyboard. (a) True (b) False
  20. 20.🤖 Does a plain wall switch usually have a microcontroller inside? (a) No (b) Yes
  21. 21.True or false: a microcontroller has a built-in keyboard. (a) False (b) True
  22. 22.🤖 Does a digital thermometer usually have a microcontroller inside? (a) Yes (b) No
  23. 23.🤖 Does a spinning top usually have a microcontroller inside? (a) No (b) Yes
  24. 24.True or false: a plain wall switch usually has a microcontroller inside. (a) False (b) True
  25. 25.🤖 Microcontroller or laptop: which one uses very little power? (a) laptop (b) microcontroller
  26. 26.🤖 Does a washing machine usually have a microcontroller inside? (a) No (b) Yes
  27. 27.True or false: a microcontroller needs much more power. (a) True (b) False
  28. 28.Which of these usually has a microcontroller inside? (a) a spinning top (b) a candle (c) a digital thermometer (d) a wind-up toy
  29. 29.🤖 Microcontroller or laptop: which one has no screen of its own? (a) microcontroller (b) laptop
  30. 30.🤖 Does a toy robot usually have a microcontroller inside? (a) No (b) Yes
  31. 31.Which of these has no microcontroller inside? (a) a washing machine (b) a candle (c) a toy robot (d) a TV remote
  32. 32.Which job is done by the voltage regulator? (a) connect sensors and LEDs (b) runs the program (c) shows the board is on (d) keeps the voltage steady
  33. 33.True or false: a hand pump usually has a microcontroller inside. (a) False (b) True
  34. 34.Which job is done by the reset button? (a) runs the program (b) shows the board is on (c) brings power and code (d) restarts the program
  35. 35.🤖 Which is a safe power source for a beginner microcontroller board? (a) a wall socket directly (b) a 230 V cable (c) bare mains wires (d) USB or a 9 V battery
  36. 36.True or false: a microcontroller uses very little power. (a) False (b) True
  37. 37.Which of these has no microcontroller inside? (a) a TV remote (b) a smart watch (c) a bicycle bell (d) a microwave oven
  38. 38.🧭 Which part of a microcontroller board brings power and code? (a) the reset button (b) the voltage regulator (c) the power LED (d) the USB port
  39. 39.True or false: a smart watch usually has a microcontroller inside. (a) True (b) False
  40. 40.True or false: a hand pump has no microcontroller inside. (a) False (b) True

Answer key

  1. it starts again
  2. False
  3. the voltage regulator
  4. True
  5. a digital alarm clock
  6. the reset button
  7. True
  8. brings power and code
  9. False
  10. laptop
  11. Yes
  12. Yes
  13. shows the board is on
  14. True
  15. a spinning top
  16. False
  17. microcontroller
  18. False
  19. True
  20. No
  21. False
  22. Yes
  23. No
  24. False
  25. microcontroller
  26. Yes
  27. False
  28. a digital thermometer
  29. microcontroller
  30. Yes
  31. a candle
  32. keeps the voltage steady
  33. False
  34. restarts the program
  35. USB or a 9 V battery
  36. True
  37. a bicycle bell
  38. the USB port
  39. True
  40. True

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