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Electronics Worksheet: What Is a Microcontroller

Electronics lesson 21: What is a microcontroller? · Set 542 · 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) the board breaks (c) it starts again (d) it stops forever
  2. 2.True or false: a microcontroller needs much more power. (a) True (b) False
  3. 3.Which of these usually has a microcontroller inside? (a) a bicycle bell (b) a digital thermometer (c) a spinning top (d) a wind-up toy
  4. 4.🤖 Does a plain wall switch usually have a microcontroller inside? (a) No (b) Yes
  5. 5.True or false: a microcontroller runs one small program. (a) True (b) False
  6. 6.🤖 Does a bicycle bell usually have a microcontroller inside? (a) No (b) Yes
  7. 7.🤖 Microcontroller or laptop: which one runs many apps at once? (a) microcontroller (b) laptop
  8. 8.True or false: a candle has no microcontroller inside. (a) True (b) False
  9. 9.🤖 Does a digital alarm clock usually have a microcontroller inside? (a) Yes (b) No
  10. 10.Which of these usually has a microcontroller inside? (a) a bicycle bell (b) a wind-up toy (c) a TV remote (d) a candle
  11. 11.Which job is done by the power LED? (a) runs the program (b) restarts the program (c) connect sensors and LEDs (d) shows the board is on
  12. 12.True or false: a hand pump usually has a microcontroller inside. (a) True (b) False
  13. 13.Which job is done by the USB port? (a) shows the board is on (b) runs the program (c) brings power and code (d) keeps the voltage steady
  14. 14.🧭 Which part of a microcontroller board restarts the program? (a) the USB port (b) the voltage regulator (c) the main chip (d) the reset button
  15. 15.True or false: a digital thermometer usually has a microcontroller inside. (a) True (b) False
  16. 16.Which of these usually has a microcontroller inside? (a) a digital alarm clock (b) a candle (c) a wind-up toy (d) a plain wall switch
  17. 17.Which job is done by the voltage regulator? (a) restarts the program (b) keeps the voltage steady (c) runs the program (d) brings power and code
  18. 18.True or false: a washing machine has no microcontroller inside. (a) True (b) False
  19. 19.🧭 Which part of a microcontroller board connect sensors and LEDs? (a) the USB port (b) the pins (c) the reset button (d) the main chip
  20. 20.Which of these usually has a microcontroller inside? (a) a washing machine (b) a spinning top (c) a wind-up toy (d) a candle
  21. 21.🤖 Does a toy robot usually have a microcontroller inside? (a) Yes (b) No
  22. 22.Which of these has no microcontroller inside? (a) a smart watch (b) a TV remote (c) a candle (d) a digital alarm clock
  23. 23.🤖 What is a microcontroller? (a) a kind of bulb (b) a big desktop computer (c) a computer on one chip (d) a type of battery
  24. 24.Which job is done by the main chip? (a) brings power and code (b) restarts the program (c) shows the board is on (d) runs the program
  25. 25.🤖 Does a spinning top usually have a microcontroller inside? (a) Yes (b) No
  26. 26.🧭 Which part of a microcontroller board shows the board is on? (a) the main chip (b) the power LED (c) the pins (d) the reset button
  27. 27.🤖 Does a candle usually have a microcontroller inside? (a) Yes (b) No
  28. 28.Which job is done by the pins? (a) runs the program (b) restarts the program (c) connect sensors and LEDs (d) shows the board is on
  29. 29.🤖 Microcontroller or laptop: which one uses very little power? (a) microcontroller (b) laptop
  30. 30.True or false: a candle usually has a microcontroller inside. (a) False (b) True
  31. 31.🧭 Which part of a microcontroller board brings power and code? (a) the main chip (b) the USB port (c) the reset button (d) the pins
  32. 32.🤖 Microcontroller or laptop: which one has no screen of its own? (a) microcontroller (b) laptop
  33. 33.True or false: a laptop has no screen of its own. (a) True (b) False
  34. 34.🤖 Does a hand pump usually have a microcontroller inside? (a) Yes (b) No
  35. 35.🤖 Does a TV remote usually have a microcontroller inside? (a) Yes (b) No
  36. 36.True or false: a washing machine usually has a microcontroller inside. (a) False (b) True
  37. 37.🤖 Does a smart watch usually have a microcontroller inside? (a) Yes (b) No
  38. 38.Which of these has no microcontroller inside? (a) a plain wall switch (b) a microwave oven (c) a TV remote (d) a washing machine
  39. 39.🤖 Does a microwave oven usually have a microcontroller inside? (a) Yes (b) No
  40. 40.🧭 Which part of a microcontroller board keeps the voltage steady? (a) the pins (b) the voltage regulator (c) the power LED (d) the USB port

Answer key

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

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